fixed typo in previous commit which, instead of fixing the bug in wxSizerflags::Align...

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

diff --git a/src/msw/button.cpp b/src/msw/button.cpp
index 4e113f40a17bfce8d2eb83a38fd1048bc67d112f..5cbf9002c2d019e8f9e3e451a41809734caf73a7 100644 (file)
--- a/src/msw/button.cpp
+++ b/src/msw/button.cpp
@@ -1,12 +1,12 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// 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

 /////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 /////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================


@@ -16,9 +16,6 @@
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------

-#ifdef __GNUG__
-    #pragma implementation "button.h"
-#endif

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


@@ -27,7 +24,10 @@
     #pragma hdrstop
 #endif
 
     #pragma hdrstop
 #endif
 

+#if wxUSE_BUTTON
+

 #ifndef WX_PRECOMP
 #ifndef WX_PRECOMP

+    #include "wx/app.h"

     #include "wx/button.h"
     #include "wx/brush.h"
     #include "wx/panel.h"
     #include "wx/button.h"
     #include "wx/brush.h"
     #include "wx/panel.h"


@@ -36,14 +36,73 @@
     #include "wx/dcscreen.h"
 #endif
 
     #include "wx/dcscreen.h"
 #endif
 

+#include "wx/stockitem.h"
+#include "wx/tokenzr.h"

 #include "wx/msw/private.h"
 
 // ----------------------------------------------------------------------------
 // macros
 // ----------------------------------------------------------------------------
 
 #include "wx/msw/private.h"
 
 // ----------------------------------------------------------------------------
 // macros
 // ----------------------------------------------------------------------------
 

-#if !USE_SHARED_LIBRARY
-    IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
+#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  , EMPTY_MACROVALUE, 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 , EMPTY_MACROVALUE , 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
 
 // this macro tries to adjust the default button height to a reasonable value
 #endif
 
 // this macro tries to adjust the default button height to a reasonable value


@@ -60,68 +119,91 @@
 
 bool wxButton::Create(wxWindow *parent,
                       wxWindowID id,
 
 bool wxButton::Create(wxWindow *parent,
                       wxWindowID id,

-                      const wxString& label,
+                      const wxString& lbl,

                       const wxPoint& pos,
                       const wxSize& size,
                       long style,
                       const wxValidator& validator,
                       const wxString& name)
 {
                       const wxPoint& pos,
                       const wxSize& size,
                       long style,
                       const wxValidator& validator,
                       const wxString& name)
 {

-    if ( !CreateBase(parent, id, pos, size, style, validator, name) )
-        return FALSE;
-
-    parent->AddChild((wxButton *)this);
-
-    m_backgroundColour = parent->GetBackgroundColour() ;
-    m_foregroundColour = parent->GetForegroundColour() ;
-
-    m_hWnd = (WXHWND)CreateWindowEx
-                     (
-                      MakeExtendedStyle(m_windowStyle),
-                      wxT("BUTTON"),
-                      label,
-                      WS_VISIBLE | WS_TABSTOP | WS_CHILD,
-                      0, 0, 0, 0,
-                      GetWinHwnd(parent),
-                      (HMENU)m_windowId,
-                      wxGetInstance(),
-                      NULL
-                     );
-
-    // Subclass again for purposes of dialog editing mode
-    SubclassWin(m_hWnd);
-
-    SetFont(parent->GetFont());
-
-    SetSize(pos.x, pos.y, size.x, size.y);
-
-    // bad hack added by Robert to make buttons at least
-    // 80 pixels wide. There are probably better ways...
-    // TODO. FIXME.
-    wxSize nsize( GetSize() );
-    if ((nsize.x < 80) || (nsize.y < 23))
+    wxString label(lbl);
+    if (label.empty() && wxIsStockID(id))
+    {
+        // On Windows, some buttons aren't supposed to have
+        // mnemonics, so strip them out.
+        
+        label = wxGetStockLabel(id 
+#if defined(__WXMSW__) || defined(__WXWINCE__)
+                                        , ( id != wxID_OK &&
+                                            id != wxID_CANCEL &&
+                                            id != wxID_CLOSE )
+#endif
+                                );
+     }
+    
+    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 )

     {
     {

-        if ((size.x == -1) && (nsize.x < 80))
-            nsize.x = 80;
-        if ((size.y == -1) && (nsize.y < 23))
-            nsize.y = 23;
-        SetSize( nsize );
+        msStyle |= BS_MULTILINE;

     }
     }

+#endif // __WIN32__

 
 

-    return TRUE;
+    return MSWCreateControl(_T("BUTTON"), msStyle, pos, size, label, exstyle);

 }
 
 wxButton::~wxButton()
 {
 }
 
 wxButton::~wxButton()
 {

-    wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
-    if ( panel )
-    {
-        if ( panel->GetDefaultItem() == this )
-        {
-            // don't leave the panel with invalid default item
-            panel->SetDefaultItem(NULL);
-        }
-    }
+}
+
+// ----------------------------------------------------------------------------
+// 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;

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -130,31 +212,45 @@ wxButton::~wxButton()
 
 wxSize wxButton::DoGetBestSize() const
 {
 
 wxSize wxButton::DoGetBestSize() const
 {

-    wxString label = wxGetWindowText(GetHWND());
-    int wBtn;
-    GetTextExtent(label, &wBtn, NULL);
+    wxClientDC dc(wx_const_cast(wxButton *, this));
+    dc.SetFont(GetFont());

 
 

-    int wChar, hChar;
-    wxGetCharSize(GetHWND(), &wChar, &hChar, &GetFont());
+    wxCoord wBtn,
+            hBtn;
+    dc.GetMultiLineTextExtent(GetLabel(), &wBtn, &hBtn);

 
 

-    // add a margin - the button is wider than just its label
-    wBtn += 3*wChar;
+    // add a margin -- the button is wider than just its label
+    wBtn += 3*GetCharWidth();
+    hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hBtn);

 
 

-    // the button height is proportional to the height of the font used
-    int hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar);
+    // 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;

 
 

-    return wxSize(wBtn, hBtn);
+        return sz;
+    }
+
+    wxSize best(wBtn, hBtn);
+    CacheBestSize(best);
+    return best;

 }
 
 /* static */
 }
 
 /* static */

-wxSize wxButton::GetDefaultSize()
+wxSize wxButtonBase::GetDefaultSize()

 {
     static wxSize s_sizeBtn;
 
     if ( s_sizeBtn.x == 0 )
     {
         wxScreenDC dc;
 {
     static wxSize s_sizeBtn;
 
     if ( s_sizeBtn.x == 0 )
     {
         wxScreenDC dc;

-        dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+        dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));

 
         // the size of a standard button in the dialog units is 50x14,
         // translate this to pixels
 
         // the size of a standard button in the dialog units is 50x14,
         // translate this to pixels


@@ -172,39 +268,140 @@ wxSize wxButton::GetDefaultSize()
 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------

-// set this button as the default one in its panel
+// default button handling

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

+/*
+   "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 wxWidgets 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();
 void wxButton::SetDefault()
 {
     wxWindow *parent = GetParent();

-    wxButton *btnOldDefault = NULL;
-    wxPanel *panel = wxDynamicCast(parent, wxPanel);
-    if ( panel )
-    {
-        btnOldDefault = panel->GetDefaultItem();
-        panel->SetDefaultItem(this);
-    }

 
 

-    if ( parent )
+    wxCHECK_RET( parent, _T("button without parent?") );
+
+    // set this one as the default button both for wxWidgets ...
+    wxWindow *winOldDefault = parent->SetDefaultItem(this);
+
+    // ... and Windows
+    SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false);
+    SetDefaultStyle(this, true);
+}
+
+// set this button as being currently default
+void wxButton::SetTmpDefault()
+{
+    wxWindow *parent = GetParent();
+
+    wxCHECK_RET( parent, _T("button without parent?") );
+
+    wxWindow *winOldDefault = parent->GetDefaultItem();
+    parent->SetTmpDefaultItem(this);
+
+    SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false);
+    SetDefaultStyle(this, true);
+}
+
+// unset this button as currently default, it may still stay permanent default
+void wxButton::UnsetTmpDefault()
+{
+    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);
+}
+
+/* static */
+void
+wxButton::SetDefaultStyle(wxButton *btn, bool on)
+{
+    // 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 )

     {
     {

-        SendMessage(GetWinHwnd(parent), DM_SETDEFID, m_windowId, 0L);
+        // 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
+        }

     }
 
     }
 

-    // this doesn't work with bitmap buttons because it also removes the
-    // "ownerdrawn" style...
-    if ( btnOldDefault && !wxDynamicCast(btnOldDefault, wxBitmapButton) )
+    // then also change the style as needed
+    long style = ::GetWindowLong(GetHwndOf(btn), GWL_STYLE);
+    if ( !(style & BS_DEFPUSHBUTTON) == on )

     {
     {

-        // remove the BS_DEFPUSHBUTTON style from the other button
-        long style = GetWindowLong(GetHwndOf(btnOldDefault), GWL_STYLE);
-        style &= ~BS_DEFPUSHBUTTON;
-        SendMessage(GetHwndOf(btnOldDefault), BM_SETSTYLE, style, 1L);
+        // 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();
+        }

     }
     }

-
-    // set this button as the default
-    long style = GetWindowLong(GetHwnd(), GWL_STYLE);
-    style |= BS_DEFPUSHBUTTON;
-    SendMessage(GetHwnd(), BM_SETSTYLE, style, 1L);
+    //else: already has correct style

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -228,13 +425,23 @@ void wxButton::Command(wxCommandEvent & event)
 // event/message handlers
 // ----------------------------------------------------------------------------
 
 // event/message handlers
 // ----------------------------------------------------------------------------
 

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

 {
 {

-    bool processed = FALSE;
+    bool processed = false;

     switch ( param )
     {
     switch ( param )
     {

-        case 1: // means that the message came from an accelerator
-        case BN_CLICKED:
+        // 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 EVT_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;
     }
             processed = SendClickEvent();
             break;
     }


@@ -242,51 +449,283 @@ bool wxButton::MSWCommand(WXUINT param, WXWORD id)
     return processed;
 }
 
     return processed;
 }
 

-WXHBRUSH wxButton::OnCtlColor(WXHDC pDC,
-                              WXHWND pWnd,
-                              WXUINT nCtlColor,
-                              WXUINT message,
-                              WXWPARAM wParam,
-                              WXLPARAM lParam)
+WXLRESULT wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)

 {
 {

-    const HDC& hdc = (HDC)pDC;
+    // when we receive focus, we want to temporarily 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();

 
 

-    const wxColour& colBack = GetBackgroundColour();
-    ::SetBkColor(hdc, RGB(colBack.Red(), colBack.Green(), colBack.Blue()));
+        // 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);

 
 

-    const wxColour& colFor = GetForegroundColour();
-    ::SetTextColor(hdc, RGB(colFor.Red(), colFor.Green(), colFor.Blue()));
+        // and continue with processing the message normally as well
+    }

 
 

-    ::SetBkMode(hdc, OPAQUE);
+    // let the base class do all real processing
+    return wxControl::MSWWindowProc(nMsg, wParam, lParam);
+}
+
+// ----------------------------------------------------------------------------
+// owner-drawn buttons support
+// ----------------------------------------------------------------------------

 
 

-    wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(colBack,
-                                                                 wxSOLID);
-    backgroundBrush->RealizeResource();
-    return (WXHBRUSH)backgroundBrush->GetResourceHandle();
+#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);
+
+    if ( text.find(_T('\n')) != wxString::npos )
+    {
+        // draw multiline label
+
+        // first we need to compute its bounding rect
+        RECT rc;
+        ::CopyRect(&rc, pRect);
+        ::DrawText(hdc, text, text.length(), &rc, DT_CENTER | DT_CALCRECT);
+
+        // now center this rect inside the entire button area
+        const LONG w = rc.right - rc.left;
+        const LONG h = rc.bottom - rc.top;
+        rc.left = (pRect->right - pRect->left)/2 - w/2;
+        rc.right = rc.left+w;
+        rc.top = (pRect->bottom - pRect->top)/2 - h/2;
+        rc.bottom = rc.top+h;
+
+        ::DrawText(hdc, text, text.length(), &rc, DT_CENTER);
+    }
+    else // single line label
+    {
+        // 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);
+    }

 }
 
 }
 

-long wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+bool wxButton::SetBackgroundColour(const wxColour &colour)

 {
 {

-    // make sure that we won't have BS_DEFPUSHBUTTON style any more if the
-    // focus is being transfered to another button with the same parent -
-    // otherwise, we could finish with 2 default buttons inside one panel
-    if ( (nMsg == WM_KILLFOCUS) &&
-         (GetWindowLong(GetHwnd(), GWL_STYLE) & BS_DEFPUSHBUTTON) )
+    if ( !wxControl::SetBackgroundColour(colour) )

     {
     {

-        wxWindow *parent = GetParent();
-        wxWindow *win = wxFindWinFromHandle((WXHWND)wParam);
-        if ( win && win->GetParent() == parent )
+        // nothing to do
+        return false;
+    }
+
+    MakeOwnerDrawn();
+
+    Refresh();
+
+    return true;
+}
+
+bool wxButton::SetForegroundColour(const wxColour &colour)
+{
+    if ( !wxControl::SetForegroundColour(colour) )
+    {
+        // nothing to do
+        return false;
+    }
+
+    MakeOwnerDrawn();
+
+    Refresh();
+
+    return true;
+}
+
+/*
+   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)
+{
+    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 )

         {
         {

-            wxPanel *panel = wxDynamicCast(parent, wxPanel);
-            if ( panel )
-            {
-                panel->SetDefaultItem(this);
-            }
-            // else: I don't know what to do - we'll still have the problem
-            //       with multiple default buttons in a dialog...
+            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);

     }
 
     }
 

-    // let the base class do all real processing
-    return wxControl::MSWWindowProc(nMsg, wParam, lParam);
+    (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
+