fixed wxEVT_CONTEXT_MENU generation (it works differently under w2k/XP than under...

[wxWidgets.git] / src / msw / button.cpp

diff --git a/src/msw/button.cpp b/src/msw/button.cpp
index 80e8318503d2d20d5de7f5a63a8b85a6b4238495..bffc09013b8e237a7a176cce9358e3d5122c9e68 100644 (file)
--- a/src/msw/button.cpp
+++ b/src/msw/button.cpp
@@ -1,200 +1,694 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        button.cpp
+// Name:        msw/button.cpp

 // Purpose:     wxButton
 // Author:      Julian Smart
 // Modified by:
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Purpose:     wxButton
 // Author:      Julian Smart
 // Modified by:
 // Created:     04/01/98
 // RCS-ID:      $Id$

-// Copyright:   (c) Julian Smart and Markus Holzem
-// Licence:    wxWindows license
+// Copyright:   (c) Julian Smart
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "button.h"
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
+    #pragma implementation "button.h"

 #endif
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
 #endif
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__

-#pragma hdrstop
+    #pragma hdrstop

 #endif
 
 #endif
 

+#if wxUSE_BUTTON
+

 #ifndef WX_PRECOMP
 #ifndef WX_PRECOMP

-#include "wx/button.h"
-#include "wx/brush.h"
+    #include "wx/app.h"
+    #include "wx/button.h"
+    #include "wx/brush.h"
+    #include "wx/panel.h"
+    #include "wx/bmpbuttn.h"
+    #include "wx/settings.h"
+    #include "wx/dcscreen.h"

 #endif
 
 #include "wx/msw/private.h"
 
 #endif
 
 #include "wx/msw/private.h"
 

-#if !USE_SHARED_LIBRARY
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
+
+#if wxUSE_EXTENDED_RTTI
+
+WX_DEFINE_FLAGS( wxButtonStyle )
+
+wxBEGIN_FLAGS( wxButtonStyle )
+    // new style border flags, we put them first to
+    // use them for streaming out
+    wxFLAGS_MEMBER(wxBORDER_SIMPLE)
+    wxFLAGS_MEMBER(wxBORDER_SUNKEN)
+    wxFLAGS_MEMBER(wxBORDER_DOUBLE)
+    wxFLAGS_MEMBER(wxBORDER_RAISED)
+    wxFLAGS_MEMBER(wxBORDER_STATIC)
+    wxFLAGS_MEMBER(wxBORDER_NONE)
+    
+    // old style border flags
+    wxFLAGS_MEMBER(wxSIMPLE_BORDER)
+    wxFLAGS_MEMBER(wxSUNKEN_BORDER)
+    wxFLAGS_MEMBER(wxDOUBLE_BORDER)
+    wxFLAGS_MEMBER(wxRAISED_BORDER)
+    wxFLAGS_MEMBER(wxSTATIC_BORDER)
+    wxFLAGS_MEMBER(wxBORDER)
+
+    // standard window styles
+    wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
+    wxFLAGS_MEMBER(wxCLIP_CHILDREN)
+    wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
+    wxFLAGS_MEMBER(wxWANTS_CHARS)
+    wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
+    wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
+    wxFLAGS_MEMBER(wxVSCROLL)
+    wxFLAGS_MEMBER(wxHSCROLL)
+
+    wxFLAGS_MEMBER(wxBU_LEFT)
+    wxFLAGS_MEMBER(wxBU_RIGHT)
+    wxFLAGS_MEMBER(wxBU_TOP)
+    wxFLAGS_MEMBER(wxBU_BOTTOM)
+    wxFLAGS_MEMBER(wxBU_EXACTFIT)
+wxEND_FLAGS( wxButtonStyle )
+
+IMPLEMENT_DYNAMIC_CLASS_XTI(wxButton, wxControl,"wx/button.h")
+
+wxBEGIN_PROPERTIES_TABLE(wxButton)
+       wxEVENT_PROPERTY( Click , wxEVT_COMMAND_BUTTON_CLICKED , wxCommandEvent)
+
+       wxPROPERTY( Font , wxFont , SetFont , GetFont  , , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
+       wxPROPERTY( Label, wxString , SetLabel, GetLabel, wxString(), 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
+
+    wxPROPERTY_FLAGS( WindowStyle , wxButtonStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
+
+wxEND_PROPERTIES_TABLE()
+
+wxBEGIN_HANDLERS_TABLE(wxButton)
+wxEND_HANDLERS_TABLE()
+
+wxCONSTRUCTOR_6( wxButton , wxWindow* , Parent , wxWindowID , Id , wxString , Label , wxPoint , Position , wxSize , Size , long , WindowStyle  )
+
+
+#else

 IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
 #endif
 
 IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
 #endif
 

+// this macro tries to adjust the default button height to a reasonable value
+// using the char height as the base

 #define BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cy) (11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)/10)
 
 #define BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cy) (11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)/10)
 

-// Buttons
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// creation/destruction
+// ----------------------------------------------------------------------------
+
+bool wxButton::Create(wxWindow *parent,
+                      wxWindowID id,
+                      const wxString& label,
+                      const wxPoint& pos,
+                      const wxSize& size,
+                      long style,
+                      const wxValidator& validator,
+                      const wxString& name)
+{
+    if ( !CreateControl(parent, id, pos, size, style, validator, name) )
+        return FALSE;
+
+    WXDWORD exstyle;
+    WXDWORD msStyle = MSWGetStyle(style, &exstyle);
+
+#ifdef __WIN32__
+    // if the label contains several lines we must explicitly tell the button
+    // about it or it wouldn't draw it correctly ("\n"s would just appear as
+    // black boxes)
+    //
+    // NB: we do it here and not in MSWGetStyle() because we need the label
+    //     value and m_label is not set yet when MSWGetStyle() is called;
+    //     besides changing BS_MULTILINE during run-time is pointless anyhow
+    if ( label.find(_T('\n')) != wxString::npos )
+    {
+        msStyle |= BS_MULTILINE;
+    }
+#endif // __WIN32__
+
+    return MSWCreateControl(_T("BUTTON"), msStyle, pos, size, label, exstyle);
+}

 
 

-bool wxButton::MSWCommand(WXUINT param, WXWORD id)
+wxButton::~wxButton()

 {
 {

-  if (param == BN_CLICKED || (param == 1)) // 1 for accelerator
-  {
-    wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, id);
-    event.SetEventObject(this);
-    ProcessCommand(event);
-    return TRUE;
-  }
-  else return FALSE;
-}
-
-bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label,
-           const wxPoint& pos,
-           const wxSize& size, long style,
-           const wxValidator& validator,
-           const wxString& name)
-{
-  SetName(name);
-  SetValidator(validator);
-
-  parent->AddChild((wxButton *)this);
-  m_backgroundColour = parent->GetBackgroundColour() ;
-  m_foregroundColour = parent->GetForegroundColour() ;
-
-  m_windowStyle = (long&)style;
+}
+
+// ----------------------------------------------------------------------------
+// flags
+// ----------------------------------------------------------------------------
+
+WXDWORD wxButton::MSWGetStyle(long style, WXDWORD *exstyle) const
+{
+    // buttons never have an external border, they draw their own one
+    WXDWORD msStyle = wxControl::MSWGetStyle
+                      (
+                        (style & ~wxBORDER_MASK) | wxBORDER_NONE, exstyle
+                      );
+
+    // we must use WS_CLIPSIBLINGS with the buttons or they would draw over
+    // each other in any resizeable dialog which has more than one button in
+    // the bottom
+    msStyle |= WS_CLIPSIBLINGS;
+
+#ifdef __WIN32__
+    // don't use "else if" here: weird as it is, but you may combine wxBU_LEFT
+    // and wxBU_RIGHT to get BS_CENTER!
+    if ( style & wxBU_LEFT )
+        msStyle |= BS_LEFT;
+    if ( style & wxBU_RIGHT )
+        msStyle |= BS_RIGHT;
+    if ( style & wxBU_TOP )
+        msStyle |= BS_TOP;
+    if ( style & wxBU_BOTTOM )
+        msStyle |= BS_BOTTOM;
+#ifndef __WXWINCE__
+    // flat 2d buttons
+    if ( style & wxNO_BORDER )
+        msStyle |= BS_FLAT;
+#endif // __WXWINCE__
+#endif // __WIN32__
+
+    return msStyle;
+}

 
 

-  int x = pos.x;
-  int y = pos.y;
-  int width = size.x;
-  int height = size.y;
+// ----------------------------------------------------------------------------
+// size management including autosizing
+// ----------------------------------------------------------------------------
+
+wxSize wxButton::DoGetBestSize() const
+{
+    int wBtn;
+    GetTextExtent(wxGetWindowText(GetHWND()), &wBtn, NULL);

 
 

-  if (id == -1)
-    m_windowId = NewControlId();
-  else
-    m_windowId = id;
+    int wChar, hChar;
+    wxGetCharSize(GetHWND(), &wChar, &hChar, &GetFont());

 
 

-  m_hWnd = (WXHWND)CreateWindowEx
-                   (
-                    MakeExtendedStyle(m_windowStyle),
-                    "BUTTON",
-                    label,
-                    WS_VISIBLE | WS_TABSTOP | WS_CHILD,
-                    0, 0, 0, 0, 
-                    GetWinHwnd(parent),
-                    (HMENU)m_windowId,
-                    wxGetInstance(),
-                    NULL
-                   );
+    // add a margin -- the button is wider than just its label
+    wBtn += 3*wChar;

 
 

-  // Subclass again for purposes of dialog editing mode
-  SubclassWin(m_hWnd);
+    // the button height is proportional to the height of the font used
+    int hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar);

 
 

-  SetFont(parent->GetFont());
+    // all buttons have at least the standard size unless the user explicitly
+    // wants them to be of smaller size and used wxBU_EXACTFIT style when
+    // creating the button
+    if ( !HasFlag(wxBU_EXACTFIT) )
+    {
+        wxSize sz = GetDefaultSize();
+        if (wBtn > sz.x)
+            sz.x = wBtn;
+        if (hBtn > sz.y)
+            sz.y = hBtn;

 
 

-  SetSize(x, y, width, height);
+        return sz;
+    }

 
 

-  return TRUE;
+    return wxSize(wBtn, hBtn);

 }
 
 }
 

-void wxButton::DoSetSize(int x, int y, int width, int height, int sizeFlags)
+/* static */
+wxSize wxButtonBase::GetDefaultSize()

 {
 {

-  int currentX, currentY;
-  GetPosition(&currentX, &currentY);
-  int x1 = x;
-  int y1 = y;
-  if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
-    x1 = currentX;
-  if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
-    y1 = currentY;
+    static wxSize s_sizeBtn;
+
+    if ( s_sizeBtn.x == 0 )
+    {
+        wxScreenDC dc;
+        dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
+
+        // the size of a standard button in the dialog units is 50x14,
+        // translate this to pixels
+        // NB1: the multipliers come from the Windows convention
+        // NB2: the extra +1/+2 were needed to get the size be the same as the
+        //      size of the buttons in the standard dialog - I don't know how
+        //      this happens, but on my system this size is 75x23 in pixels and
+        //      23*8 isn't even divisible by 14... Would be nice to understand
+        //      why these constants are needed though!
+        s_sizeBtn.x = (50 * (dc.GetCharWidth() + 1))/4;
+        s_sizeBtn.y = ((14 * dc.GetCharHeight()) + 2)/8;
+    }
+
+    return s_sizeBtn;
+}

 
 

-  AdjustForParentClientOrigin(x1, y1, sizeFlags);
+// ----------------------------------------------------------------------------
+// default button handling
+// ----------------------------------------------------------------------------

 
 

-  int actualWidth = width;
-  int actualHeight = height;
-  int ww, hh;
-  GetSize(&ww, &hh);
+/*
+   "Everything you ever wanted to know about the default buttons" or "Why do we
+   have to do all this?"
+
+   In MSW the default button should be activated when the user presses Enter
+   and the current control doesn't process Enter itself somehow. This is
+   handled by ::DefWindowProc() (or maybe ::DefDialogProc()) using DM_SETDEFID
+   Another aspect of "defaultness" is that the default button has different
+   appearance: this is due to BS_DEFPUSHBUTTON style which is completely
+   separate from DM_SETDEFID stuff (!). Also note that BS_DEFPUSHBUTTON should
+   be unset if our parent window is not active so it should be unset whenever
+   we lose activation and set back when we regain it.
+
+   Final complication is that when a button is active, it should be the default
+   one, i.e. pressing Enter on a button always activates it and not another
+   one.
+
+   We handle this by maintaining a permanent and a temporary default items in
+   wxControlContainer (both may be NULL). When a button becomes the current
+   control (i.e. gets focus) it sets itself as the temporary default which
+   ensures that it has the right appearance and that Enter will be redirected
+   to it. When the button loses focus, it unsets the temporary default and so
+   the default item will be the permanent default -- that is the default button
+   if any had been set or none otherwise, which is just what we want.
+
+   NB: all this is quite complicated by now and the worst is that normally
+       it shouldn't be necessary at all as for the normal Windows programs
+       DefWindowProc() and IsDialogMessage() take care of all this
+       automatically -- however in wxWindows programs this doesn't work for
+       nested hierarchies (i.e. a notebook inside a notebook) for unknown
+       reason and so we have to reproduce all this code ourselves. It would be
+       very nice if we could avoid doing it.
+ */
+
+// set this button as the (permanently) default one in its panel
+void wxButton::SetDefault()
+{
+    wxWindow *parent = GetParent();

 
 

-  int current_width;
-  int cyf;
-  char buf[300];
-  GetWindowText((HWND) GetHWND(), buf, 300);
-  GetTextExtent(buf, &current_width, &cyf,NULL,NULL,
-    & this->GetFont());
+    wxCHECK_RET( parent, _T("button without parent?") );

 
 

-  // If we're prepared to use the existing width, then...
-  if (width == -1 && ((sizeFlags & wxSIZE_AUTO_WIDTH) != wxSIZE_AUTO_WIDTH))
-    actualWidth = ww;
-  else if (width == -1)
-  {
-    int cx;
-    int cy;
-    wxGetCharSize(GetHWND(), &cx, &cy, & this->GetFont());
-    actualWidth = (int)(current_width + 3*cx) ;
-  }
-  
-  // If we're prepared to use the existing height, then...
-  if (height == -1 && ((sizeFlags & wxSIZE_AUTO_HEIGHT) != wxSIZE_AUTO_HEIGHT))
-    actualHeight = hh;
-  else if (height == -1)
-  {
-    actualHeight = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cyf);
-  }
+    // set this one as the default button both for wxWindows ...
+    wxWindow *winOldDefault = parent->SetDefaultItem(this);

 
 

-  MoveWindow((HWND) GetHWND(), x1, y1, actualWidth, actualHeight, TRUE);
+    // ... and Windows
+    SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), FALSE);
+    SetDefaultStyle(this, TRUE);

 }
 
 }
 

-void wxButton::SetDefault(void)
+// set this button as being currently default
+void wxButton::SetTmpDefault()

 {
 {

-  wxWindow *parent = (wxWindow *)GetParent();
-  if (parent)
-    parent->SetDefaultItem(this);
+    wxWindow *parent = GetParent();

 
 

-  if (parent)
-  {
-    SendMessage((HWND)parent->GetHWND(), DM_SETDEFID, m_windowId, 0L);
-  }
+    wxCHECK_RET( parent, _T("button without parent?") );

 
 

-  SendMessage((HWND)GetHWND(), BM_SETSTYLE, BS_DEFPUSHBUTTON, 1L);
+    wxWindow *winOldDefault = parent->GetDefaultItem();
+    parent->SetTmpDefaultItem(this);
+
+    SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), FALSE);
+    SetDefaultStyle(this, TRUE);

 }
 
 }
 

-wxString wxButton::GetLabel(void) const
+// unset this button as currently default, it may still stay permanent default
+void wxButton::UnsetTmpDefault()

 {
 {

-    GetWindowText((HWND) GetHWND(), wxBuffer, 300);
-    return wxString(wxBuffer);
+    wxWindow *parent = GetParent();
+
+    wxCHECK_RET( parent, _T("button without parent?") );
+
+    parent->SetTmpDefaultItem(NULL);
+
+    wxWindow *winOldDefault = parent->GetDefaultItem();
+
+    SetDefaultStyle(this, FALSE);
+    SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), TRUE);

 }
 
 }
 

-void wxButton::SetLabel(const wxString& label)
+/* static */
+void
+wxButton::SetDefaultStyle(wxButton *btn, bool on)

 {
 {

-  SetWindowText((HWND) GetHWND(), (const char *) label);
+    // we may be called with NULL pointer -- simpler to do the check here than
+    // in the caller which does wxDynamicCast()
+    if ( !btn )
+        return;
+
+    // first, let DefDlgProc() know about the new default button
+    if ( on )
+    {
+        // we shouldn't set BS_DEFPUSHBUTTON for any button if we don't have
+        // focus at all any more
+        if ( !wxTheApp->IsActive() )
+            return;
+
+        // look for a panel-like window
+        wxWindow *win = btn->GetParent();
+        while ( win && !win->HasFlag(wxTAB_TRAVERSAL) )
+            win = win->GetParent();
+
+        if ( win )
+        {
+            ::SendMessage(GetHwndOf(win), DM_SETDEFID, btn->GetId(), 0L);
+
+            // sending DM_SETDEFID also changes the button style to
+            // BS_DEFPUSHBUTTON so there is nothing more to do
+        }
+    }
+
+    // then also change the style as needed
+    long style = ::GetWindowLong(GetHwndOf(btn), GWL_STYLE);
+    if ( !(style & BS_DEFPUSHBUTTON) == on )
+    {
+        // don't do it with the owner drawn buttons because it will
+        // reset BS_OWNERDRAW style bit too (as BS_OWNERDRAW &
+        // BS_DEFPUSHBUTTON != 0)!
+        if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW )
+        {
+            ::SendMessage(GetHwndOf(btn), BM_SETSTYLE,
+                          on ? style | BS_DEFPUSHBUTTON
+                             : style & ~BS_DEFPUSHBUTTON,
+                          1L /* redraw */);
+        }
+        else // owner drawn
+        {
+            // redraw the button - it will notice itself that it's
+            // [not] the default one [any longer]
+            btn->Refresh();
+        }
+    }
+    //else: already has correct style

 }
 
 }
 

-WXHBRUSH wxButton::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
-                       WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
+// ----------------------------------------------------------------------------
+// helpers
+// ----------------------------------------------------------------------------
+
+bool wxButton::SendClickEvent()

 {
 {

-/*
-    WXHBRUSH hBrush = (WXHBRUSH) MSWDefWindowProc(message, wParam, lParam);
-//    ::SetTextColor((HDC) pDC, GetSysColor(COLOR_BTNTEXT));
-    ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(),
-        GetForegroundColour().Blue()));
+    wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
+    event.SetEventObject(this);

 
 

-       return hBrush;
-*/
-  // This doesn't in fact seem to make any difference at all - buttons are always
-  // the same colour.
-  ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
-  ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
+    return ProcessCommand(event);
+}
+
+void wxButton::Command(wxCommandEvent & event)
+{
+    ProcessCommand(event);
+}
+
+// ----------------------------------------------------------------------------
+// event/message handlers
+// ----------------------------------------------------------------------------
+
+bool wxButton::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
+{
+    bool processed = FALSE;
+    switch ( param )
+    {
+        // NOTE: Apparently older versions (NT 4?) of the common controls send
+        //       BN_DOUBLECLICKED but not a second BN_CLICKED for owner-drawn
+        //       buttons, so in order to send two EVET_BUTTON events we should
+        //       catch both types.  Currently (Feb 2003) up-to-date versions of
+        //       win98, win2k and winXP all send two BN_CLICKED messages for
+        //       all button types, so we don't catch BN_DOUBLECLICKED anymore
+        //       in order to not get 3 EVT_BUTTON events.  If this is a problem
+        //       then we need to figure out which version of the comctl32 changed
+        //       this behaviour and test for it.
+
+        case 1:                     // message came from an accelerator
+        case BN_CLICKED:            // normal buttons send this
+            processed = SendClickEvent();
+            break;
+    }
+
+    return processed;
+}

 
 

-  wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
+long wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+{
+    // when we receive focus, we want to temporary become the default button in
+    // our parent panel so that pressing "Enter" would activate us -- and when
+    // losing it we should restore the previous default button as well
+    if ( nMsg == WM_SETFOCUS )
+    {
+        SetTmpDefault();
+
+        // let the default processing take place too
+    }
+    else if ( nMsg == WM_KILLFOCUS )
+    {
+        UnsetTmpDefault();
+    }
+    else if ( nMsg == WM_LBUTTONDBLCLK )
+    {
+        // emulate a click event to force an owner-drawn button to change its
+        // appearance - without this, it won't do it
+        (void)wxControl::MSWWindowProc(WM_LBUTTONDOWN, wParam, lParam);
+
+        // and continue with processing the message normally as well
+    }
+
+    // let the base class do all real processing
+    return wxControl::MSWWindowProc(nMsg, wParam, lParam);
+}
+
+// ----------------------------------------------------------------------------
+// owner-drawn buttons support
+// ----------------------------------------------------------------------------
+
+#ifdef __WIN32__
+
+// drawing helpers
+
+static void DrawButtonText(HDC hdc,
+                           RECT *pRect,
+                           const wxString& text,
+                           COLORREF col)
+{
+    COLORREF colOld = SetTextColor(hdc, col);
+    int modeOld = SetBkMode(hdc, TRANSPARENT);
+
+    // Note: we must have DT_SINGLELINE for DT_VCENTER to work.
+    ::DrawText(hdc, text, text.length(), pRect, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
+
+    SetBkMode(hdc, modeOld);
+    SetTextColor(hdc, colOld);
+}
+
+static void DrawRect(HDC hdc, const RECT& r)
+{
+    wxDrawLine(hdc, r.left, r.top, r.right, r.top);
+    wxDrawLine(hdc, r.right, r.top, r.right, r.bottom);
+    wxDrawLine(hdc, r.right, r.bottom, r.left, r.bottom);
+    wxDrawLine(hdc, r.left, r.bottom, r.left, r.top);
+}
+
+void wxButton::MakeOwnerDrawn()
+{
+    long style = GetWindowLong(GetHwnd(), GWL_STYLE);
+    if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW )
+    {
+        // make it so
+        style |= BS_OWNERDRAW;
+        SetWindowLong(GetHwnd(), GWL_STYLE, style);
+    }
+}
+
+bool wxButton::SetBackgroundColour(const wxColour &colour)
+{
+    if ( !wxControl::SetBackgroundColour(colour) )
+    {
+        // nothing to do
+        return FALSE;
+    }
+
+    MakeOwnerDrawn();
+
+    Refresh();
+
+    return TRUE;
+}
+
+bool wxButton::SetForegroundColour(const wxColour &colour)
+{
+    if ( !wxControl::SetForegroundColour(colour) )
+    {
+        // nothing to do
+        return FALSE;
+    }

 
 

-  // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
-  // has a zero usage count.
-  // NOT NOW; CHANGED.
-//  backgroundBrush->RealizeResource();
-  return (WXHBRUSH) backgroundBrush->GetResourceHandle();
+    MakeOwnerDrawn();
+
+    Refresh();
+
+    return TRUE;

 }
 
 }
 

-void wxButton::Command (wxCommandEvent & event)
+/*
+   The button frame looks like this normally:
+
+   WWWWWWWWWWWWWWWWWWB
+   WHHHHHHHHHHHHHHHHGB  W = white       (HILIGHT)
+   WH               GB  H = light grey  (LIGHT)
+   WH               GB  G = dark grey   (SHADOW)
+   WH               GB  B = black       (DKSHADOW)
+   WH               GB
+   WGGGGGGGGGGGGGGGGGB
+   BBBBBBBBBBBBBBBBBBB
+
+   When the button is selected, the button becomes like this (the total button
+   size doesn't change):
+
+   BBBBBBBBBBBBBBBBBBB
+   BWWWWWWWWWWWWWWWWBB
+   BWHHHHHHHHHHHHHHGBB
+   BWH             GBB
+   BWH             GBB
+   BWGGGGGGGGGGGGGGGBB
+   BBBBBBBBBBBBBBBBBBB
+   BBBBBBBBBBBBBBBBBBB
+
+   When the button is pushed (while selected) it is like:
+
+   BBBBBBBBBBBBBBBBBBB
+   BGGGGGGGGGGGGGGGGGB
+   BG               GB
+   BG               GB
+   BG               GB
+   BG               GB
+   BGGGGGGGGGGGGGGGGGB
+   BBBBBBBBBBBBBBBBBBB
+*/
+
+static void DrawButtonFrame(HDC hdc, const RECT& rectBtn,
+                            bool selected, bool pushed)

 {
 {

-  ProcessCommand (event);
+    RECT r;
+    CopyRect(&r, &rectBtn);
+
+    HPEN hpenBlack   = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DDKSHADOW)),
+         hpenGrey    = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DSHADOW)),
+         hpenLightGr = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DLIGHT)),
+         hpenWhite   = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DHILIGHT));
+
+    HPEN hpenOld = (HPEN)SelectObject(hdc, hpenBlack);
+
+    r.right--;
+    r.bottom--;
+
+    if ( pushed )
+    {
+        DrawRect(hdc, r);
+
+        (void)SelectObject(hdc, hpenGrey);
+        InflateRect(&r, -1, -1);
+
+        DrawRect(hdc, r);
+    }
+    else // !pushed
+    {
+        if ( selected )
+        {
+            DrawRect(hdc, r);
+
+            InflateRect(&r, -1, -1);
+        }
+
+        wxDrawLine(hdc, r.left, r.bottom, r.right, r.bottom);
+        wxDrawLine(hdc, r.right, r.bottom, r.right, r.top - 1);
+
+        (void)SelectObject(hdc, hpenWhite);
+        wxDrawLine(hdc, r.left, r.bottom - 1, r.left, r.top);
+        wxDrawLine(hdc, r.left, r.top, r.right, r.top);
+
+        (void)SelectObject(hdc, hpenLightGr);
+        wxDrawLine(hdc, r.left + 1, r.bottom - 2, r.left + 1, r.top + 1);
+        wxDrawLine(hdc, r.left + 1, r.top + 1, r.right - 1, r.top + 1);
+
+        (void)SelectObject(hdc, hpenGrey);
+        wxDrawLine(hdc, r.left + 1, r.bottom - 1, r.right - 1, r.bottom - 1);
+        wxDrawLine(hdc, r.right - 1, r.bottom - 1, r.right - 1, r.top);
+    }
+
+    (void)SelectObject(hdc, hpenOld);
+    DeleteObject(hpenWhite);
+    DeleteObject(hpenLightGr);
+    DeleteObject(hpenGrey);
+    DeleteObject(hpenBlack);

 }
 
 }
 

+bool wxButton::MSWOnDraw(WXDRAWITEMSTRUCT *wxdis)
+{
+    LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT)wxdis;
+
+    RECT rectBtn;
+    CopyRect(&rectBtn, &lpDIS->rcItem);
+
+    COLORREF colBg = wxColourToRGB(GetBackgroundColour()),
+             colFg = wxColourToRGB(GetForegroundColour());
+
+    HDC hdc = lpDIS->hDC;
+    UINT state = lpDIS->itemState;
+
+    // first, draw the background
+    HBRUSH hbrushBackground = ::CreateSolidBrush(colBg);
+
+    FillRect(hdc, &rectBtn, hbrushBackground);
+
+    // draw the border for the current state
+    bool selected = (state & ODS_SELECTED) != 0;
+    if ( !selected )
+    {
+        wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
+        if ( panel )
+        {
+            selected = panel->GetDefaultItem() == this;
+        }
+    }
+    bool pushed = (SendMessage(GetHwnd(), BM_GETSTATE, 0, 0) & BST_PUSHED) != 0;
+
+    DrawButtonFrame(hdc, rectBtn, selected, pushed);
+
+    // draw the focus rect if needed
+    if ( state & ODS_FOCUS )
+    {
+        RECT rectFocus;
+        CopyRect(&rectFocus, &rectBtn);
+
+        // I don't know where does this constant come from, but this is how
+        // Windows draws them
+        InflateRect(&rectFocus, -4, -4);
+
+        DrawFocusRect(hdc, &rectFocus);
+    }
+
+    if ( pushed )
+    {
+        // the label is shifted by 1 pixel to create "pushed" effect
+        OffsetRect(&rectBtn, 1, 1);
+    }
+
+    DrawButtonText(hdc, &rectBtn, GetLabel(),
+                   state & ODS_DISABLED ? GetSysColor(COLOR_GRAYTEXT)
+                                        : colFg);
+
+    ::DeleteObject(hbrushBackground);
+
+    return TRUE;
+}
+
+#endif // __WIN32__
+
+#endif // wxUSE_BUTTON