Changed DnD MIME file type for file DnD. Understood?

[wxWidgets.git] / src / gtk1 / window.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        window.cpp
// Purpose:
// Author:      Robert Roebling
// Created:     01/02/97
// Id:
// Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////


#ifdef __GNUG__
#pragma implementation "window.h"
#endif

#include "wx/defs.h"
#include "wx/window.h"
#include "wx/dc.h"
#include "wx/frame.h"
#include "wx/app.h"
#include "wx/layout.h"
#include "wx/utils.h"
#include "wx/dialog.h"
#include "wx/msgdlg.h"
#include "wx/dcclient.h"
#include "wx/dnd.h"
#include "wx/mdi.h"
#include "wx/menu.h"
#include "wx/notebook.h"
#include "wx/statusbr.h"
#include "wx/intl.h"
#include "wx/gtk/win_gtk.h"
#include "gdk/gdkprivate.h"
#include "gdk/gdkkeysyms.h"

#include <math.h>

//-----------------------------------------------------------------------------
// documentation on internals
//-----------------------------------------------------------------------------

/*
   I have been asked several times about writing some documentation about
   the GTK port of wxWindows, especially its internal structures. Obviously,
   you cannot understand wxGTK without knowing a little about the GTK, but
   some more information about what the wxWindow, which is the base class 
   for all other window classes, does seems required as well.
   
   What does wxWindow do? It contains the common interface for the following
   jobs of its descentants:
   
   1) Define the rudimentary behaviour common to all window classes, such as
   resizing, intercepting user input so as to make it possible to use these
   events for special purposes in a derived class, window names etc.

   2) Provide the possibility to contain and manage children, if the derived
   class is allowed to contain children, which holds true for those window
   classes, which do not display a native GTK widget. To name them, these
   classes are wxPanel, wxScrolledWindow, wxDialog, wxFrame. The MDI frame-
   work classes are a special case and are handled a bit differently from 
   the rest.
   
   3) Provide the possibility to draw into a client area of a window. This,
   too, only holds true for classes that do not display a native GTK widget
   as above.
   
   4) Provide the entire mechanism for scrolling widgets. This actaul inter-
   face for this is usually in wxScrolledWidget, but the GTK implementation
   is in this class.
   
   5) A multitude of helper or extra methods for special purposes, such as
   Drag'n'Drop, managing validators etc.
   
   Normally one might expect, that one wxWindows class would always contain
   one GTK widget. Under GTK, there is no such allround widget that has all
   the functionality. Moreover, the GTK defines a client area as a different
   widget from the actual widget you are handling. Last but not least some
   special classes (e.g. wxFrame) handle different categories of widgets and
   still have the possibility to draw something in the client area.
   It was therefore required to write a special purpose GTK widget, that would
   represent a client area in the sense of wxWindows capable to do the jobs
   2), 3) and 4). I have written this class and it resides in win_gtk.c of
   this directory.
   
   All windows must have a widget, with which they interact with other under-
   lying GTK widget. It is this widget, e.g. that has to be resized etc and
   thw wxWindow class has a member variable called m_widget which holds a
   pointer to this widget. When the window class displays a GTK native widget,
   this is the only GTK widget the class manages. When the class has a client
   area for drawing into and for containing children it must have at least
   one more GTK widget to handle (of the type GtkMyFixed, defined in win_gtk.c),
   but there can be any number of widgets, handled by a class (e.g. the frame
   class handles three). The common rule for all windows is only, that the
   widget that interacts with the rest of GTK must be referenced in m_widget
   and all other widgets must be children of this widget on the GTK level.
   The top-most widget, which also represents the client area, must be in
   the m_wxwindow field and must be of the type GtkMyFixed.
   
   As I said, the window classes that display a GTK native widget only have
   one widget, so in the case of e.g. the wxButton class m_widget holds a
   pointer to a GtkButton widget. But windows with client areas (for drawing
   and children) have a m_widget field that is a pointer to a GtkScrolled-
   Window and a m_wxwindow field that is pointer to a GtkMyFixed and this
   one is (in the GTK sense) a child of the GtkScrolledWindow.
   
   If the m_wxwindow field is set, then all input to this widget is inter-
   cepted and sent to the wxWindows class. If not, all input to the widget
   that gets pointed to by m_widget gets intercepted and sent to the class.

*/

//-----------------------------------------------------------------------------
// data
//-----------------------------------------------------------------------------

extern wxList wxPendingDelete;
extern wxList wxTopLevelWindows;
extern bool   g_blockEventsOnDrag;
wxWindow     *g_captureWindow = (wxWindow*)NULL;

//-----------------------------------------------------------------------------
// "expose_event" (of m_wxwindow, not of m_widget)
//-----------------------------------------------------------------------------

static void gtk_window_expose_callback( GtkWidget *WXUNUSED(widget), GdkEventExpose *gdk_event, wxWindow *win )
{ 
  if (!win->HasVMT()) return;
  if (g_blockEventsOnDrag) return;
  
  win->m_updateRegion.Union( gdk_event->area.x,
                             gdk_event->area.y,
    	                     gdk_event->area.width,
                             gdk_event->area.height );
           
  if (gdk_event->count > 0) return;

  wxPaintEvent event( win->GetId() );
  event.SetEventObject( win );
  win->GetEventHandler()->ProcessEvent( event );
  
  win->m_updateRegion.Clear();
}

//-----------------------------------------------------------------------------
// "draw" (of m_wxwindow, not of m_widget)
//-----------------------------------------------------------------------------

static void gtk_window_draw_callback( GtkWidget *WXUNUSED(widget), GdkRectangle *rect, wxWindow *win )
{ 
  if (!win->HasVMT()) return;
  if (g_blockEventsOnDrag) return;
  
  win->m_updateRegion.Union( rect->x, rect->y, rect->width, rect->height );
           
  wxPaintEvent event( win->GetId() );
  event.SetEventObject( win );
  win->GetEventHandler()->ProcessEvent( event );
  
  win->m_updateRegion.Clear();
}

//-----------------------------------------------------------------------------
// "key_press_event"
//-----------------------------------------------------------------------------

static gint gtk_window_key_press_callback( GtkWidget *widget, GdkEventKey *gdk_event, wxWindow *win )
{ 
  if (!win->HasVMT()) return FALSE;
  if (g_blockEventsOnDrag) return FALSE;

/*
  printf( "OnKeyPress from " );
  if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
    printf( win->GetClassInfo()->GetClassName() );
  printf( ".\n" );
*/

  long key_code = 0;
  switch (gdk_event->keyval)
  {
    case GDK_BackSpace:     key_code = WXK_BACK;        break;
    case GDK_Tab:           key_code = WXK_TAB;         break;
    case GDK_Linefeed:      key_code = WXK_RETURN;      break;
    case GDK_Clear:         key_code = WXK_CLEAR;       break;
    case GDK_Return:        key_code = WXK_RETURN;      break;
    case GDK_Pause:         key_code = WXK_PAUSE;       break;
    case GDK_Scroll_Lock:   key_code = WXK_SCROLL;      break;
    case GDK_Escape:        key_code = WXK_ESCAPE;      break;
    case GDK_Delete:        key_code = WXK_DELETE;      break;
    case GDK_Home:          key_code = WXK_HOME;        break;
    case GDK_Left:          key_code = WXK_LEFT;        break;
    case GDK_Up:            key_code = WXK_UP;          break;
    case GDK_Right:         key_code = WXK_RIGHT;       break;
    case GDK_Down:          key_code = WXK_DOWN;        break;
    case GDK_Prior:         key_code = WXK_PRIOR;       break;
//  case GDK_Page_Up:       key_code = WXK_PAGEUP;      break;
    case GDK_Next:          key_code = WXK_NEXT;        break;
//  case GDK_Page_Down:     key_code = WXK_PAGEDOWN;    break;
    case GDK_End:           key_code = WXK_END;         break;
    case GDK_Begin:         key_code = WXK_HOME;        break;
    case GDK_Select:        key_code = WXK_SELECT;      break;
    case GDK_Print:         key_code = WXK_PRINT;       break;
    case GDK_Execute:       key_code = WXK_EXECUTE;     break;
    case GDK_Insert:        key_code = WXK_INSERT;      break;
    case GDK_Num_Lock:      key_code = WXK_NUMLOCK;     break;
    case GDK_KP_Tab:        key_code = WXK_TAB;         break;
    case GDK_KP_Enter:      key_code = WXK_RETURN;      break;
    case GDK_KP_Home:       key_code = WXK_HOME;        break;
    case GDK_KP_Left:       key_code = WXK_LEFT;        break;
    case GDK_KP_Up:         key_code = WXK_UP;          break;
    case GDK_KP_Right:      key_code = WXK_RIGHT;       break;
    case GDK_KP_Down:       key_code = WXK_DOWN;        break;
    case GDK_KP_Prior:      key_code = WXK_PRIOR;       break;
//  case GDK_KP_Page_Up:    key_code = WXK_PAGEUP;      break;
    case GDK_KP_Next:       key_code = WXK_NEXT;        break;
//  case GDK_KP_Page_Down:  key_code = WXK_PAGEDOWN;    break;
    case GDK_KP_End:        key_code = WXK_END;         break;
    case GDK_KP_Begin:      key_code = WXK_HOME;        break;
    case GDK_KP_Insert:     key_code = WXK_INSERT;      break;
    case GDK_KP_Delete:     key_code = WXK_DELETE;      break;
    case GDK_KP_Multiply:   key_code = WXK_MULTIPLY;    break;
    case GDK_KP_Add:        key_code = WXK_ADD;         break;
    case GDK_KP_Separator:  key_code = WXK_SEPARATOR;   break;
    case GDK_KP_Subtract:   key_code = WXK_SUBTRACT;    break;
    case GDK_KP_Decimal:    key_code = WXK_DECIMAL;     break;
    case GDK_KP_Divide:     key_code = WXK_DIVIDE;      break;
    case GDK_KP_0:          key_code = WXK_NUMPAD0;     break;
    case GDK_KP_1:          key_code = WXK_NUMPAD1;     break;
    case GDK_KP_2:          key_code = WXK_NUMPAD2;     break;
    case GDK_KP_3:          key_code = WXK_NUMPAD3;     break;
    case GDK_KP_4:          key_code = WXK_NUMPAD4;     break;
    case GDK_KP_5:          key_code = WXK_NUMPAD5;     break;
    case GDK_KP_6:          key_code = WXK_NUMPAD6;     break;
    case GDK_KP_7:          key_code = WXK_NUMPAD7;     break;
    case GDK_KP_8:          key_code = WXK_NUMPAD7;     break;
    case GDK_KP_9:          key_code = WXK_NUMPAD9;     break;
    case GDK_F1:            key_code = WXK_F1;          break;
    case GDK_F2:            key_code = WXK_F2;          break;
    case GDK_F3:            key_code = WXK_F3;          break;
    case GDK_F4:            key_code = WXK_F4;          break;
    case GDK_F5:            key_code = WXK_F5;          break;
    case GDK_F6:            key_code = WXK_F6;          break;
    case GDK_F7:            key_code = WXK_F7;          break;
    case GDK_F8:            key_code = WXK_F8;          break;
    case GDK_F9:            key_code = WXK_F9;          break;
    case GDK_F10:           key_code = WXK_F10;         break;
    case GDK_F11:           key_code = WXK_F11;         break;
    case GDK_F12:           key_code = WXK_F12;         break;
    default:
    {
      if ((gdk_event->keyval >= 0x20) && (gdk_event->keyval <= 0xFF)) 
        key_code = gdk_event->keyval;
    }
  }

  if (!key_code) return FALSE;
  
  wxKeyEvent event( wxEVT_CHAR );
  event.m_shiftDown = (gdk_event->state & GDK_SHIFT_MASK);
  event.m_controlDown = (gdk_event->state & GDK_CONTROL_MASK);
  event.m_altDown = (gdk_event->state & GDK_MOD1_MASK);
  event.m_metaDown = (gdk_event->state & GDK_MOD2_MASK);
  event.m_keyCode = key_code;
  event.m_x = 0;
  event.m_y = 0;
  event.SetEventObject( win );
  
  bool ret = win->GetEventHandler()->ProcessEvent( event );
  
  if (!ret)
  {
    wxWindow *ancestor = win;
    while (ancestor)
    {    
      int command = ancestor->GetAcceleratorTable()->GetCommand( event );
      if (command != -1)
      {
        wxCommandEvent command_event( wxEVT_COMMAND_MENU_SELECTED, command );
        ret = ancestor->GetEventHandler()->ProcessEvent( command_event );
	break;
      }
      ancestor = ancestor->GetParent();
    }
  }
  
  if (ret)
  {
    if ((gdk_event->keyval >= 0x20) && (gdk_event->keyval <= 0xFF)) 
      gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "key_press_event" );
  }
  
  return ret;
}

//-----------------------------------------------------------------------------
// "button_press_event"
//-----------------------------------------------------------------------------

static gint gtk_window_button_press_callback( GtkWidget *widget, GdkEventButton *gdk_event, wxWindow *win )
{
  if (!win->IsOwnGtkWindow( gdk_event->window )) return TRUE;
  
  if ((g_captureWindow) && (win != g_captureWindow)) return TRUE;
  
  if (g_blockEventsOnDrag) return TRUE;

  if (win->m_wxwindow)
  {
    if (GTK_WIDGET_CAN_FOCUS(win->m_wxwindow) && !GTK_WIDGET_HAS_FOCUS (win->m_wxwindow) )
    {
      gtk_widget_grab_focus (win->m_wxwindow);
      
/*
      printf( "GrabFocus from " );
      if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
        printf( win->GetClassInfo()->GetClassName() );
      printf( ".\n" );
*/
      
    }
  }
    
  if (!win->HasVMT()) return TRUE;

/*
  printf( "OnButtonPress from " );
  if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
    printf( win->GetClassInfo()->GetClassName() );
  printf( ".\n" );
*/

  wxEventType event_type = wxEVT_LEFT_DOWN;
  
  if (gdk_event->button == 1)
  {
    switch (gdk_event->type)
    {
      case GDK_BUTTON_PRESS: event_type = wxEVT_LEFT_DOWN; break;
      case GDK_2BUTTON_PRESS: event_type = wxEVT_LEFT_DCLICK; break;
      default:  break;
    }
  }
  else if (gdk_event->button == 2)
  {
    switch (gdk_event->type)
    {
      case GDK_BUTTON_PRESS: event_type = wxEVT_MIDDLE_DOWN; break;
      case GDK_2BUTTON_PRESS: event_type = wxEVT_MIDDLE_DCLICK; break;
      default:  break;
    }
  }
  else if (gdk_event->button == 3)
  {
    switch (gdk_event->type)
    {
      case GDK_BUTTON_PRESS: event_type = wxEVT_RIGHT_DOWN; break;
      case GDK_2BUTTON_PRESS: event_type = wxEVT_RIGHT_DCLICK; break;
      default:  break;
    }
  }
  
  wxMouseEvent event( event_type );
  event.m_shiftDown = (gdk_event->state & GDK_SHIFT_MASK);
  event.m_controlDown = (gdk_event->state & GDK_CONTROL_MASK);
  event.m_altDown = (gdk_event->state & GDK_MOD1_MASK);
  event.m_metaDown = (gdk_event->state & GDK_MOD2_MASK);
  event.m_leftDown = (gdk_event->state & GDK_BUTTON1_MASK);
  event.m_middleDown = (gdk_event->state & GDK_BUTTON2_MASK);
  event.m_rightDown = (gdk_event->state & GDK_BUTTON3_MASK);
  
  event.m_x = (long)gdk_event->x;
  event.m_y = (long)gdk_event->y;
  
  // Some control don't have their own X window and thus cannot get
  // any events. 
  
  wxNode *node = win->GetChildren()->First();
  while (node)
  {
    wxWindow *child = (wxWindow*)node->Data();
    if ((child->m_x <= event.m_x) &&
        (child->m_y <= event.m_y) &&
	(child->m_x+child->m_width  >= event.m_x) &&
	(child->m_y+child->m_height >= event.m_y))
    {
      win = child;
      event.m_x -= child->m_x;
      event.m_y -= child->m_y;
      break;
    }
    node = node->Next();
  }
  
  event.SetEventObject( win );
  
  if (win->GetEventHandler()->ProcessEvent( event ))
    gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "button_press_event" );
  
  return TRUE;
}

//-----------------------------------------------------------------------------
// "button_release_event"
//-----------------------------------------------------------------------------

static gint gtk_window_button_release_callback( GtkWidget *widget, GdkEventButton *gdk_event, wxWindow *win )
{ 
  if (!win->IsOwnGtkWindow( gdk_event->window )) return TRUE;
  
  if ((g_captureWindow) && (win != g_captureWindow)) return TRUE;
  
  if (g_blockEventsOnDrag) return TRUE;

  if (!win->HasVMT()) return TRUE;
 
/*
  printf( "OnButtonRelease from " );
  if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
    printf( win->GetClassInfo()->GetClassName() );
  printf( ".\n" );
*/
  
  wxEventType event_type = wxEVT_NULL;
  
  switch (gdk_event->button)
  {
    case 1: event_type = wxEVT_LEFT_UP; break;
    case 2: event_type = wxEVT_MIDDLE_UP; break;
    case 3: event_type = wxEVT_RIGHT_UP; break;
  }

  wxMouseEvent event( event_type );
  event.m_shiftDown = (gdk_event->state & GDK_SHIFT_MASK);
  event.m_controlDown = (gdk_event->state & GDK_CONTROL_MASK);
  event.m_altDown = (gdk_event->state & GDK_MOD1_MASK);
  event.m_metaDown = (gdk_event->state & GDK_MOD2_MASK);
  event.m_leftDown = (gdk_event->state & GDK_BUTTON1_MASK);
  event.m_middleDown = (gdk_event->state & GDK_BUTTON2_MASK);
  event.m_rightDown = (gdk_event->state & GDK_BUTTON3_MASK);
  event.m_x = (long)gdk_event->x;
  event.m_y = (long)gdk_event->y;
  
  // Some control don't have their own X window and thus cannot get
  // any events. 
  
  wxNode *node = win->GetChildren()->First();
  while (node)
  {
    wxWindow *child = (wxWindow*)node->Data();
    if ((child->m_x <= event.m_x) &&
        (child->m_y <= event.m_y) &&
	(child->m_x+child->m_width  >= event.m_x) &&
	(child->m_y+child->m_height >= event.m_y))
    {
      win = child;
      event.m_x -= child->m_x;
      event.m_y -= child->m_y;
      break;
    }
    node = node->Next();
  }
  
  event.SetEventObject( win );
  
  if (win->GetEventHandler()->ProcessEvent( event ))
    gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "button_release_event" );
  
  return TRUE;
}

//-----------------------------------------------------------------------------
// "motion_notify_event"
//-----------------------------------------------------------------------------

static gint gtk_window_motion_notify_callback( GtkWidget *widget, GdkEventMotion *gdk_event, wxWindow *win )
{ 
  if (!win->IsOwnGtkWindow( gdk_event->window )) return TRUE;
  
  if ((g_captureWindow) && (win != g_captureWindow)) return TRUE;
  
  if (g_blockEventsOnDrag) return TRUE;

  if (!win->HasVMT()) return TRUE;
  
/*
  printf( "OnMotion from " );
  if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
    printf( win->GetClassInfo()->GetClassName() );
  printf( ".\n" );
*/
  
  wxMouseEvent event( wxEVT_MOTION );
  event.m_shiftDown = (gdk_event->state & GDK_SHIFT_MASK);
  event.m_controlDown = (gdk_event->state & GDK_CONTROL_MASK);
  event.m_altDown = (gdk_event->state & GDK_MOD1_MASK);
  event.m_metaDown = (gdk_event->state & GDK_MOD2_MASK);
  event.m_leftDown = (gdk_event->state & GDK_BUTTON1_MASK);
  event.m_middleDown = (gdk_event->state & GDK_BUTTON2_MASK);
  event.m_rightDown = (gdk_event->state & GDK_BUTTON3_MASK);
  
  event.m_x = (long)gdk_event->x;
  event.m_y = (long)gdk_event->y;
  
  // Some control don't have their own X window and thus cannot get
  // any events. 
  
  wxNode *node = win->GetChildren()->First();
  while (node)
  {
    wxWindow *child = (wxWindow*)node->Data();
    if ((child->m_x <= event.m_x) &&
        (child->m_y <= event.m_y) &&
	(child->m_x+child->m_width  >= event.m_x) &&
	(child->m_y+child->m_height >= event.m_y))
    {
      win = child;
      event.m_x -= child->m_x;
      event.m_y -= child->m_y;
      break;
    }
    node = node->Next();
  }
  
  event.SetEventObject( win );
  
  if (win->GetEventHandler()->ProcessEvent( event ))
    gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "motion_notify_event" );
  
  return TRUE;
}

//-----------------------------------------------------------------------------
// "focus_in_event"
//-----------------------------------------------------------------------------

static gint gtk_window_focus_in_callback( GtkWidget *widget, GdkEvent *WXUNUSED(event), wxWindow *win )
{
  if (g_blockEventsOnDrag) return TRUE;
  if (win->m_wxwindow)
  {
    if (GTK_WIDGET_CAN_FOCUS(win->m_wxwindow))
    {
      GTK_WIDGET_SET_FLAGS (win->m_wxwindow, GTK_HAS_FOCUS);
/*      
      printf( "SetFocus flag from " );
      if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
        printf( win->GetClassInfo()->GetClassName() );
      printf( ".\n" );
*/
    }
  }
  
  if (!win->HasVMT()) return TRUE;
  
/*
  printf( "OnSetFocus from " );
  if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
    printf( win->GetClassInfo()->GetClassName() );
  printf( "   " );
  printf( WXSTRINGCAST win->GetLabel() );
  printf( ".\n" );
*/
  
  wxFocusEvent event( wxEVT_SET_FOCUS, win->GetId() );
  event.SetEventObject( win );
  
  if (win->GetEventHandler()->ProcessEvent( event ))
    gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "focus_in_event" );
  
  return TRUE;
}

//-----------------------------------------------------------------------------
// "focus_out_event"
//-----------------------------------------------------------------------------

static gint gtk_window_focus_out_callback( GtkWidget *widget, GdkEvent *WXUNUSED(event), wxWindow *win )
{
  if (g_blockEventsOnDrag) return TRUE;
  if (win->m_wxwindow)
  {
    if (GTK_WIDGET_CAN_FOCUS(win->m_wxwindow))
      GTK_WIDGET_UNSET_FLAGS (win->m_wxwindow, GTK_HAS_FOCUS);
  }
  
  if (!win->HasVMT()) return TRUE;
  
/*
  printf( "OnKillFocus from " );
  if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
    printf( win->GetClassInfo()->GetClassName() );
  printf( ".\n" );
*/
  
  wxFocusEvent event( wxEVT_KILL_FOCUS, win->GetId() );
  event.SetEventObject( win );
  
  if (win->GetEventHandler()->ProcessEvent( event ))
    gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "focus_out_event" );

  return TRUE;
}

//-----------------------------------------------------------------------------
// "enter_notify_event"
//-----------------------------------------------------------------------------

static gint gtk_window_enter_callback( GtkWidget *widget, GdkEventCrossing *gdk_event, wxWindow *win )
{
  if (widget->window != gdk_event->window) return TRUE;
  
  if ((g_captureWindow) && (win != g_captureWindow)) return TRUE;
  
  if (g_blockEventsOnDrag) return TRUE;
  
  if (!win->HasVMT()) return TRUE;
  
  if (widget->window)
    gdk_window_set_cursor( widget->window, win->m_cursor->GetCursor() );
    
  wxMouseEvent event( wxEVT_ENTER_WINDOW );
  event.SetEventObject( win );
  
  if (win->GetEventHandler()->ProcessEvent( event ))
    gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "enter_notify_event" );
  
  return TRUE;
}
    
//-----------------------------------------------------------------------------
// "leave_notify_event"
//-----------------------------------------------------------------------------

static gint gtk_window_leave_callback( GtkWidget *widget, GdkEventCrossing *gdk_event, wxWindow *win )
{
  if (widget->window != gdk_event->window) return TRUE;
  
  if ((g_captureWindow) && (win != g_captureWindow)) return TRUE;
  
  if (g_blockEventsOnDrag) return TRUE;
  
  if (!win->HasVMT()) return TRUE;
  
  if (widget->window)
    gdk_window_set_cursor( widget->window, wxSTANDARD_CURSOR->GetCursor() );
    
  wxMouseEvent event( wxEVT_LEAVE_WINDOW );
  event.SetEventObject( win );
  
  if (win->GetEventHandler()->ProcessEvent( event ))
    gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "leave_notify_event" );
  
  return TRUE;
}
    
//-----------------------------------------------------------------------------
// "value_changed" from m_vAdjust
//-----------------------------------------------------------------------------

static void gtk_window_vscroll_callback( GtkWidget *WXUNUSED(widget), wxWindow *win )
{
  if (g_blockEventsOnDrag) return;

/*
  printf( "OnVScroll from " );
  if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
    printf( win->GetClassInfo()->GetClassName() );
  printf( ".\n" );
*/
  
  if (!win->HasVMT()) return;
  
  float diff = win->m_vAdjust->value - win->m_oldVerticalPos;
  if (fabs(diff) < 0.2) return;
  
  wxEventType command = wxEVT_NULL;
  
  float line_step = win->m_vAdjust->step_increment;
  float page_step = win->m_vAdjust->page_increment;
  
  if (fabs(diff-line_step) < 0.2) command = wxEVT_SCROLL_LINEDOWN;
  else if (fabs(diff+line_step) < 0.2) command = wxEVT_SCROLL_LINEUP;
  else if (fabs(diff-page_step) < 0.2) command = wxEVT_SCROLL_PAGEDOWN;
  else if (fabs(diff+page_step) < 0.2) command = wxEVT_SCROLL_PAGEUP;
  else command = wxEVT_SCROLL_THUMBTRACK;
      
  int value = (int)(win->m_vAdjust->value+0.5);

  wxScrollEvent event( command, win->GetId(), value, wxVERTICAL );
  event.SetEventObject( win );
  win->GetEventHandler()->ProcessEvent( event );
}

//-----------------------------------------------------------------------------
// "value_changed" from m_hAdjust
//-----------------------------------------------------------------------------

static void gtk_window_hscroll_callback( GtkWidget *WXUNUSED(widget), wxWindow *win )
{ 
  if (g_blockEventsOnDrag) return;
  
/*
  printf( "OnHScroll from " );
  if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
    printf( win->GetClassInfo()->GetClassName() );
  printf( ".\n" );
*/
  
  if (!win->HasVMT()) return;
    
  float diff = win->m_hAdjust->value - win->m_oldHorizontalPos;
  if (fabs(diff) < 0.2) return;
  
  wxEventType command = wxEVT_NULL;
  
  float line_step = win->m_hAdjust->step_increment;
  float page_step = win->m_hAdjust->page_increment;
  
  if (fabs(diff-line_step) < 0.2) command = wxEVT_SCROLL_LINEDOWN;
  else if (fabs(diff+line_step) < 0.2) command = wxEVT_SCROLL_LINEUP;
  else if (fabs(diff-page_step) < 0.2) command = wxEVT_SCROLL_PAGEDOWN;
  else if (fabs(diff+page_step) < 0.2) command = wxEVT_SCROLL_PAGEUP;
  else command = wxEVT_SCROLL_THUMBTRACK;

  int value = (int)(win->m_hAdjust->value+0.5);
      
  wxScrollEvent event( command, win->GetId(), value, wxHORIZONTAL );
  event.SetEventObject( win );
  win->GetEventHandler()->ProcessEvent( event );
}

//-----------------------------------------------------------------------------
// "changed" from m_vAdjust
//-----------------------------------------------------------------------------

static void gtk_window_vscroll_change_callback( GtkWidget *WXUNUSED(widget), wxWindow *win )
{
  if (g_blockEventsOnDrag) return;

/*
  printf( "OnVScroll change from " );
  if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
    printf( win->GetClassInfo()->GetClassName() );
  printf( ".\n" );
*/
  
  if (!win->HasVMT()) return;
  
  wxEventType command = wxEVT_SCROLL_THUMBTRACK;
  int value = (int)(win->m_vAdjust->value+0.5);

  wxScrollEvent event( command, win->GetId(), value, wxVERTICAL );
  event.SetEventObject( win );
  win->GetEventHandler()->ProcessEvent( event );
}

//-----------------------------------------------------------------------------
// "changed" from m_hAdjust
//-----------------------------------------------------------------------------

static void gtk_window_hscroll_change_callback( GtkWidget *WXUNUSED(widget), wxWindow *win )
{ 
  if (g_blockEventsOnDrag) return;
  
/*
  printf( "OnHScroll change from " );
  if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
    printf( win->GetClassInfo()->GetClassName() );
  printf( ".\n" );
*/
  
  if (!win->HasVMT()) return;
    
  wxEventType command = wxEVT_SCROLL_THUMBTRACK;
  int value = (int)(win->m_hAdjust->value+0.5);
      
  wxScrollEvent event( command, win->GetId(), value, wxHORIZONTAL );
  event.SetEventObject( win );
  win->GetEventHandler()->ProcessEvent( event );
}

//-----------------------------------------------------------------------------
// "drop_data_available_event"
//-----------------------------------------------------------------------------

static void gtk_window_drop_callback( GtkWidget *widget, GdkEvent *event, wxWindow *win )
{
  if (!win->HasVMT()) return;
  
  if (win->GetDropTarget())
  {
    int x = 0;
    int y = 0;
    gdk_window_get_pointer( widget->window, &x, &y, (GdkModifierType *) NULL );
    win->GetDropTarget()->Drop( event, x, y );
  }
  
/*
  g_free (event->dropdataavailable.data);
  g_free (event->dropdataavailable.data_type);
*/
}

//-----------------------------------------------------------------------------
// wxWindow
//-----------------------------------------------------------------------------

IMPLEMENT_DYNAMIC_CLASS(wxWindow,wxEvtHandler)

BEGIN_EVENT_TABLE(wxWindow, wxEvtHandler)
  EVT_SIZE(wxWindow::OnSize)
  EVT_SYS_COLOUR_CHANGED(wxWindow::OnSysColourChanged)
  EVT_INIT_DIALOG(wxWindow::OnInitDialog)
  EVT_IDLE(wxWindow::OnIdle)
END_EVENT_TABLE()

wxWindow::wxWindow()
{
  m_widget = (GtkWidget *) NULL;
  m_wxwindow = (GtkWidget *) NULL;
  m_parent = (wxWindow *) NULL;
  m_children.DeleteContents( FALSE );
  m_x = 0;
  m_y = 0;
  m_width = 0;
  m_height = 0;
  m_minWidth = -1;
  m_minHeight = -1;
  m_maxWidth = -1;
  m_maxHeight = -1;
  m_retCode = 0;
  m_eventHandler = this;
  m_windowValidator = (wxValidator *) NULL;
  m_windowId = -1;
  m_cursor = new wxCursor( wxCURSOR_ARROW );
  m_font = *wxSWISS_FONT;
  m_windowStyle = 0;
  m_windowName = "noname";
  m_constraints = (wxLayoutConstraints *) NULL;
  m_constraintsInvolvedIn = (wxList *) NULL;
  m_windowSizer = (wxSizer *) NULL;
  m_sizerParent = (wxWindow *) NULL;
  m_autoLayout = FALSE;
  m_sizeSet = FALSE;
  m_hasVMT = FALSE;
  m_needParent = TRUE;
  m_hasScrolling = FALSE;
  m_hAdjust = (GtkAdjustment *) NULL;
  m_vAdjust = (GtkAdjustment *) NULL;
  m_oldHorizontalPos = 0.0;
  m_oldVerticalPos = 0.0;
  m_isShown = FALSE;
  m_isEnabled = TRUE;
  m_pDropTarget = (wxDropTarget *) NULL;
  m_resizing = FALSE;
  m_hasOwnStyle = FALSE;
}

bool wxWindow::Create( wxWindow *parent, wxWindowID id,
      const wxPoint &pos, const wxSize &size,
      long style, const wxString &name  )
{
  m_isShown = FALSE;
  m_isEnabled = TRUE;
  m_needParent = TRUE;
  
  m_cursor = (wxCursor *) NULL;
  
  PreCreation( parent, id, pos, size, style, name );
  
  m_widget = gtk_scrolled_window_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
  m_hasScrolling = TRUE;
  
  GtkScrolledWindow *s_window;
  s_window = GTK_SCROLLED_WINDOW(m_widget);
  
  GtkScrolledWindowClass *scroll_class = GTK_SCROLLED_WINDOW_CLASS( GTK_OBJECT(m_widget)->klass );
  scroll_class->scrollbar_spacing = 0;
  
  gtk_scrolled_window_set_policy( s_window, GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
    
  m_oldHorizontalPos = 0.0;
  m_oldVerticalPos = 0.0;
 
  m_hAdjust = gtk_range_get_adjustment( GTK_RANGE(s_window->hscrollbar) );
  m_vAdjust = gtk_range_get_adjustment( GTK_RANGE(s_window->vscrollbar) );
  
  gtk_signal_connect (GTK_OBJECT (m_hAdjust), "value_changed",
          (GtkSignalFunc) gtk_window_hscroll_callback, (gpointer) this );
  gtk_signal_connect (GTK_OBJECT (m_vAdjust), "value_changed",
          (GtkSignalFunc) gtk_window_vscroll_callback, (gpointer) this );
          
  gtk_signal_connect (GTK_OBJECT (m_hAdjust), "changed",
          (GtkSignalFunc) gtk_window_hscroll_change_callback, (gpointer) this );
  gtk_signal_connect (GTK_OBJECT (m_vAdjust), "changed",
          (GtkSignalFunc) gtk_window_vscroll_change_callback, (gpointer) this );
  
  GtkViewport *viewport;
  viewport = GTK_VIEWPORT(s_window->viewport);
  
  if (m_windowStyle & wxRAISED_BORDER)
  {
    gtk_viewport_set_shadow_type( viewport, GTK_SHADOW_OUT );
  }
  else if (m_windowStyle & wxSUNKEN_BORDER)
  {
    gtk_viewport_set_shadow_type( viewport, GTK_SHADOW_IN );
  }
  else
  {
    gtk_viewport_set_shadow_type( viewport, GTK_SHADOW_NONE );
  }
    
  m_wxwindow = gtk_myfixed_new();
  
  if (m_wxwindow) GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
    
  if (m_windowStyle & wxTAB_TRAVERSAL == wxTAB_TRAVERSAL)
    GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
  else
    GTK_WIDGET_SET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );

  gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );

  // shut the viewport up
  gtk_viewport_set_hadjustment( viewport, (GtkAdjustment*) gtk_adjustment_new( 0.0, 0.0, 0.0, 0.0, 0.0, 0.0) );
  gtk_viewport_set_vadjustment( viewport, (GtkAdjustment*) gtk_adjustment_new( 0.0, 0.0, 0.0, 0.0, 0.0, 0.0) );
  
  // I _really_ don't want scrollbars in the beginning    
  m_vAdjust->lower = 0.0;
  m_vAdjust->upper = 1.0;
  m_vAdjust->value = 0.0;
  m_vAdjust->step_increment = 1.0;
  m_vAdjust->page_increment = 1.0;
  m_vAdjust->page_size = 5.0;
  gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "changed" );
  m_hAdjust->lower = 0.0;
  m_hAdjust->upper = 1.0;
  m_hAdjust->value = 0.0;
  m_hAdjust->step_increment = 1.0;
  m_hAdjust->page_increment = 1.0;
  m_hAdjust->page_size = 5.0;
  gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "changed" );
  
  gtk_widget_show( m_wxwindow );
  
  PostCreation();
  
  Show( TRUE );

  return TRUE;  
}

wxWindow::~wxWindow(void)
{
  m_hasVMT = FALSE;
  
  if (m_pDropTarget) delete m_pDropTarget;
  
  if (m_parent) m_parent->RemoveChild( this );
  if (m_widget) Show( FALSE );

  DestroyChildren();
  
  if (m_wxwindow) gtk_widget_destroy( m_wxwindow );
    
  if (m_widget) gtk_widget_destroy( m_widget );
  
  wxDELETE(m_cursor);

  DeleteRelatedConstraints();
  if (m_constraints)
  {
    // This removes any dangling pointers to this window
    // in other windows' constraintsInvolvedIn lists.
    UnsetConstraints(m_constraints);
    delete m_constraints;
    m_constraints = (wxLayoutConstraints *) NULL;
  }
  if (m_windowSizer)
  {
    delete m_windowSizer;
    m_windowSizer = (wxSizer *) NULL;
  }
  // If this is a child of a sizer, remove self from parent
  if (m_sizerParent) m_sizerParent->RemoveChild((wxWindow *)this);

  // Just in case the window has been Closed, but
  // we're then deleting immediately: don't leave
  // dangling pointers.
  wxPendingDelete.DeleteObject(this);

  // Just in case we've loaded a top-level window via
  // wxWindow::LoadNativeDialog but we weren't a dialog
  // class
  wxTopLevelWindows.DeleteObject(this);
    
  if (m_windowValidator) delete m_windowValidator;
}

void wxWindow::PreCreation( wxWindow *parent, wxWindowID id,
      const wxPoint &pos, const wxSize &size,
      long style, const wxString &name )
{
  if (m_needParent && (parent == NULL))
    wxFatalError( "Need complete parent.", name );

  m_widget = (GtkWidget *) NULL;
  m_hasVMT = FALSE;
  m_parent = parent;
  m_children.DeleteContents( FALSE );
  m_x = (int)pos.x;
  m_y = (int)pos.y;
  m_width = size.x;
  if (m_width == -1) m_width = 20;
  m_height = size.y;
  if (m_height == -1) m_height = 20;
  m_minWidth = -1;
  m_minHeight = -1;
  m_maxWidth = -1;
  m_maxHeight = -1;
  m_retCode = 0;
  m_eventHandler = this;
  m_windowId = id;
  m_sizeSet = FALSE;
  if (m_cursor == NULL)
    m_cursor = new wxCursor( wxCURSOR_ARROW );
  m_font = *wxSWISS_FONT;
  m_backgroundColour = wxWHITE;
  m_foregroundColour = wxBLACK;
  m_windowStyle = style;
  m_windowName = name;
  m_constraints = (wxLayoutConstraints *) NULL;
  m_constraintsInvolvedIn = (wxList *) NULL;
  m_windowSizer = (wxSizer *) NULL;
  m_sizerParent = (wxWindow *) NULL;
  m_autoLayout = FALSE;
  m_pDropTarget = (wxDropTarget *) NULL;
  m_resizing = FALSE;
  m_windowValidator = (wxValidator *) NULL;
  m_hasOwnStyle = FALSE;
}

void wxWindow::PostCreation(void)
{
  if (m_parent) m_parent->AddChild( this );
  
  if (m_wxwindow)
  {
    gtk_signal_connect( GTK_OBJECT(m_wxwindow), "expose_event", 
      GTK_SIGNAL_FUNC(gtk_window_expose_callback), (gpointer)this );
      
    gtk_signal_connect( GTK_OBJECT(m_wxwindow), "draw", 
      GTK_SIGNAL_FUNC(gtk_window_draw_callback), (gpointer)this );
  }
  
  ConnectWidget( GetConnectWidget() );
  
  if (m_widget && m_parent) gtk_widget_realize( m_widget );
  
  if (m_wxwindow)
  {
    gtk_widget_realize( m_wxwindow );
    gdk_gc_set_exposures( m_wxwindow->style->fg_gc[0], TRUE );
  }
  
  SetCursor( wxSTANDARD_CURSOR );
  
  m_hasVMT = TRUE;
}

void wxWindow::ConnectWidget( GtkWidget *widget )
{
  gtk_signal_connect( GTK_OBJECT(widget), "key_press_event",
    GTK_SIGNAL_FUNC(gtk_window_key_press_callback), (gpointer)this );

  gtk_signal_connect( GTK_OBJECT(widget), "button_press_event",
    GTK_SIGNAL_FUNC(gtk_window_button_press_callback), (gpointer)this );
    
  gtk_signal_connect( GTK_OBJECT(widget), "button_release_event",
    GTK_SIGNAL_FUNC(gtk_window_button_release_callback), (gpointer)this );
    
  gtk_signal_connect( GTK_OBJECT(widget), "motion_notify_event",
    GTK_SIGNAL_FUNC(gtk_window_motion_notify_callback), (gpointer)this );
    
  gtk_signal_connect( GTK_OBJECT(widget), "focus_in_event", 
    GTK_SIGNAL_FUNC(gtk_window_focus_in_callback), (gpointer)this );

  gtk_signal_connect( GTK_OBJECT(widget), "focus_out_event", 
    GTK_SIGNAL_FUNC(gtk_window_focus_out_callback), (gpointer)this );

  gtk_signal_connect( GTK_OBJECT(widget), "enter_notify_event", 
    GTK_SIGNAL_FUNC(gtk_window_enter_callback), (gpointer)this );
    
  gtk_signal_connect( GTK_OBJECT(widget), "leave_notify_event", 
    GTK_SIGNAL_FUNC(gtk_window_leave_callback), (gpointer)this );
}

bool wxWindow::HasVMT(void)
{
  return m_hasVMT;
}

bool wxWindow::Close( bool force )
{
  wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
  event.SetEventObject(this);
  event.SetForce(force);

  return GetEventHandler()->ProcessEvent(event);
}

bool wxWindow::Destroy(void)
{
  m_hasVMT = FALSE;
  delete this;
  return TRUE;
}

bool wxWindow::DestroyChildren(void)
{
  if (GetChildren()) 
  {
    wxNode *node;
    while ((node = GetChildren()->First()) != (wxNode *)NULL) 
    {
      wxWindow *child;
      if ((child = (wxWindow *)node->Data()) != (wxWindow *)NULL) 
      {
        delete child;
        if (GetChildren()->Member(child)) delete node;
      }
    }
  }
  return TRUE;
}

void wxWindow::PrepareDC( wxDC &WXUNUSED(dc) )
{
  // are we to set fonts here ?
}

void wxWindow::ImplementSetSize(void)
{ 
  if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
  if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
  if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_minWidth;
  if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_minHeight;
  gtk_widget_set_usize( m_widget, m_width, m_height );
}

void wxWindow::ImplementSetPosition(void)
{
  if (IS_KIND_OF(this,wxFrame) || IS_KIND_OF(this,wxDialog))
  {
    if ((m_x != -1) || (m_y != -1))
      gtk_widget_set_uposition( m_widget, m_x, m_y );
    return;
  }
  
  if (!m_parent)
  {
    wxFAIL_MSG( "wxWindow::SetSize error.\n" );
    return;
  }
  
  if ((m_parent) && (m_parent->m_wxwindow))
    gtk_myfixed_move( GTK_MYFIXED(m_parent->m_wxwindow), m_widget, m_x, m_y );
    
  // Don't do anything for children of wxNotebook and wxMDIChildFrame   
}

void wxWindow::SetSize( int x, int y, int width, int height, int sizeFlags )
{
  if (m_resizing) return; // I don't like recursions
  m_resizing = TRUE;
  
  int newX = x;
  int newY = y;
  int newW = width;
  int newH = height;
  
  if ((sizeFlags & wxSIZE_USE_EXISTING) == wxSIZE_USE_EXISTING)
  {
    if (newX == -1) newX = m_x;
    if (newY == -1) newY = m_y;
    if (newW == -1) newW = m_width;
    if (newH == -1) newH = m_height;
  }
  
  if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
  {
    if (newW == -1) newW = 80;
  }
  
  if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
  {
    if (newH == -1) newH = 26;
  }
  
  if ((m_x != newX) || (m_y != newY) || (!m_sizeSet))
  {
    m_x = newX;
    m_y = newY;
    ImplementSetPosition();
  }
  if ((m_width != newW) || (m_height != newH) || (!m_sizeSet))
  {
    m_width = newW;
    m_height = newH;
    ImplementSetSize();
  }
  m_sizeSet = TRUE;
  
  wxSizeEvent event( wxSize(m_width,m_height), GetId() );
  event.SetEventObject( this );
  ProcessEvent( event );
  
  m_resizing = FALSE;
}

void wxWindow::SetSize( int width, int height )
{
  SetSize( -1, -1, width, height, wxSIZE_USE_EXISTING );
}

void wxWindow::Move( int x, int y )
{
  SetSize( x, y, -1, -1, wxSIZE_USE_EXISTING );
}

void wxWindow::GetSize( int *width, int *height ) const
{
  if (width) (*width) = m_width;
  if (height) (*height) = m_height;
}

void wxWindow::SetClientSize( int width, int height )
{
  if (!m_wxwindow)
  {
    SetSize( width, height );
  }
  else
  {
    int dw = 0;
    int dh = 0;
    
    if (!m_hasScrolling)
    {
/*
      do we have sunken dialogs ?
      
      GtkStyleClass *window_class = m_wxwindow->style->klass;
    
      dw += 2 * window_class->xthickness;
      dh += 2 * window_class->ythickness;
*/
    }
    else
    {
      GtkScrolledWindow *scroll_window = GTK_SCROLLED_WINDOW(m_widget);
      GtkScrolledWindowClass *scroll_class = GTK_SCROLLED_WINDOW_CLASS( GTK_OBJECT(m_widget)->klass );
    
      GtkWidget *viewport = scroll_window->viewport;
      GtkStyleClass *viewport_class = viewport->style->klass;
    
      GtkWidget *hscrollbar = scroll_window->hscrollbar;
      GtkWidget *vscrollbar = scroll_window->vscrollbar;
    
      if ((m_windowStyle & wxRAISED_BORDER) ||
          (m_windowStyle & wxSUNKEN_BORDER))
      {
        dw += 2 * viewport_class->xthickness;
        dh += 2 * viewport_class->ythickness;
      }
    
      if (GTK_WIDGET_VISIBLE(vscrollbar))
      {
        dw += vscrollbar->allocation.width;
        dw += scroll_class->scrollbar_spacing;
      }
    
      if (GTK_WIDGET_VISIBLE(hscrollbar))
      {
        dh += hscrollbar->allocation.height;
        dw += scroll_class->scrollbar_spacing;
      }
    }
    
    SetSize( width+dw, height+dh );
  }
}

void wxWindow::GetClientSize( int *width, int *height ) const
{
  if (!m_wxwindow)
  {
    if (width) (*width) = m_width;
    if (height) (*height) = m_height;
  }
  else
  {
    int dw = 0;
    int dh = 0;
    
    if (!m_hasScrolling)
    {
/*
      do we have sunken dialogs ?
      
      GtkStyleClass *window_class = m_wxwindow->style->klass;
    
      dw += 2 * window_class->xthickness;
      dh += 2 * window_class->ythickness;
*/
    }
    else
    {
      GtkScrolledWindow *scroll_window = GTK_SCROLLED_WINDOW(m_widget);
      GtkScrolledWindowClass *scroll_class = GTK_SCROLLED_WINDOW_CLASS( GTK_OBJECT(m_widget)->klass );
    
      GtkWidget *viewport = scroll_window->viewport;
      GtkStyleClass *viewport_class = viewport->style->klass;
    
      GtkWidget *hscrollbar = scroll_window->hscrollbar;
      GtkWidget *vscrollbar = scroll_window->vscrollbar;
    
      if ((m_windowStyle & wxRAISED_BORDER) ||
          (m_windowStyle & wxSUNKEN_BORDER))
      {
        dw += 2 * viewport_class->xthickness;
        dh += 2 * viewport_class->ythickness;
      }
    
      if (GTK_WIDGET_VISIBLE(vscrollbar))
      {
//        dw += vscrollbar->allocation.width;
        dw += 15;                               // range.slider_width = 11 + 2*2pts edge
        dw += scroll_class->scrollbar_spacing;
      }
    
      if (GTK_WIDGET_VISIBLE(hscrollbar))
      {
//        dh += hscrollbar->allocation.height;
        dh += 15;
        dh += scroll_class->scrollbar_spacing;
      }
    }
    
    if (width) (*width) = m_width - dw;
    if (height) (*height) = m_height - dh;
  }
}

void wxWindow::GetPosition( int *x, int *y ) const
{
  if (x) (*x) = m_x;
  if (y) (*y) = m_y;
}

void wxWindow::ClientToScreen( int *x, int *y )
{
  GdkWindow *source = (GdkWindow *) NULL;
  if (m_wxwindow)
    source = m_wxwindow->window;
  else
    source = m_widget->window;
    
  int org_x = 0;
  int org_y = 0;
  gdk_window_get_origin( source, &org_x, &org_y );

  if (!m_wxwindow)
  {  
    if (GTK_WIDGET_NO_WINDOW (m_widget))
    {
      org_x += m_widget->allocation.x;
      org_y += m_widget->allocation.y;
    }
  }
  
  if (x) *x += org_x;  
  if (y) *y += org_y;  
}

void wxWindow::ScreenToClient( int *x, int *y )
{
  GdkWindow *source = (GdkWindow *) NULL;
  if (m_wxwindow)
    source = m_wxwindow->window;
  else
    source = m_widget->window;
    
  int org_x = 0;
  int org_y = 0;
  gdk_window_get_origin( source, &org_x, &org_y );

  if (!m_wxwindow)
  {  
    if (GTK_WIDGET_NO_WINDOW (m_widget))
    {
      org_x += m_widget->allocation.x;
      org_y += m_widget->allocation.y;
    }
  }
  
  if (x) *x -= org_x;  
  if (y) *y -= org_y;  
}

void wxWindow::Centre( int direction )
{
  if (IS_KIND_OF(this,wxDialog) || IS_KIND_OF(this,wxFrame))
  {
    if (direction & wxHORIZONTAL == wxHORIZONTAL) m_x = (gdk_screen_width () - m_width) / 2;
    if (direction & wxVERTICAL == wxVERTICAL) m_y = (gdk_screen_height () - m_height) / 2;
    ImplementSetPosition();
  }
  else
  {
    if (m_parent)
    {
      int p_w = 0;
      int p_h = 0;
      m_parent->GetSize( &p_w, &p_h );
      if (direction & wxHORIZONTAL == wxHORIZONTAL) m_x = (p_w - m_width) / 2;
      if (direction & wxVERTICAL == wxVERTICAL) m_y = (p_h - m_height) / 2;
      ImplementSetPosition();
    }
  }
}

void wxWindow::Fit(void)
{
  int maxX = 0;
  int maxY = 0;
  wxNode *node = GetChildren()->First();
  while ( node )
  {
    wxWindow *win = (wxWindow *)node->Data();
    int wx, wy, ww, wh;
    win->GetPosition(&wx, &wy);
    win->GetSize(&ww, &wh);
    if ( wx + ww > maxX )
      maxX = wx + ww;
    if ( wy + wh > maxY )
      maxY = wy + wh;

    node = node->Next();
  }
  SetClientSize(maxX + 5, maxY + 10);
}

void wxWindow::SetSizeHints( int minW, int minH, int maxW, int maxH, int WXUNUSED(incW), int WXUNUSED(incH) )
{
  m_minWidth = minW;
  m_minHeight = minH;
  m_maxWidth = maxW;
  m_maxHeight = maxH;
}

void wxWindow::OnSize( wxSizeEvent &WXUNUSED(event) )
{
  //if (GetAutoLayout()) Layout();
}

bool wxWindow::Show( bool show )
{
  if (show)
    gtk_widget_show( m_widget );
  else
    gtk_widget_hide( m_widget );
  m_isShown = show;  
  return TRUE;
}

void wxWindow::Enable( bool enable )
{
  m_isEnabled = enable;
  gtk_widget_set_sensitive( m_widget, enable );
  if (m_wxwindow) gtk_widget_set_sensitive( m_wxwindow, enable );
}

int wxWindow::GetCharHeight(void) const
{
  GdkFont *font = m_font.GetInternalFont( 1.0 );
  return font->ascent + font->descent;
}

int wxWindow::GetCharWidth(void) const
{
  GdkFont *font = m_font.GetInternalFont( 1.0 );
  return gdk_string_width( font, "H" );
}

void wxWindow::GetTextExtent( const wxString& string, int *x, int *y,
  int *descent, int *externalLeading, const wxFont *theFont, bool WXUNUSED(use16) ) const
{
  wxFont fontToUse = m_font;
  if (theFont) fontToUse = *theFont;
  
  GdkFont *font = fontToUse.GetInternalFont( 1.0 );
  if (x) (*x) = gdk_string_width( font, string );
  if (y) (*y) = font->ascent + font->descent;
  if (descent) (*descent) = font->descent;
  if (externalLeading) (*externalLeading) = 0;  // ??
}

void wxWindow::MakeModal( bool modal )
{
  return;
  // Disable all other windows
  if (this->IsKindOf(CLASSINFO(wxDialog)) || this->IsKindOf(CLASSINFO(wxFrame)))
  {
    wxNode *node = wxTopLevelWindows.First();
    while (node)
    {
      wxWindow *win = (wxWindow *)node->Data();
      if (win != this)
        win->Enable(!modal);

      node = node->Next();
    }
  }
}

void wxWindow::SetFocus(void)
{
  GtkWidget *connect_widget = GetConnectWidget();
  if (connect_widget)
  {
    if (GTK_WIDGET_CAN_FOCUS(connect_widget) && !GTK_WIDGET_HAS_FOCUS (connect_widget) )
    {
      gtk_widget_grab_focus (connect_widget);
    }
  }
}

bool wxWindow::OnClose(void)
{
  return TRUE;
}

void wxWindow::AddChild( wxWindow *child )
{
  // Addchild is (often) called before the program
  // has left the parents constructor so that no
  // virtual tables work yet. The approach below
  // practically imitates virtual tables, i.e. it
  // implements a different AddChild() behaviour
  // for wxFrame, wxDialog, wxWindow and 
  // wxMDIParentFrame.

  // wxFrame and wxDialog as children aren't placed into the parents
  
  if (( IS_KIND_OF(child,wxFrame) || IS_KIND_OF(child,wxDialog) ) &&
      (!IS_KIND_OF(child,wxMDIChildFrame)))
  {
    m_children.Append( child );
    
    if ((child->m_x != -1) && (child->m_y != -1))
      gtk_widget_set_uposition( child->m_widget, child->m_x, child->m_y );
      
    return;
  }
  
  // In the case of an wxMDIChildFrame descendant, we use the 
  // client windows's AddChild()
  
  if (IS_KIND_OF(this,wxMDIParentFrame))
  {
    if (IS_KIND_OF(child,wxMDIChildFrame))
    {
      wxMDIClientWindow *client = ((wxMDIParentFrame*)this)->GetClientWindow();
      if (client)
      { 
        client->AddChild( child );
        return;
      }
    }
  }
  
  // wxNotebook is very special, so it has a private AddChild()
  
  if (IS_KIND_OF(this,wxNotebook))
  {
    wxNotebook *tab = (wxNotebook*)this;
    tab->AddChild( child );
    return;
  }
  
  // wxFrame has a private AddChild
  
  if (IS_KIND_OF(this,wxFrame) && !IS_KIND_OF(this,wxMDIChildFrame))
  {
    wxFrame *frame = (wxFrame*)this;
    frame->AddChild( child );
    return;
  }
  
  // All the rest
  
  m_children.Append( child );
  if (m_wxwindow) gtk_myfixed_put( GTK_MYFIXED(m_wxwindow), child->m_widget, 
    child->m_x, child->m_y );
  
  gtk_widget_set_usize( child->m_widget, child->m_width, child->m_height );
}

wxList *wxWindow::GetChildren(void)
{
  return (&m_children);
}

void wxWindow::RemoveChild( wxWindow *child )
{
  if (GetChildren())
 GetChildren()->DeleteObject( child );
  child->m_parent = (wxWindow *) NULL;
}

void wxWindow::SetReturnCode( int retCode )
{
  m_retCode = retCode;
}

int wxWindow::GetReturnCode(void)
{
  return m_retCode;
}

void wxWindow::Raise(void)
{
  if (m_widget) gdk_window_raise( m_widget->window );
}

void wxWindow::Lower(void)
{
  if (m_widget) gdk_window_lower( m_widget->window );
}

wxEvtHandler *wxWindow::GetEventHandler(void)
{
  return m_eventHandler;
}

void wxWindow::SetEventHandler( wxEvtHandler *handler )
{
  m_eventHandler = handler;
}

void wxWindow::PushEventHandler(wxEvtHandler *handler)
{
	handler->SetNextHandler(GetEventHandler());
	SetEventHandler(handler);
}

wxEvtHandler *wxWindow::PopEventHandler(bool deleteHandler)
{
	if ( GetEventHandler() )
	{
		wxEvtHandler *handlerA = GetEventHandler();
		wxEvtHandler *handlerB = handlerA->GetNextHandler();
		handlerA->SetNextHandler((wxEvtHandler *) NULL);
		SetEventHandler(handlerB);
		if ( deleteHandler )
		{
			delete handlerA;
			return (wxEvtHandler *) NULL;
		}
		else
			return handlerA;
	}
	else
		return (wxEvtHandler *) NULL;
}

wxValidator *wxWindow::GetValidator(void)
{
  return m_windowValidator;
}

void wxWindow::SetValidator( const wxValidator& validator )
{
  if (m_windowValidator) delete m_windowValidator;
  m_windowValidator = validator.Clone();
  if (m_windowValidator) m_windowValidator->SetWindow(this);
}

bool wxWindow::IsBeingDeleted(void)
{
  return FALSE;
}

void wxWindow::SetId( wxWindowID id )
{
  m_windowId = id;
}

wxWindowID wxWindow::GetId(void)
{
  return m_windowId;
}

void wxWindow::SetCursor( const wxCursor &cursor )
{
  wxASSERT(m_cursor != NULL);

  if (m_cursor != NULL)
    if (*m_cursor == cursor)
      return;
  (*m_cursor) = cursor;
  if (m_widget->window)
    gdk_window_set_cursor( m_widget->window, m_cursor->GetCursor() );
  if (m_wxwindow && m_wxwindow->window)
    gdk_window_set_cursor( m_wxwindow->window, m_cursor->GetCursor() );
}

void wxWindow::Refresh( bool eraseBackground, const wxRect *rect )
{
  if (eraseBackground && m_wxwindow && m_wxwindow->window)
  {
    if (rect)
      gdk_window_clear_area( m_wxwindow->window, 
        rect->x, 
        rect->y, 
        rect->width, 
        rect->height );
    else
      Clear(); 
  }
  if (!rect)
  {
    if (m_wxwindow)
    {
      int w = 0;
      int h = 0;
      GetClientSize( &w, &h );
      
      GdkRectangle gdk_rect;
      gdk_rect.x = 0;
      gdk_rect.y = 0;
      gdk_rect.width = w;
      gdk_rect.height = h;
      gtk_widget_draw( m_wxwindow, &gdk_rect );
    }
  }
  else
  {
    GdkRectangle gdk_rect;
    gdk_rect.x = rect->x;
    gdk_rect.y = rect->y;
    gdk_rect.width = rect->width;
    gdk_rect.height = rect->height;
    
    if (m_wxwindow)
      gtk_widget_draw( m_wxwindow, &gdk_rect );
    else
      gtk_widget_draw( m_widget, &gdk_rect );
  }
}

wxRegion wxWindow::GetUpdateRegion() const
{
  return m_updateRegion;
}

bool wxWindow::IsExposed( int x, int y) const
{
  return (m_updateRegion.Contains( x, y ) != wxOutRegion );
}

bool wxWindow::IsExposed( int x, int y, int w, int h ) const
{
  return (m_updateRegion.Contains( x, y, w, h ) != wxOutRegion );
}

bool wxWindow::IsExposed( const wxPoint& pt ) const
{
  return (m_updateRegion.Contains( pt.x, pt.y ) != wxOutRegion );
}

bool wxWindow::IsExposed( const wxRect& rect ) const
{
  return (m_updateRegion.Contains( rect.x, rect.y, rect.width, rect.height ) != wxOutRegion );
}

void wxWindow::Clear(void)
{
  if (m_wxwindow && m_wxwindow->window) gdk_window_clear( m_wxwindow->window );
}

wxColour wxWindow::GetBackgroundColour(void) const
{
  return m_backgroundColour;
}

void wxWindow::SetBackgroundColour( const wxColour &colour )
{
  m_backgroundColour = colour;
  if (m_wxwindow)
  {
    m_backgroundColour.CalcPixel( m_wxwindow->style->colormap );
    gdk_window_set_background( m_wxwindow->window, m_backgroundColour.GetColor() );
    gdk_window_clear( m_wxwindow->window );
  }
  // do something ?
}

wxColour wxWindow::GetForegroundColour(void) const
{
  return m_foregroundColour;
}

void wxWindow::SetForegroundColour( const wxColour &colour )
{
  m_foregroundColour = colour;
}

bool wxWindow::Validate(void)
{
  wxNode *node = GetChildren()->First();
  while (node)
  {
    wxWindow *child = (wxWindow *)node->Data();
    if (child->GetValidator() && /* child->GetValidator()->Ok() && */ !child->GetValidator()->Validate(this)) 
      { return FALSE; }
    node = node->Next();
  }
  return TRUE;
}

bool wxWindow::TransferDataToWindow(void)
{
  wxNode *node = GetChildren()->First();
  while (node)
  {
    wxWindow *child = (wxWindow *)node->Data();
    if (child->GetValidator() && /* child->GetValidator()->Ok() && */
  !child->GetValidator()->TransferToWindow() )
    {
      wxMessageBox( _("Application Error"), _("Could not transfer data to window"), wxOK|wxICON_EXCLAMATION );
      return FALSE;
    }
    node = node->Next();
  }
  return TRUE;
}

bool wxWindow::TransferDataFromWindow(void)
{
  wxNode *node = GetChildren()->First();
  while (node)
  {
    wxWindow *child = (wxWindow *)node->Data();
    if ( child->GetValidator() && /* child->GetValidator()->Ok() && */ !child->GetValidator()->TransferFromWindow() )
      { return FALSE; }
   node = node->Next();
  }
  return TRUE;
}

void wxWindow::SetAcceleratorTable( const wxAcceleratorTable& accel )
{
  m_acceleratorTable = accel;
}

void wxWindow::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
{
  TransferDataToWindow();
}

void wxWindow::InitDialog(void)
{
  wxInitDialogEvent event(GetId());
  event.SetEventObject( this );
  GetEventHandler()->ProcessEvent(event);
}

static void SetInvokingWindow( wxMenu *menu, wxWindow *win )
{
  menu->SetInvokingWindow( win );
  wxNode *node = menu->m_items.First();
  while (node)
  {
    wxMenuItem *menuitem = (wxMenuItem*)node->Data();
    if (menuitem->IsSubMenu())
      SetInvokingWindow( menuitem->GetSubMenu(), win );
    node = node->Next();
  }
}

bool wxWindow::PopupMenu( wxMenu *menu, int WXUNUSED(x), int WXUNUSED(y) )
{
  SetInvokingWindow( menu, this );
  gtk_menu_popup( GTK_MENU(menu->m_menu), (GtkWidget *) NULL, (GtkWidget *) NULL, (GtkMenuPositionFunc) NULL, NULL, 0, 0 );
  return TRUE;
}

void wxWindow::SetDropTarget( wxDropTarget *dropTarget )
{
  GtkWidget *dnd_widget = GetConnectWidget();
  
  DisconnectDnDWidget( dnd_widget );
  
  if (m_pDropTarget) delete m_pDropTarget;
  m_pDropTarget = dropTarget;
  
  ConnectDnDWidget( dnd_widget );
}

wxDropTarget *wxWindow::GetDropTarget() const
{
  return m_pDropTarget;
}

void wxWindow::ConnectDnDWidget( GtkWidget *widget )
{
  if (!m_pDropTarget) return;
  
  m_pDropTarget->RegisterWidget( widget );
    
  gtk_signal_connect( GTK_OBJECT(widget), "drop_data_available_event",
    GTK_SIGNAL_FUNC(gtk_window_drop_callback), (gpointer)this );
}

void wxWindow::DisconnectDnDWidget( GtkWidget *widget )
{
  if (!m_pDropTarget) return;
  
  gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
    GTK_SIGNAL_FUNC(gtk_window_drop_callback), (gpointer)this );
  
  m_pDropTarget->UnregisterWidget( widget );
}

GtkWidget* wxWindow::GetConnectWidget(void)
{
  GtkWidget *connect_widget = m_widget;
  if (m_wxwindow) connect_widget = m_wxwindow;
  
  return connect_widget;
}
  
bool wxWindow::IsOwnGtkWindow( GdkWindow *window )
{
  if (m_wxwindow) return (window == m_wxwindow->window);
  return (window == m_widget->window);
}

void wxWindow::SetFont( const wxFont &font )
{
  if (((wxFont*)&font)->Ok())
    m_font = font;
  else
    m_font = *wxSWISS_FONT;

  GtkStyle *style = (GtkStyle*) NULL;
  if (!m_hasOwnStyle)
  {
    m_hasOwnStyle = TRUE;
    style = gtk_style_copy( gtk_widget_get_style( m_widget ) );
  }
  else
  {
    style = gtk_widget_get_style( m_widget );
  }
  
  gdk_font_unref( style->font );
  style->font = gdk_font_ref( m_font.GetInternalFont( 1.0 ) );
  
  gtk_widget_set_style( m_widget, style );
}

wxFont *wxWindow::GetFont(void)
{
  return &m_font;
}

void wxWindow::SetWindowStyleFlag( long flag )
{
  m_windowStyle = flag;
}

long wxWindow::GetWindowStyleFlag(void) const
{
  return m_windowStyle;
}

void wxWindow::CaptureMouse(void)
{
  GtkWidget *connect_widget = GetConnectWidget();
  gtk_grab_add( connect_widget );
  gdk_pointer_grab ( connect_widget->window, FALSE,
                    (GdkEventMask)
        (GDK_BUTTON_PRESS_MASK | 
        GDK_BUTTON_RELEASE_MASK |
        GDK_POINTER_MOTION_MASK), 
        (GdkWindow *) NULL, (GdkCursor *) NULL, GDK_CURRENT_TIME );
  g_captureWindow = this;
}

void wxWindow::ReleaseMouse(void)
{
  GtkWidget *connect_widget = GetConnectWidget();
  gtk_grab_remove( connect_widget );
  gdk_pointer_ungrab ( GDK_CURRENT_TIME );
  g_captureWindow = (wxWindow*) NULL;;
}

void wxWindow::SetTitle( const wxString &WXUNUSED(title) )
{
}

wxString wxWindow::GetTitle(void) const
{
  return (wxString&)m_windowName;
}

wxString wxWindow::GetLabel(void) const
{
  return GetTitle();
}

void wxWindow::SetName( const wxString &name )
{
  m_windowName = name;
}

wxString wxWindow::GetName(void) const
{
  return (wxString&)m_windowName;
}

bool wxWindow::IsShown(void) const
{
  return m_isShown;
}

bool wxWindow::IsRetained(void)
{
  return FALSE;
}

wxWindow *wxWindow::FindWindow( long id )
{
  if (id == m_windowId) return this;
  wxNode *node = m_children.First();
  while (node)
  {
    wxWindow *child = (wxWindow*)node->Data();
    wxWindow *res = child->FindWindow( id );
    if (res) return res;
    node = node->Next();
  }
  return (wxWindow *) NULL;
}

wxWindow *wxWindow::FindWindow( const wxString& name )
{
  if (name == m_windowName) return this;
  wxNode *node = m_children.First();
  while (node)
  {
    wxWindow *child = (wxWindow*)node->Data();
    wxWindow *res = child->FindWindow( name );
    if (res) return res;
    node = node->Next();
  }
  return (wxWindow *) NULL;
}

void wxWindow::SetScrollbar( int orient, int pos, int thumbVisible,
      int range, bool WXUNUSED(refresh) )
{
  if (!m_wxwindow) return;

  if (orient == wxHORIZONTAL)
  {
    float fpos = (float)pos;
    m_oldHorizontalPos = fpos;
    float frange = (float)range;
    float fthumb = (float)thumbVisible;
    
    if ((fabs(fpos-m_hAdjust->value) < 0.2) &&
        (fabs(frange-m_hAdjust->upper) < 0.2) &&
  (fabs(fthumb-m_hAdjust->page_size) < 0.2))
      return;
      
    m_hAdjust->lower = 0.0;
    m_hAdjust->upper = frange;
    m_hAdjust->value = fpos;
    m_hAdjust->step_increment = 1.0;
    m_hAdjust->page_increment = (float)(wxMax(fthumb-2,0));
    m_hAdjust->page_size = fthumb;
  }
  else
  {
    float fpos = (float)pos;
    m_oldVerticalPos = fpos;
    float frange = (float)range;
    float fthumb = (float)thumbVisible;
    
    if ((fabs(fpos-m_vAdjust->value) < 0.2) &&
        (fabs(frange-m_vAdjust->upper) < 0.2) &&
  (fabs(fthumb-m_vAdjust->page_size) < 0.2))
      return;
      
    m_vAdjust->lower = 0.0;
    m_vAdjust->upper = frange;
    m_vAdjust->value = fpos;
    m_vAdjust->step_increment = 1.0;
    m_vAdjust->page_increment = (float)(wxMax(fthumb-2,0));
    m_vAdjust->page_size = fthumb;
  }
  
  if (m_wxwindow->window)
  {
    if (orient == wxHORIZONTAL)
      gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "changed" );
    else
      gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "changed" );
      
    gtk_widget_set_usize( m_widget, m_width, m_height );
  }
}

void wxWindow::SetScrollPos( int orient, int pos, bool WXUNUSED(refresh) )
{
  if (!m_wxwindow) return;
  
  if (orient == wxHORIZONTAL)
  {
    float fpos = (float)pos;
    m_oldHorizontalPos = fpos;

    if (fabs(fpos-m_hAdjust->value) < 0.2) return;
    m_hAdjust->value = fpos;
  }
  else
  {
    float fpos = (float)pos;
    m_oldVerticalPos = fpos;
    if (fabs(fpos-m_vAdjust->value) < 0.2) return;
    m_vAdjust->value = fpos;
  }
  
  if (m_wxwindow->window)
  {  
    if (orient == wxHORIZONTAL)
      gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" );
    else  
      gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" );
  }
}

int wxWindow::GetScrollThumb( int orient ) const
{
  if (!m_wxwindow) return 0;

  if (orient == wxHORIZONTAL)
    return (int)(m_hAdjust->page_size+0.5);
  else
    return (int)(m_vAdjust->page_size+0.5);
}

int wxWindow::GetScrollPos( int orient ) const
{
  if (!m_wxwindow) return 0;

  if (orient == wxHORIZONTAL)
    return (int)(m_hAdjust->value+0.5);
  else
    return (int)(m_vAdjust->value+0.5);
}

int wxWindow::GetScrollRange( int orient ) const
{
  if (!m_wxwindow) return 0;

  if (orient == wxHORIZONTAL)
    return (int)(m_hAdjust->upper+0.5);
  else
    return (int)(m_vAdjust->upper+0.5);
}

void wxWindow::ScrollWindow( int dx, int dy, const wxRect* WXUNUSED(rect) )
{
  if (!m_wxwindow) return;
  
/*
  bool refresh = FALSE;
    
  if ((m_drawingOffsetX == 0) && (m_drawingOffsetY == 0))
  {
    m_drawingOffsetX = -16000;
    m_drawingOffsetY = -16000;
    refresh = TRUE;
  }
  else
  {
    m_drawingOffsetX += dx;
    m_drawingOffsetY += dy;
  }
  
//  printf( "X: %d  Y: %d  \n", (int)m_drawingOffsetX, (int)m_drawingOffsetY );
  
  gtk_myfixed_set_offset( GTK_MYFIXED(m_wxwindow), m_drawingOffsetX, m_drawingOffsetY );
  
  if (refresh) Refresh();
  
    The code here is very nifty, but it doesn't work with
    overlapping windows...
*/

    int cw = 0;
    int ch = 0;
    GetClientSize( &cw, &ch );
    
    int w = cw - abs(dx);
    int h = ch - abs(dy);
    if ((h < 0) || (w < 0))
    {
      Refresh();
      return;
    }
    int s_x = 0;
    int s_y = 0;
    if (dx < 0) s_x = -dx;
    if (dy < 0) s_y = -dy;
    int d_x = 0;
    int d_y = 0;
    if (dx > 0) d_x = dx;
    if (dy > 0) d_y = dy;
    gdk_window_copy_area( m_wxwindow->window, m_wxwindow->style->fg_gc[0], d_x, d_y,
      m_wxwindow->window, s_x, s_y, w, h );
      
    wxRect rect;
    if (dx < 0) rect.x = cw+dx; else rect.x = 0;
    if (dy < 0) rect.y = ch+dy; else rect.y = 0;
    if (dy != 0) rect.width = cw; else rect.width = abs(dx);
    if (dx != 0) rect.height = ch; else rect.height = abs(dy);
  
    Refresh( TRUE, &rect );
}

//-------------------------------------------------------------------------------------
//          Layout
//-------------------------------------------------------------------------------------

wxLayoutConstraints *wxWindow::GetConstraints(void) const
{
  return m_constraints;
}

void wxWindow::SetConstraints( wxLayoutConstraints *constraints )
{
  if (m_constraints)
  {
    UnsetConstraints(m_constraints);
    delete m_constraints;
  }
  m_constraints = constraints;
  if (m_constraints)
  {
    // Make sure other windows know they're part of a 'meaningful relationship'
    if (m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this))
      m_constraints->left.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
    if (m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this))
      m_constraints->top.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
    if (m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this))
      m_constraints->right.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
    if (m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this))
      m_constraints->bottom.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
    if (m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this))
      m_constraints->width.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
    if (m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this))
      m_constraints->height.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
    if (m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this))
      m_constraints->centreX.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
    if (m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this))
      m_constraints->centreY.GetOtherWindow()->AddConstraintReference((wxWindow *)this);
  }
;
}
;

void wxWindow::SetAutoLayout( bool autoLayout )
{
  m_autoLayout = autoLayout;
}

bool wxWindow::GetAutoLayout(void) const
{
  return m_autoLayout;
}

wxSizer *wxWindow::GetSizer(void) const
{
  return m_windowSizer;
}

void wxWindow::SetSizerParent( wxWindow *win )
{
  m_sizerParent = win;
}

wxWindow *wxWindow::GetSizerParent(void) const
{
  return m_sizerParent;
}

// This removes any dangling pointers to this window
// in other windows' constraintsInvolvedIn lists.
void wxWindow::UnsetConstraints(wxLayoutConstraints *c)
{
  if (c)
  {
    if (c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this))
      c->left.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
    if (c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this))
      c->top.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
    if (c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this))
      c->right.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
    if (c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this))
      c->bottom.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
    if (c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this))
      c->width.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
    if (c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this))
      c->height.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
    if (c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this))
      c->centreX.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
    if (c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this))
      c->centreY.GetOtherWindow()->RemoveConstraintReference((wxWindow *)this);
  }
}

// Back-pointer to other windows we're involved with, so if we delete
// this window, we must delete any constraints we're involved with.
void wxWindow::AddConstraintReference(wxWindow *otherWin)
{
  if (!m_constraintsInvolvedIn)
    m_constraintsInvolvedIn = new wxList;
  if (!m_constraintsInvolvedIn->Member(otherWin))
    m_constraintsInvolvedIn->Append(otherWin);
}

// REMOVE back-pointer to other windows we're involved with.
void wxWindow::RemoveConstraintReference(wxWindow *otherWin)
{
  if (m_constraintsInvolvedIn)
    m_constraintsInvolvedIn->DeleteObject(otherWin);
}

// Reset any constraints that mention this window
void wxWindow::DeleteRelatedConstraints(void)
{
  if (m_constraintsInvolvedIn)
  {
    wxNode *node = m_constraintsInvolvedIn->First();
    while (node)
    {
      wxWindow *win = (wxWindow *)node->Data();
      wxNode *next = node->Next();
      wxLayoutConstraints *constr = win->GetConstraints();

      // Reset any constraints involving this window
      if (constr)
      {
        constr->left.ResetIfWin((wxWindow *)this);
        constr->top.ResetIfWin((wxWindow *)this);
        constr->right.ResetIfWin((wxWindow *)this);
        constr->bottom.ResetIfWin((wxWindow *)this);
        constr->width.ResetIfWin((wxWindow *)this);
        constr->height.ResetIfWin((wxWindow *)this);
        constr->centreX.ResetIfWin((wxWindow *)this);
        constr->centreY.ResetIfWin((wxWindow *)this);
      }
      delete node;
      node = next;
    }
    delete m_constraintsInvolvedIn;
    m_constraintsInvolvedIn = (wxList *) NULL;
  }
}

void wxWindow::SetSizer(wxSizer *sizer)
{
  m_windowSizer = sizer;
  if (sizer)
    sizer->SetSizerParent((wxWindow *)this);
}

/*
 * New version
 */

bool wxWindow::Layout(void)
{
  if (GetConstraints())
  {
    int w, h;
    GetClientSize(&w, &h);
    GetConstraints()->width.SetValue(w);
    GetConstraints()->height.SetValue(h);
  }
  
  // If top level (one sizer), evaluate the sizer's constraints.
  if (GetSizer())
  {
    int noChanges;
    GetSizer()->ResetConstraints();   // Mark all constraints as unevaluated
    GetSizer()->LayoutPhase1(&noChanges);
    GetSizer()->LayoutPhase2(&noChanges);
    GetSizer()->SetConstraintSizes(); // Recursively set the real window sizes
    return TRUE;
  }
  else
  {
    // Otherwise, evaluate child constraints
    ResetConstraints();   // Mark all constraints as unevaluated
    DoPhase(1);           // Just one phase need if no sizers involved
    DoPhase(2);
    SetConstraintSizes(); // Recursively set the real window sizes
  }
  return TRUE;
}


// Do a phase of evaluating constraints:
// the default behaviour. wxSizers may do a similar
// thing, but also impose their own 'constraints'
// and order the evaluation differently.
bool wxWindow::LayoutPhase1(int *noChanges)
{
  wxLayoutConstraints *constr = GetConstraints();
  if (constr)
  {
    return constr->SatisfyConstraints((wxWindow *)this, noChanges);
  }
  else
    return TRUE;
}

bool wxWindow::LayoutPhase2(int *noChanges)
{
  *noChanges = 0;
  
  // Layout children
  DoPhase(1);
  DoPhase(2);
  return TRUE;
}

// Do a phase of evaluating child constraints
bool wxWindow::DoPhase(int phase)
{
  int noIterations = 0;
  int maxIterations = 500;
  int noChanges = 1;
  int noFailures = 0;
  wxList succeeded;
  while ((noChanges > 0) && (noIterations < maxIterations))
  {
    noChanges = 0;
    noFailures = 0;
    wxNode *node = GetChildren()->First();
    while (node)
    {
      wxWindow *child = (wxWindow *)node->Data();
      if (!child->IsKindOf(CLASSINFO(wxFrame)) && !child->IsKindOf(CLASSINFO(wxDialog)))
      {
        wxLayoutConstraints *constr = child->GetConstraints();
        if (constr)
        {
          if (succeeded.Member(child))
          {
          }
          else
          {
            int tempNoChanges = 0;
            bool success = ( (phase == 1) ? child->LayoutPhase1(&tempNoChanges) : child->LayoutPhase2(&tempNoChanges) ) ;
            noChanges += tempNoChanges;
            if (success)
            {
              succeeded.Append(child);
            }
          }
        }
      }
      node = node->Next();
    }
    noIterations ++;
  }
  return TRUE;
}

void wxWindow::ResetConstraints(void)
{
  wxLayoutConstraints *constr = GetConstraints();
  if (constr)
  {
    constr->left.SetDone(FALSE);
    constr->top.SetDone(FALSE);
    constr->right.SetDone(FALSE);
    constr->bottom.SetDone(FALSE);
    constr->width.SetDone(FALSE);
    constr->height.SetDone(FALSE);
    constr->centreX.SetDone(FALSE);
    constr->centreY.SetDone(FALSE);
  }
  wxNode *node = GetChildren()->First();
  while (node)
  {
    wxWindow *win = (wxWindow *)node->Data();
    if (!win->IsKindOf(CLASSINFO(wxFrame)) && !win->IsKindOf(CLASSINFO(wxDialog)))
      win->ResetConstraints();
    node = node->Next();
  }
}

// Need to distinguish between setting the 'fake' size for
// windows and sizers, and setting the real values.
void wxWindow::SetConstraintSizes(bool recurse)
{
  wxLayoutConstraints *constr = GetConstraints();
  if (constr && constr->left.GetDone() && constr->right.GetDone() &&
                constr->width.GetDone() && constr->height.GetDone())
  {
    int x = constr->left.GetValue();
    int y = constr->top.GetValue();
    int w = constr->width.GetValue();
    int h = constr->height.GetValue();

    // If we don't want to resize this window, just move it...
    if ((constr->width.GetRelationship() != wxAsIs) ||
        (constr->height.GetRelationship() != wxAsIs))
    {
      // Calls Layout() recursively. AAAGH. How can we stop that.
      // Simply take Layout() out of non-top level OnSizes.
      SizerSetSize(x, y, w, h);
    }
    else
    {
      SizerMove(x, y);
    }
  }
  else if (constr)
  {
    char *windowClass = this->GetClassInfo()->GetClassName();

    wxString winName;
  if (GetName() == "")
    winName = _("unnamed");
  else
    winName = GetName();
    wxDebugMsg(_("Constraint(s) not satisfied for window of type %s, name %s:\n"), (const char *)windowClass, (const char *)winName);
    if (!constr->left.GetDone())
      wxDebugMsg(_("  unsatisfied 'left' constraint.\n"));
    if (!constr->right.GetDone())
      wxDebugMsg(_("  unsatisfied 'right' constraint.\n"));
    if (!constr->width.GetDone())
      wxDebugMsg(_("  unsatisfied 'width' constraint.\n"));
    if (!constr->height.GetDone())
      wxDebugMsg(_("  unsatisfied 'height' constraint.\n"));
    wxDebugMsg(_("Please check constraints: try adding AsIs() constraints.\n"));
  }

  if (recurse)
  {
    wxNode *node = GetChildren()->First();
    while (node)
    {
      wxWindow *win = (wxWindow *)node->Data();
      if (!win->IsKindOf(CLASSINFO(wxFrame)) && !win->IsKindOf(CLASSINFO(wxDialog)))
        win->SetConstraintSizes();
      node = node->Next();
    }
  }
}

// This assumes that all sizers are 'on' the same
// window, i.e. the parent of this window.
void wxWindow::TransformSizerToActual(int *x, int *y) const
{
  if (!m_sizerParent || m_sizerParent->IsKindOf(CLASSINFO(wxDialog)) ||
         m_sizerParent->IsKindOf(CLASSINFO(wxFrame)) )
    return;
    
  int xp, yp;
  m_sizerParent->GetPosition(&xp, &yp);
  m_sizerParent->TransformSizerToActual(&xp, &yp);
  *x += xp;
  *y += yp;
}

void wxWindow::SizerSetSize(int x, int y, int w, int h)
{
  int xx = x;
  int yy = y;
  TransformSizerToActual(&xx, &yy);
  SetSize(xx, yy, w, h);
}

void wxWindow::SizerMove(int x, int y)
{
  int xx = x;
  int yy = y;
  TransformSizerToActual(&xx, &yy);
  Move(xx, yy);
}

// Only set the size/position of the constraint (if any)
void wxWindow::SetSizeConstraint(int x, int y, int w, int h)
{
  wxLayoutConstraints *constr = GetConstraints();
  if (constr)
  {
    if (x != -1)
    {
      constr->left.SetValue(x);
      constr->left.SetDone(TRUE);
    }
    if (y != -1)
    {
      constr->top.SetValue(y);
      constr->top.SetDone(TRUE);
    }
    if (w != -1)
    {
      constr->width.SetValue(w);
      constr->width.SetDone(TRUE);
    }
    if (h != -1)
    {
      constr->height.SetValue(h);
      constr->height.SetDone(TRUE);
    }
  }
}

void wxWindow::MoveConstraint(int x, int y)
{
  wxLayoutConstraints *constr = GetConstraints();
  if (constr)
  {
    if (x != -1)
    {
      constr->left.SetValue(x);
      constr->left.SetDone(TRUE);
    }
    if (y != -1)
    {
      constr->top.SetValue(y);
      constr->top.SetDone(TRUE);
    }
  }
}

void wxWindow::GetSizeConstraint(int *w, int *h) const
{
  wxLayoutConstraints *constr = GetConstraints();
  if (constr)
  {
    *w = constr->width.GetValue();
    *h = constr->height.GetValue();
  }
  else
    GetSize(w, h);
}

void wxWindow::GetClientSizeConstraint(int *w, int *h) const
{
  wxLayoutConstraints *constr = GetConstraints();
  if (constr)
  {
    *w = constr->width.GetValue();
    *h = constr->height.GetValue();
  }
  else
    GetClientSize(w, h);
}

void wxWindow::GetPositionConstraint(int *x, int *y) const
{
  wxLayoutConstraints *constr = GetConstraints();
  if (constr)
  {
    *x = constr->left.GetValue();
    *y = constr->top.GetValue();
  }
  else
    GetPosition(x, y);
}

bool wxWindow::AcceptsFocus() const
{
  return IsEnabled() && IsShown();
}

void wxWindow::OnIdle(wxIdleEvent& WXUNUSED(event) )
{
  UpdateWindowUI();
}