X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f234c60c4aac2e077b16b8fbb3009ad45a84c73b..057b55b016d9e2076fde422f29948dc55e97f0d7:/src/gtk/dialog.cpp

diff --git a/src/gtk/dialog.cpp b/src/gtk/dialog.cpp
index b8c54679b7..a4532f5d19 100644
--- a/src/gtk/dialog.cpp
+++ b/src/gtk/dialog.cpp
@@ -14,29 +14,53 @@
 #include "wx/dialog.h"
 #include "wx/frame.h"
 #include "wx/app.h"
+#include "wx/cursor.h"
+
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
 
-#include "gdk/gdk.h"
-#include "gtk/gtk.h"
 #include "wx/gtk/win_gtk.h"
 
+//-----------------------------------------------------------------------------
+// idle system
+//-----------------------------------------------------------------------------
+
+extern void wxapp_install_idle_handler();
+extern bool g_isIdle;
+extern int g_openDialogs;
+
+//-----------------------------------------------------------------------------
+// data
 //-----------------------------------------------------------------------------
 
 extern wxList wxPendingDelete;
 
+//-----------------------------------------------------------------------------
+// "focus" from m_window
+//-----------------------------------------------------------------------------
+
+static gint gtk_dialog_focus_callback( GtkWidget *widget, GtkDirectionType WXUNUSED(d), wxWindow *WXUNUSED(win) )
+{
+    if (g_isIdle)
+        wxapp_install_idle_handler();
+
+    // This disables GTK's tab traversal
+    gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "focus" );
+    return TRUE;
+}
+
 //-----------------------------------------------------------------------------
 // "delete_event"
 //-----------------------------------------------------------------------------
 
 bool gtk_dialog_delete_callback( GtkWidget *WXUNUSED(widget), GdkEvent *WXUNUSED(event), wxDialog *win )
 {
-/*
-    printf( "OnDelete from " );
-    if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
-        printf( win->GetClassInfo()->GetClassName() );
-    printf( ".\n" );
-*/
+    if (g_isIdle)
+        wxapp_install_idle_handler();
 
-    win->Close();
+    if (win->IsEnabled())
+        win->Close();
 
     return TRUE;
 }
@@ -47,28 +71,45 @@ bool gtk_dialog_delete_callback( GtkWidget *WXUNUSED(widget), GdkEvent *WXUNUSED
 
 static void gtk_dialog_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxDialog *win )
 {
-    if (!win->HasVMT()) return;
+    if (g_isIdle)
+        wxapp_install_idle_handler();
 
-/*
-    printf( "OnDialogResize from " );
-    if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
-        printf( win->GetClassInfo()->GetClassName() );
-    printf( ".\n" );
-*/
+    if (!win->m_hasVMT) return;
 
-    win->GtkOnSize( alloc->x, alloc->y, alloc->width, alloc->height );
+    if ((win->m_width != alloc->width) || (win->m_height != alloc->height))
+    {
+        win->m_width = alloc->width;
+        win->m_height = alloc->height;
+        win->GtkUpdateSize();
+    }
 }
 
 //-----------------------------------------------------------------------------
 // "configure_event"
 //-----------------------------------------------------------------------------
 
-static gint gtk_dialog_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *event, wxDialog *win )
+static gint
+#if (GTK_MINOR_VERSION > 0)
+gtk_dialog_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *WXUNUSED(event), wxDialog *win )
+#else
+gtk_dialog_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *event, wxDialog *win )
+#endif
 {
-    if (!win->HasVMT()) return FALSE;
+    if (g_isIdle)
+        wxapp_install_idle_handler();
 
+    if (!win->m_hasVMT) return FALSE;
+
+#if (GTK_MINOR_VERSION > 0)
+    int x = 0;
+    int y = 0;
+    gdk_window_get_root_origin( win->m_widget->window, &x, &y );
+    win->m_x = x;
+    win->m_y = y;
+#else
     win->m_x = event->x;
     win->m_y = event->y;
+#endif
 
     wxMoveEvent mevent( wxPoint(win->m_x,win->m_y), win->GetId() );
     mevent.SetEventObject( win );
@@ -77,6 +118,100 @@ static gint gtk_dialog_configure_callback( GtkWidget *WXUNUSED(widget), GdkEvent
     return FALSE;
 }
 
+//-----------------------------------------------------------------------------
+// "realize" from m_widget
+//-----------------------------------------------------------------------------
+
+/* we cannot MWM hints and icons before the widget has been realized,
+   so we do this directly after realization */
+
+static gint
+gtk_dialog_realized_callback( GtkWidget * WXUNUSED(widget), wxDialog *win )
+{
+    if (g_isIdle)
+        wxapp_install_idle_handler();
+
+    /* all this is for Motif Window Manager "hints" and is supposed to be
+       recognized by other WM as well. not tested. */
+    long decor = (long) GDK_DECOR_BORDER;
+    long func = (long) GDK_FUNC_MOVE ;
+
+    /* Some WM don't display any border around the frame contents if
+       used with these hints, so we add a resize border around it,
+       without automatically allowinng it to be resized though.
+
+       This avoids the problem, but looks odd. What shall we do?
+    */
+    decor |= GDK_DECOR_RESIZEH;
+
+    if ((win->GetWindowStyle() & wxCAPTION) != 0)
+        decor |= GDK_DECOR_TITLE;
+    if ((win->GetWindowStyle() & wxSYSTEM_MENU) != 0)
+    {
+       decor |= GDK_DECOR_MENU;
+       func |= GDK_FUNC_CLOSE;
+    }
+    if ((win->GetWindowStyle() & wxMINIMIZE_BOX) != 0)
+    {
+        func |= GDK_FUNC_MINIMIZE;
+        decor |= GDK_DECOR_MINIMIZE;
+    }
+    if ((win->GetWindowStyle() & wxMAXIMIZE_BOX) != 0)
+    {
+        decor |= GDK_DECOR_MAXIMIZE;
+        func |= GDK_FUNC_MAXIMIZE;
+    }
+    if ((win->GetWindowStyle() & wxRESIZE_BORDER) != 0)
+    {
+       func |= GDK_FUNC_RESIZE;
+       decor |= GDK_DECOR_RESIZEH;
+    }
+    gdk_window_set_decorations( win->m_widget->window, (GdkWMDecoration)decor);
+    gdk_window_set_functions( win->m_widget->window, (GdkWMFunction)func);
+
+    /* GTK's shrinking/growing policy */
+    if ((win->GetWindowStyle() & wxRESIZE_BORDER) == 0)
+        gtk_window_set_policy(GTK_WINDOW(win->m_widget), 0, 0, 1);
+    else
+        gtk_window_set_policy(GTK_WINDOW(win->m_widget), 1, 1, 1);
+
+    /* reset the icon */
+    if (win->m_icon != wxNullIcon)
+    {
+        wxIcon icon( win->m_icon );
+        win->m_icon = wxNullIcon;
+        win->SetIcon( icon );
+    }
+
+    return FALSE;
+}
+
+//-----------------------------------------------------------------------------
+// InsertChild for wxDialog
+//-----------------------------------------------------------------------------
+
+/* Callback for wxFrame. This very strange beast has to be used because
+ * C++ has no virtual methods in a constructor. We have to emulate a
+ * virtual function here as wxWindows requires different ways to insert
+ * a child in container classes. */
+
+static void wxInsertChildInDialog( wxDialog* parent, wxWindow* child )
+{
+    gtk_pizza_put( GTK_PIZZA(parent->m_wxwindow),
+                     GTK_WIDGET(child->m_widget),
+                     child->m_x,
+                     child->m_y,
+                     child->m_width,
+                     child->m_height );
+
+    if (parent->HasFlag(wxTAB_TRAVERSAL))
+    {
+        /* we now allow a window to get the focus as long as it
+           doesn't have any children. */
+        GTK_WIDGET_UNSET_FLAGS( parent->m_wxwindow, GTK_CAN_FOCUS );
+    }
+}
+
 //-----------------------------------------------------------------------------
 // wxDialog
 //-----------------------------------------------------------------------------
@@ -91,10 +226,12 @@ END_EVENT_TABLE()
 
 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxPanel)
 
-wxDialog::wxDialog()
+void wxDialog::Init()
 {
-    m_title = "";
+    m_returnCode = 0;
+    m_sizeSet = FALSE;
     m_modalShowing = FALSE;
+    m_themeEnabled = TRUE;
 }
 
 wxDialog::wxDialog( wxWindow *parent,
@@ -102,7 +239,8 @@ wxDialog::wxDialog( wxWindow *parent,
                     const wxPoint &pos, const wxSize &size,
                     long style, const wxString &name )
 {
-    m_modalShowing = FALSE;
+    Init();
+
     Create( parent, id, title, pos, size, style, name );
 }
 
@@ -115,17 +253,32 @@ bool wxDialog::Create( wxWindow *parent,
 
     m_needParent = FALSE;
 
-    PreCreation( parent, id, pos, size, style, name );
+    if (!PreCreation( parent, pos, size ) ||
+        !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
+    {
+        wxFAIL_MSG( wxT("wxDialog creation failed") );
+        return FALSE;
+    }
 
-    m_widget = gtk_window_new( GTK_WINDOW_TOPLEVEL );
-    GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
+    // All dialogs should really have this style
+    m_windowStyle |= wxTAB_TRAVERSAL;
+
+    m_insertCallback = (wxInsertChildFunction) wxInsertChildInDialog;
+
+    m_widget = gtk_window_new( GTK_WINDOW_DIALOG );
 
-    gtk_widget_set( m_widget, "GtkWindow::allow_shrink", TRUE, NULL);
+    if ((m_parent) && (GTK_IS_WINDOW(m_parent->m_widget)))
+        gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(m_parent->m_widget) );
+
+    if (!name.IsEmpty())
+        gtk_window_set_wmclass( GTK_WINDOW(m_widget), name.mb_str(), name.mb_str() );
+
+    GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 
     gtk_signal_connect( GTK_OBJECT(m_widget), "delete_event",
         GTK_SIGNAL_FUNC(gtk_dialog_delete_callback), (gpointer)this );
 
-    m_wxwindow = gtk_myfixed_new();
+    m_wxwindow = gtk_pizza_new();
     gtk_widget_show( m_wxwindow );
     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 
@@ -133,34 +286,39 @@ bool wxDialog::Create( wxWindow *parent,
 
     SetTitle( title );
 
+    if (m_parent) m_parent->AddChild( this );
+
+    PostCreation();
+
     if ((m_x != -1) || (m_y != -1))
         gtk_widget_set_uposition( m_widget, m_x, m_y );
-
     gtk_widget_set_usize( m_widget, m_width, m_height );
 
+    /*  we cannot set MWM hints  before the widget has
+        been realized, so we do this directly after realization */
+    gtk_signal_connect( GTK_OBJECT(m_widget), "realize",
+                        GTK_SIGNAL_FUNC(gtk_dialog_realized_callback), (gpointer) this );
+
+    /* the user resized the frame by dragging etc. */
     gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
         GTK_SIGNAL_FUNC(gtk_dialog_size_callback), (gpointer)this );
 
     gtk_signal_connect( GTK_OBJECT(m_widget), "configure_event",
         GTK_SIGNAL_FUNC(gtk_dialog_configure_callback), (gpointer)this );
 
-    if (m_parent) m_parent->AddChild( this );
-
-    PostCreation();
+    /* disable native tab traversal */
+    gtk_signal_connect( GTK_OBJECT(m_widget), "focus",
+        GTK_SIGNAL_FUNC(gtk_dialog_focus_callback), (gpointer)this );
 
     return TRUE;
 }
 
 wxDialog::~wxDialog()
 {
-    wxTopLevelWindows.DeleteObject( this );
-
-    if (wxTheApp->GetTopWindow() == this)
-    {
-        wxTheApp->SetTopWindow( (wxWindow*) NULL );
-    }
+    CleanUp();
 
-    if (wxTopLevelWindows.Number() == 0)
+    if ((wxTopLevelWindows.Number() == 0) &&
+        (wxTheApp->GetExitOnFrameDelete()))
     {
         wxTheApp->ExitMainLoop();
     }
@@ -169,13 +327,12 @@ wxDialog::~wxDialog()
 void wxDialog::SetTitle( const wxString& title )
 {
     m_title = title;
-    if (m_title.IsNull()) m_title = "";
-    gtk_window_set_title( GTK_WINDOW(m_widget), m_title );
+    gtk_window_set_title( GTK_WINDOW(m_widget), m_title.mbc_str() );
 }
 
 wxString wxDialog::GetTitle() const
 {
-    return (wxString&)m_title;
+    return m_title;
 }
 
 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
@@ -192,13 +349,13 @@ void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
     else
     {
         SetReturnCode(wxID_CANCEL);
-        this->Show(FALSE);
+        Show(FALSE);
     }
 }
 
 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
 {
-    if ( Validate() && TransferDataFromWindow())
+    if (Validate() && TransferDataFromWindow())
     {
         if (IsModal())
         {
@@ -207,7 +364,7 @@ void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
         else
         {
             SetReturnCode(wxID_OK);
-            this->Show(FALSE);
+            Show(FALSE);
         }
     }
 }
@@ -217,7 +374,7 @@ void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
     // yes
 }
 
-void wxDialog::OnCloseWindow(wxCloseEvent& event)
+void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 {
     // We'll send a Cancel message by default,
     // which may close the dialog.
@@ -233,102 +390,101 @@ void wxDialog::OnCloseWindow(wxCloseEvent& event)
     // sure to destroy the dialog.
     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 
-    static wxList closing;
+    static wxList s_closing;
 
-    if (closing.Member(this))
+    if (s_closing.Member(this))
         return;   // no loops
 
-    closing.Append(this);
+    s_closing.Append(this);
 
     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
     cancelEvent.SetEventObject( this );
     GetEventHandler()->ProcessEvent(cancelEvent);
-    closing.DeleteObject(this);
+    s_closing.DeleteObject(this);
 }
 
 bool wxDialog::Destroy()
 {
-    if (!wxPendingDelete.Member(this)) wxPendingDelete.Append(this);
+    // schedule the dialog for the deletion
+    if ( !wxPendingDelete.Member(this) )
+    {
+        wxPendingDelete.Append(this);
+    }
+
+    // don't leave a dangling pointer as the app top window, we can be deleted
+    // any moment at all now!
+    CleanUp();
 
     return TRUE;
 }
 
-void wxDialog::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y), int width, int height )
+void wxDialog::CleanUp()
 {
-    // due to a bug in gtk, x,y are always 0
-    // m_x = x;
-    // m_y = y;
-
-    if ((m_height == height) && (m_width == width) &&
-        (m_sizeSet)) return;
-    if (!m_wxwindow) return;
-
-    m_width = width;
-    m_height = height;
-
-    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_maxWidth;
-    if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
-
-    gtk_widget_set_usize( m_widget, m_width, m_height );
+    m_isBeingDeleted = TRUE;
 
-    m_sizeSet = TRUE;
+    if ( wxTheApp->GetTopWindow() == this )
+    {
+        wxTheApp->SetTopWindow( (wxWindow*) NULL );
+    }
 
-    wxSizeEvent event( wxSize(m_width,m_height), GetId() );
-    event.SetEventObject( this );
-    GetEventHandler()->ProcessEvent( event );
+    wxTopLevelWindows.DeleteObject( this );
 }
 
 void wxDialog::OnSize( wxSizeEvent &WXUNUSED(event) )
 {
-    wxASSERT_MSG( (m_widget != NULL), "invalid dialog" );
+    wxASSERT_MSG( (m_widget != NULL), wxT("invalid dialog") );
 
+#if wxUSE_CONSTRAINTS
     if (GetAutoLayout())
     {
         Layout();
     }
     else
+#endif // wxUSE_CONSTRAINTS
     {
-        // no child: go out !
+        /* no child: go out ! */
         if (!GetChildren().First()) return;
 
-        // do we have exactly one child?
+        /* do we have exactly one child? */
         wxWindow *child = (wxWindow *) NULL;
         for(wxNode *node = GetChildren().First(); node; node = node->Next())
         {
             wxWindow *win = (wxWindow *)node->Data();
             if (!wxIS_KIND_OF(win,wxFrame) && !wxIS_KIND_OF(win,wxDialog))
             {
-                // it's the second one: do nothing
+                /* it's the second one: do nothing */
                 if (child) return;
                 child = win;
             }
         }
 
-        // yes: set it's size to fill all the frame
+        /* yes: set it's size to fill all the frame */
         int client_x, client_y;
         GetClientSize( &client_x, &client_y );
         child->SetSize( 1, 1, client_x-2, client_y);
     }
 }
 
-void wxDialog::SetSize( int x, int y, int width, int height, int sizeFlags )
+void wxDialog::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
 {
-    wxASSERT_MSG( (m_widget != NULL), "invalid window" );
+    wxFAIL_MSG( wxT("DoMoveWindow called for wxDialog") );
+}
 
-    // Don't do anything for children of wxMDIChildFrame
-    if (!m_wxwindow) return;
+void wxDialog::DoSetSize( int x, int y, int width, int height, int sizeFlags )
+{
+    wxASSERT_MSG( (m_widget != NULL), wxT("invalid dialog") );
+    wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid dialog") );
 
-    if (m_resizing) return; // I don't like recursions
+    if (m_resizing) return; /* I don't like recursions */
     m_resizing = TRUE;
 
     int old_x = m_x;
     int old_y = m_y;
+
     int old_width = m_width;
     int old_height = m_height;
 
-    if ((sizeFlags & wxSIZE_USE_EXISTING) == wxSIZE_USE_EXISTING)
+    if ((sizeFlags & wxSIZE_ALLOW_MINUS_ONE) == 0)
     {
         if (x != -1) m_x = x;
         if (y != -1) m_y = y;
@@ -343,6 +499,7 @@ void wxDialog::SetSize( int x, int y, int width, int height, int sizeFlags )
         m_height = height;
     }
 
+/*
     if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
     {
         if (width == -1) m_width = 80;
@@ -352,6 +509,7 @@ void wxDialog::SetSize( int x, int y, int width, int height, int sizeFlags )
     {
        if (height == -1) m_height = 26;
     }
+*/
 
     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
@@ -361,53 +519,93 @@ void wxDialog::SetSize( int x, int y, int width, int height, int sizeFlags )
     if ((m_x != -1) || (m_y != -1))
     {
         if ((m_x != old_x) || (m_y != old_y))
+        {
+            /* we set the position here and when showing the dialog
+               for the first time in idle time */
             gtk_widget_set_uposition( m_widget, m_x, m_y );
+        }
     }
 
     if ((m_width != old_width) || (m_height != old_height))
     {
         gtk_widget_set_usize( m_widget, m_width, m_height );
+
+        /* actual resizing is deferred to GtkOnSize in idle time and
+           when showing the dialog */
+        m_sizeSet = FALSE;
     }
 
+    m_resizing = FALSE;
+}
+
+void wxDialog::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y), int width, int height )
+{
+    // due to a bug in gtk, x,y are always 0
+    // m_x = x;
+    // m_y = y;
+
+    if ((m_height == height) && (m_width == width) && (m_sizeSet)) return;
+    if (!m_wxwindow) return;
+
+    m_width = width;
+    m_height = height;
+
+    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_maxWidth;
+    if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
+
+    /* set size hints */
+    gint flag = 0; // GDK_HINT_POS;
+    if ((m_minWidth != -1) || (m_minHeight != -1)) flag |= GDK_HINT_MIN_SIZE;
+    if ((m_maxWidth != -1) || (m_maxHeight != -1)) flag |= GDK_HINT_MAX_SIZE;
+    GdkGeometry geom;
+    geom.min_width = m_minWidth;
+    geom.min_height = m_minHeight;
+    geom.max_width = m_maxWidth;
+    geom.max_height = m_maxHeight;
+    gtk_window_set_geometry_hints( GTK_WINDOW(m_widget),
+                                   (GtkWidget*) NULL,
+                                   &geom,
+                                   (GdkWindowHints) flag );
+
     m_sizeSet = TRUE;
 
     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
     event.SetEventObject( this );
     GetEventHandler()->ProcessEvent( event );
-
-    m_resizing = FALSE;
 }
 
-void wxDialog::SetSize( int width, int height )
+void wxDialog::OnInternalIdle()
 {
-    SetSize( -1, -1, width, height, wxSIZE_USE_EXISTING );
-}
+    if (!m_sizeSet && GTK_WIDGET_REALIZED(m_wxwindow))
+        GtkOnSize( m_x, m_y, m_width, m_height );
 
-void wxDialog::Centre( int direction )
-{
-    wxASSERT_MSG( (m_widget != NULL), "invalid frame" );
-
-    int x = 0;
-    int y = 0;
-
-    if (direction & wxHORIZONTAL == wxHORIZONTAL) x = (gdk_screen_width () - m_width) / 2;
-    if (direction & wxVERTICAL == wxVERTICAL) y = (gdk_screen_height () - m_height) / 2;
-
-    Move( x, y );
+    wxWindow::OnInternalIdle();
 }
 
 bool wxDialog::Show( bool show )
 {
     if (!show && IsModal())
     {
-      EndModal( wxID_CANCEL );
+        EndModal( wxID_CANCEL );
     }
 
-    wxWindow::Show( show );
+    if (show && !m_sizeSet)
+    {
+        /* by calling GtkOnSize here, we don't have to call
+           either after showing the frame, which would entail
+           much ugly flicker nor from within the size_allocate
+           handler, because GTK 1.1.X forbids that. */
+
+        GtkOnSize( m_x, m_y, m_width, m_height );
+    }
+
+    bool ret = wxWindow::Show( show );
 
     if (show) InitDialog();
 
-    return TRUE;
+    return ret;
 }
 
 bool wxDialog::IsModal() const
@@ -423,25 +621,43 @@ void wxDialog::SetModal( bool WXUNUSED(flag) )
   else
     if (m_windowStyle & wxDIALOG_MODAL) m_windowStyle -= wxDIALOG_MODAL;
 */
-    wxFAIL_MSG( "wxDialog:SetModal obsolete now" );
+    wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
 }
 
 int wxDialog::ShowModal()
 {
     if (IsModal())
     {
-       wxFAIL_MSG( "wxDialog:ShowModal called twice" );
+       wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") );
        return GetReturnCode();
     }
-    
+
+    // use the apps top level window as parent if none given unless explicitly
+    // forbidden
+    if ( !GetParent() && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
+    {
+        wxWindow *parent = wxTheApp->GetTopWindow();
+        if ( parent && parent != this )
+        {
+            m_parent = parent;
+            gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(parent->m_widget) );
+        }
+    }
+
+    wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
+
     Show( TRUE );
 
     m_modalShowing = TRUE;
 
+    g_openDialogs++;
+
     gtk_grab_add( m_widget );
     gtk_main();
     gtk_grab_remove( m_widget );
 
+    g_openDialogs--;
+
     return GetReturnCode();
 }
 
@@ -451,7 +667,7 @@ void wxDialog::EndModal( int retCode )
 
     if (!IsModal())
     {
-        wxFAIL_MSG( "wxDialog:EndModal called twice" );
+        wxFAIL_MSG( wxT("wxDialog:EndModal called twice") );
         return;
     }
 
@@ -472,6 +688,8 @@ void wxDialog::SetIcon( const wxIcon &icon )
     m_icon = icon;
     if (!icon.Ok()) return;
 
+    if (!m_widget->window) return;
+
     wxMask *mask = icon.GetMask();
     GdkBitmap *bm = (GdkBitmap *) NULL;
     if (mask) bm = mask->GetBitmap();