fixed setfocus() flicker in listctrl

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

diff --git a/src/msw/window.cpp b/src/msw/window.cpp
index e266d6478e6bb076071156d496d0cd114fcfef6f..0df00e969648be80347192f913c745ce62ca4ab6 100644 (file)
--- a/src/msw/window.cpp
+++ b/src/msw/window.cpp
@@ -54,9 +54,8 @@
     #include "wx/ownerdrw.h"
 #endif
 
     #include "wx/ownerdrw.h"
 #endif
 

-#if     wxUSE_DRAG_AND_DROP
-    #include "wx/dataobj.h"
-    #include "wx/msw/ole/droptgt.h"
+#if wxUSE_DRAG_AND_DROP
+    #include "wx/dnd.h"

 #endif
 
 #include "wx/menuitem.h"
 #endif
 
 #include "wx/menuitem.h"


@@ -80,7 +79,7 @@
 
 #include <string.h>
 
 
 #include <string.h>
 

-#ifndef __GNUWIN32__
+#if !defined(__GNUWIN32__)|| defined(wxUSE_NORLANDER_HEADERS)

     #include <shellapi.h>
     #include <mmsystem.h>
 #endif
     #include <shellapi.h>
     #include <mmsystem.h>
 #endif


@@ -89,13 +88,15 @@
     #include <windowsx.h>
 #endif
 
     #include <windowsx.h>
 #endif
 

-#if ( defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__ )
+#if ( defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__ ) || defined(wxUSE_NORLANDER_HEADERS)

     #include <commctrl.h>
 #endif
 
 #ifndef __TWIN32__
     #ifdef __GNUWIN32__
     #include <commctrl.h>
 #endif
 
 #ifndef __TWIN32__
     #ifdef __GNUWIN32__

-        #include <wx/msw/gnuwin32/extra.h>
+        #ifndef wxUSE_NORLANDER_HEADERS
+            #include "wx/msw/gnuwin32/extra.h"
+        #endif

     #endif
 #endif
 
     #endif
 #endif
 


@@ -125,7 +126,7 @@ extern wxChar wxCanvasClassName[];
 // ---------------------------------------------------------------------------
 
 // the window proc for all our windows
 // ---------------------------------------------------------------------------
 
 // the window proc for all our windows

-LRESULT APIENTRY _EXPORT wxWndProc(HWND hWnd, UINT message,
+LRESULT WXDLLEXPORT APIENTRY _EXPORT wxWndProc(HWND hWnd, UINT message,

                                    WPARAM wParam, LPARAM lParam);
 
 #ifdef  __WXDEBUG__
                                    WPARAM wParam, LPARAM lParam);
 
 #ifdef  __WXDEBUG__


@@ -160,7 +161,7 @@ END_EVENT_TABLE()
 // ---------------------------------------------------------------------------
 
 // Find an item given the MS Windows id
 // ---------------------------------------------------------------------------
 
 // Find an item given the MS Windows id

-wxWindow *wxWindow::FindItem(int id) const
+wxWindow *wxWindow::FindItem(long id) const

 {
     wxWindowList::Node *current = GetChildren().GetFirst();
     while (current)
 {
     wxWindowList::Node *current = GetChildren().GetFirst();
     while (current)


@@ -295,7 +296,7 @@ bool wxWindow::Create(wxWindow *parent, wxWindowID id,
                       long style,
                       const wxString& name)
 {
                       long style,
                       const wxString& name)
 {

-    wxCHECK_MSG( parent, FALSE, _T("can't create wxWindow without parent") );
+    wxCHECK_MSG( parent, FALSE, wxT("can't create wxWindow without parent") );

 
     if ( !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name) )
         return FALSE;
 
     if ( !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name) )
         return FALSE;


@@ -371,6 +372,15 @@ bool wxWindow::Enable(bool enable)
     if ( hWnd )
         ::EnableWindow(hWnd, (BOOL)enable);
 
     if ( hWnd )
         ::EnableWindow(hWnd, (BOOL)enable);
 

+    wxWindowList::Node *node = GetChildren().GetFirst();
+    while ( node )
+    {
+        wxWindow *child = node->GetData();
+        child->Enable(enable);
+
+        node = node->GetNext();
+    }
+

     return TRUE;
 }
 
     return TRUE;
 }
 


@@ -446,7 +456,7 @@ bool wxWindow::SetFont(const wxFont& font)
     {
         WXHANDLE hFont = m_font.GetResourceHandle();
 
     {
         WXHANDLE hFont = m_font.GetResourceHandle();
 

-        wxASSERT_MSG( hFont, _T("should have valid font") );
+        wxASSERT_MSG( hFont, wxT("should have valid font") );

 
         ::SendMessage(hWnd, WM_SETFONT, (WPARAM)hFont, MAKELPARAM(TRUE, 0));
     }
 
         ::SendMessage(hWnd, WM_SETFONT, (WPARAM)hFont, MAKELPARAM(TRUE, 0));
     }


@@ -462,7 +472,7 @@ bool wxWindow::SetCursor(const wxCursor& cursor)
     }
 
     wxASSERT_MSG( m_cursor.Ok(),
     }
 
     wxASSERT_MSG( m_cursor.Ok(),

-                  _T("cursor must be valid after call to the base version"));
+                  wxT("cursor must be valid after call to the base version"));

 
     HWND hWnd = GetHwnd();
 
 
     HWND hWnd = GetHwnd();
 


@@ -799,10 +809,10 @@ void wxWindow::ScrollWindow(int dx, int dy, const wxRect *rect)
 
 void wxWindow::SubclassWin(WXHWND hWnd)
 {
 
 void wxWindow::SubclassWin(WXHWND hWnd)
 {

-    wxASSERT_MSG( !m_oldWndProc, _T("subclassing window twice?") );
+    wxASSERT_MSG( !m_oldWndProc, wxT("subclassing window twice?") );

 
     HWND hwnd = (HWND)hWnd;
 
     HWND hwnd = (HWND)hWnd;

-    wxCHECK_RET( ::IsWindow(hwnd), _T("invalid HWND in SubclassWin") );
+    wxCHECK_RET( ::IsWindow(hwnd), wxT("invalid HWND in SubclassWin") );

 
     wxAssociateWinWithHandle(hwnd, this);
 
 
     wxAssociateWinWithHandle(hwnd, this);
 


@@ -820,7 +830,7 @@ void wxWindow::UnsubclassWin()
     {
         m_hWnd = 0;
 
     {
         m_hWnd = 0;
 

-        wxCHECK_RET( ::IsWindow(hwnd), _T("invalid HWND in SubclassWin") );
+        wxCHECK_RET( ::IsWindow(hwnd), wxT("invalid HWND in UnsubclassWin") );

 
         FARPROC farProc = (FARPROC) GetWindowLong(hwnd, GWL_WNDPROC);
         if ( (m_oldWndProc != 0) && (farProc != (FARPROC) m_oldWndProc) )
 
         FARPROC farProc = (FARPROC) GetWindowLong(hwnd, GWL_WNDPROC);
         if ( (m_oldWndProc != 0) && (farProc != (FARPROC) m_oldWndProc) )


@@ -1115,12 +1125,9 @@ void wxWindow::DoGetPosition(int *x, int *y) const
 
         // We may be faking the client origin. So a window that's really at (0,
         // 30) may appear (to wxWin apps) to be at (0, 0).
 
         // We may be faking the client origin. So a window that's really at (0,
         // 30) may appear (to wxWin apps) to be at (0, 0).

-        if ( parent )
-        {
-            wxPoint pt(parent->GetClientAreaOrigin());
-            point.x -= pt.x;
-            point.y -= pt.y;
-        }
+        wxPoint pt(parent->GetClientAreaOrigin());
+        point.x -= pt.x;
+        point.y -= pt.y;

     }
 
     if ( x )
     }
 
     if ( x )


@@ -1175,6 +1182,14 @@ void wxWindow::DoGetClientSize(int *x, int *y) const
         *y = rect.bottom;
 }
 
         *y = rect.bottom;
 }
 

+void wxWindow::DoMoveWindow(int x, int y, int width, int height)
+{
+    if ( !::MoveWindow(GetHwnd(), x, y, width, height, TRUE) )
+    {
+        wxLogLastError("MoveWindow");
+    }
+}
+

 // set the size of the window: if the dimensions are positive, just use them,
 // but if any of them is equal to -1, it means that we must find the value for
 // it ourselves (unless sizeFlags contains wxSIZE_ALLOW_MINUS_ONE flag, in
 // set the size of the window: if the dimensions are positive, just use them,
 // but if any of them is equal to -1, it means that we must find the value for
 // it ourselves (unless sizeFlags contains wxSIZE_ALLOW_MINUS_ONE flag, in


@@ -1208,7 +1223,7 @@ void wxWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
     wxSize size(-1, -1);
     if ( width == -1 )
     {
     wxSize size(-1, -1);
     if ( width == -1 )
     {

-        if ( sizeFlags && wxSIZE_AUTO_WIDTH )
+        if ( sizeFlags & wxSIZE_AUTO_WIDTH )

         {
             size = DoGetBestSize();
             width = size.x;
         {
             size = DoGetBestSize();
             width = size.x;


@@ -1222,11 +1237,11 @@ void wxWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 
     if ( height == -1 )
     {
 
     if ( height == -1 )
     {

-        if ( sizeFlags && wxSIZE_AUTO_HEIGHT )
+        if ( sizeFlags & wxSIZE_AUTO_HEIGHT )

         {
             if ( size.x == -1 )
             {
         {
             if ( size.x == -1 )
             {

-                size= DoGetBestSize();
+                size = DoGetBestSize();

             }
             //else: already called DoGetBestSize() above
 
             }
             //else: already called DoGetBestSize() above
 


@@ -1239,16 +1254,7 @@ void wxWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
         }
     }
 
         }
     }
 

-    if ( !::MoveWindow(GetHwnd(), x, y, width, height, TRUE) )
-    {
-        wxLogLastError("MoveWindow");
-    }
-}
-
-// for a generic window there is no natural best size - just use the current one
-wxSize wxWindow::DoGetBestSize()
-{
-    return GetSize();
+    DoMoveWindow(x, y, width, height);

 }
 
 void wxWindow::DoSetClientSize(int width, int height)
 }
 
 void wxWindow::DoSetClientSize(int width, int height)


@@ -1282,7 +1288,7 @@ void wxWindow::DoSetClientSize(int width, int height)
         ::ScreenToClient(hParentWnd, &point);
     }
 
         ::ScreenToClient(hParentWnd, &point);
     }
 

-    MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)TRUE);
+    DoMoveWindow(point.x, point.y, actual_width, actual_height);

 
     wxSizeEvent event(wxSize(width, height), m_windowId);
     event.SetEventObject(this);
 
     wxSizeEvent event(wxSize(width, height), m_windowId);
     event.SetEventObject(this);


@@ -1372,10 +1378,14 @@ void wxWindow::GetTextExtent(const wxString& string,
 
     ReleaseDC(hWnd, dc);
 
 
     ReleaseDC(hWnd, dc);
 

-    if ( x ) *x = sizeRect.cx;
-    if ( y ) *y = sizeRect.cy;
-    if ( descent ) *descent = tm.tmDescent;
-    if ( externalLeading ) *externalLeading = tm.tmExternalLeading;
+    if ( x )
+        *x = sizeRect.cx;
+    if ( y )
+        *y = sizeRect.cy;
+    if ( descent )
+        *descent = tm.tmDescent;
+    if ( externalLeading )
+        *externalLeading = tm.tmExternalLeading;

 }
 
 #if wxUSE_CARET && WXWIN_COMPATIBILITY
 }
 
 #if wxUSE_CARET && WXWIN_COMPATIBILITY


@@ -1702,11 +1712,11 @@ void wxWindow::UnpackMenuSelect(WXWPARAM wParam, WXLPARAM lParam,
 wxWindow *wxWndHook = NULL;
 
 // Main window proc
 wxWindow *wxWndHook = NULL;
 
 // Main window proc

-LRESULT APIENTRY _EXPORT wxWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
+LRESULT WXDLLEXPORT APIENTRY _EXPORT wxWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)

 {
     // trace all messages - useful for the debugging
 #ifdef __WXDEBUG__
 {
     // trace all messages - useful for the debugging
 #ifdef __WXDEBUG__

-    wxLogTrace(wxTraceMessages, _T("Processing %s(wParam=%8lx, lParam=%8lx)"),
+    wxLogTrace(wxTraceMessages, wxT("Processing %s(wParam=%8lx, lParam=%8lx)"),

                wxGetMessageName(message), wParam, lParam);
 #endif // __WXDEBUG__
 
                wxGetMessageName(message), wParam, lParam);
 #endif // __WXDEBUG__
 


@@ -1716,6 +1726,12 @@ LRESULT APIENTRY _EXPORT wxWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARA
     // it with wxWindow stored in wxWndHook
     if ( !wnd && wxWndHook )
     {
     // it with wxWindow stored in wxWndHook
     if ( !wnd && wxWndHook )
     {

+#if 0 // def __WXDEBUG__
+        char buf[512];
+        ::GetClassNameA((HWND) hWnd, buf, 512);
+        wxString className(buf);
+#endif
+

         wxAssociateWinWithHandle(hWnd, wxWndHook);
         wnd = wxWndHook;
         wxWndHook = NULL;
         wxAssociateWinWithHandle(hWnd, wxWndHook);
         wnd = wxWndHook;
         wxWndHook = NULL;


@@ -1820,6 +1836,14 @@ long wxWindow::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
             break;
 
         case WM_MOUSEMOVE:
             break;
 
         case WM_MOUSEMOVE:

+           {
+                short x = LOWORD(lParam);
+                short y = HIWORD(lParam);
+
+                processed = HandleMouseMove(x, y, wParam);
+           }
+           break;
+

         case WM_LBUTTONDOWN:
         case WM_LBUTTONUP:
         case WM_LBUTTONDBLCLK:
         case WM_LBUTTONDOWN:
         case WM_LBUTTONUP:
         case WM_LBUTTONDBLCLK:


@@ -2085,7 +2109,7 @@ long wxWindow::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
     if ( !processed )
     {
 #ifdef __WXDEBUG__
     if ( !processed )
     {
 #ifdef __WXDEBUG__

-        wxLogTrace(wxTraceMessages, _T("Forwarding %s to DefWindowProc."),
+        wxLogTrace(wxTraceMessages, wxT("Forwarding %s to DefWindowProc."),

                    wxGetMessageName(message));
 #endif // __WXDEBUG__
         rc.result = MSWDefWindowProc(message, wParam, lParam);
                    wxGetMessageName(message));
 #endif // __WXDEBUG__
         rc.result = MSWDefWindowProc(message, wParam, lParam);


@@ -2121,19 +2145,44 @@ wxWindow *wxFindWinFromHandle(WXHWND hWnd)
     return (wxWindow *)node->Data();
 }
 
     return (wxWindow *)node->Data();
 }
 

+#if 0 // def __WXDEBUG__
+static int gs_AssociationCount = 0;
+#endif
+

 void wxAssociateWinWithHandle(HWND hWnd, wxWindow *win)
 {
     // adding NULL hWnd is (first) surely a result of an error and
     // (secondly) breaks menu command processing
     wxCHECK_RET( hWnd != (HWND)NULL,
 void wxAssociateWinWithHandle(HWND hWnd, wxWindow *win)
 {
     // adding NULL hWnd is (first) surely a result of an error and
     // (secondly) breaks menu command processing
     wxCHECK_RET( hWnd != (HWND)NULL,

-                 _T("attempt to add a NULL hWnd to window list ignored") );
+                 wxT("attempt to add a NULL hWnd to window list ignored") );
+
+
+    wxWindow *oldWin = wxFindWinFromHandle((WXHWND) hWnd);
+    if ( oldWin && (oldWin != win) )
+    {
+        wxString str(win->GetClassInfo()->GetClassName());
+        wxLogError("Bug! Found existing HWND %X for new window of class %s", (int) hWnd, (const char*) str);
+    }
+    else if (!oldWin)
+    {
+#if 0 // def __WXDEBUG__
+        gs_AssociationCount ++;
+        wxLogDebug("+ Association %d", gs_AssociationCount);
+#endif

 
 

-    if ( !wxWinHandleList->Find((long)hWnd) )

         wxWinHandleList->Append((long)hWnd, win);
         wxWinHandleList->Append((long)hWnd, win);

+    }

 }
 
 void wxRemoveHandleAssociation(wxWindow *win)
 {
 }
 
 void wxRemoveHandleAssociation(wxWindow *win)
 {

+#if 0 // def __WXDEBUG__
+    if (wxWinHandleList->Member(win))
+    {
+        wxLogDebug("- Association %d", gs_AssociationCount);
+        gs_AssociationCount --;
+    }
+#endif

     wxWinHandleList->DeleteObject(win);
 }
 
     wxWinHandleList->DeleteObject(win);
 }
 


@@ -2157,12 +2206,12 @@ void wxWindow::MSWDetachWindowMenu()
             int chars = GetMenuString(hMenu, i, buf, 100, MF_BYPOSITION);
             if ( !chars )
             {
             int chars = GetMenuString(hMenu, i, buf, 100, MF_BYPOSITION);
             if ( !chars )
             {

-                wxLogLastError(_T("GetMenuString"));
+                wxLogLastError(wxT("GetMenuString"));

 
                 continue;
             }
 
 
                 continue;
             }
 

-            if ( wxStrcmp(buf, _T("&Window")) == 0 )
+            if ( wxStrcmp(buf, wxT("&Window")) == 0 )

             {
                 RemoveMenu(hMenu, i, MF_BYPOSITION);
 
             {
                 RemoveMenu(hMenu, i, MF_BYPOSITION);
 


@@ -2206,11 +2255,7 @@ bool wxWindow::MSWCreate(int id,
     if ( width > -1 ) width1 = width;
     if ( height > -1 ) height1 = height;
 
     if ( width > -1 ) width1 = width;
     if ( height > -1 ) height1 = height;
 

-#ifdef __WXWINE__

     HWND hParent = (HWND)NULL;
     HWND hParent = (HWND)NULL;

-#else
-    HWND hParent = NULL;
-#endif

     if ( parent )
         hParent = (HWND) parent->GetHWND();
 
     if ( parent )
         hParent = (HWND) parent->GetHWND();
 


@@ -2238,14 +2283,14 @@ bool wxWindow::MSWCreate(int id,
             if ( !::SetWindowPos(GetHwnd(), HWND_TOPMOST, 0, 0, 0, 0,
                                  SWP_NOSIZE | SWP_NOMOVE) )
             {
             if ( !::SetWindowPos(GetHwnd(), HWND_TOPMOST, 0, 0, 0, 0,
                                  SWP_NOSIZE | SWP_NOMOVE) )
             {

-                wxLogLastError(_T("SetWindowPos"));
+                wxLogLastError(wxT("SetWindowPos"));

             }
         }
 
         // move the dialog to its initial position without forcing repainting
         if ( !::MoveWindow(GetHwnd(), x1, y1, width1, height1, FALSE) )
         {
             }
         }
 
         // move the dialog to its initial position without forcing repainting
         if ( !::MoveWindow(GetHwnd(), x1, y1, width1, height1, FALSE) )
         {

-            wxLogLastError(_T("MoveWindow"));
+            wxLogLastError(wxT("MoveWindow"));

         }
     }
     else
         }
     }
     else


@@ -2257,12 +2302,12 @@ bool wxWindow::MSWCreate(int id,
         wxString className(wclass);
         if ( GetWindowStyleFlag() & wxNO_FULL_REPAINT_ON_RESIZE )
         {
         wxString className(wclass);
         if ( GetWindowStyleFlag() & wxNO_FULL_REPAINT_ON_RESIZE )
         {

-            className += _T("NR");
+            className += wxT("NR");

         }
 
         m_hWnd = (WXHWND)CreateWindowEx(extendedStyle,
         }
 
         m_hWnd = (WXHWND)CreateWindowEx(extendedStyle,

-                                        wclass,
-                                        title ? title : _T(""),
+                                        className,
+                                        title ? title : wxT(""),

                                         style,
                                         x1, y1,
                                         width1, height1,
                                         style,
                                         x1, y1,
                                         width1, height1,


@@ -2281,7 +2326,18 @@ bool wxWindow::MSWCreate(int id,
     }
 
     wxWndHook = NULL;
     }
 
     wxWndHook = NULL;

-    wxWinHandleList->Append((long)m_hWnd, this);
+#ifdef __WXDEBUG__
+    wxNode* node = wxWinHandleList->Member(this);
+    if (node)
+    {
+        HWND hWnd = (HWND) node->GetKeyInteger();
+        if (hWnd != (HWND) m_hWnd)
+        {
+            wxLogError("A second HWND association is being added for the same window!");
+        }
+    }
+#endif
+    wxAssociateWinWithHandle((HWND) m_hWnd, this);

 
     return TRUE;
 }
 
     return TRUE;
 }


@@ -2333,7 +2389,7 @@ bool wxWindow::MSWOnNotify(int WXUNUSED(idCtrl),
 {
 #if wxUSE_TOOLTIPS
     NMHDR* hdr = (NMHDR *)lParam;
 {
 #if wxUSE_TOOLTIPS
     NMHDR* hdr = (NMHDR *)lParam;

-    if ( hdr->code == TTN_NEEDTEXT && m_tooltip )
+    if ( (int)hdr->code == TTN_NEEDTEXT && m_tooltip )

     {
         TOOLTIPTEXT *ttt = (TOOLTIPTEXT *)lParam;
         ttt->lpszText = (wxChar *)m_tooltip->GetTip().c_str();
     {
         TOOLTIPTEXT *ttt = (TOOLTIPTEXT *)lParam;
         ttt->lpszText = (wxChar *)m_tooltip->GetTip().c_str();


@@ -2356,7 +2412,7 @@ bool wxWindow::HandleQueryEndSession(long logOff, bool *mayEnd)
     wxCloseEvent event(wxEVT_QUERY_END_SESSION, -1);
     event.SetEventObject(wxTheApp);
     event.SetCanVeto(TRUE);
     wxCloseEvent event(wxEVT_QUERY_END_SESSION, -1);
     event.SetEventObject(wxTheApp);
     event.SetCanVeto(TRUE);

-    event.SetLoggingOff(logOff == ENDSESSION_LOGOFF);
+    event.SetLoggingOff(logOff == (long)ENDSESSION_LOGOFF);

 
     bool rc = wxTheApp->ProcessEvent(event);
 
 
     bool rc = wxTheApp->ProcessEvent(event);
 


@@ -2379,7 +2435,7 @@ bool wxWindow::HandleEndSession(bool endSession, long logOff)
     wxCloseEvent event(wxEVT_END_SESSION, -1);
     event.SetEventObject(wxTheApp);
     event.SetCanVeto(FALSE);
     wxCloseEvent event(wxEVT_END_SESSION, -1);
     event.SetEventObject(wxTheApp);
     event.SetCanVeto(FALSE);

-    event.SetLoggingOff( (logOff == ENDSESSION_LOGOFF) );
+    event.SetLoggingOff( (logOff == (long)ENDSESSION_LOGOFF) );

     if ( (this == wxTheApp->GetTopWindow()) && // Only send once
         wxTheApp->ProcessEvent(event))
     {
     if ( (this == wxTheApp->GetTopWindow()) && // Only send once
         wxTheApp->ProcessEvent(event))
     {


@@ -3226,7 +3282,7 @@ bool wxWindow::HandleJoystickEvent(WXUINT msg, int x, int y, WXUINT flags)
             break;
 
         default:
             break;
 
         default:

-            wxFAIL_MSG(_T("no such joystick event"));
+            wxFAIL_MSG(wxT("no such joystick event"));

 
             return FALSE;
     }
 
             return FALSE;
     }


@@ -3299,7 +3355,7 @@ bool wxWindow::MSWOnScroll(int orientation, WXWORD wParam,
 // global functions
 // ===========================================================================
 
 // global functions
 // ===========================================================================
 

-void wxGetCharSize(WXHWND wnd, int *x, int *y,wxFont *the_font)
+void wxGetCharSize(WXHWND wnd, int *x, int *y, const wxFont *the_font)

 {
     TEXTMETRIC tm;
     HDC dc = ::GetDC((HWND) wnd);
 {
     TEXTMETRIC tm;
     HDC dc = ::GetDC((HWND) wnd);


@@ -3309,7 +3365,7 @@ void wxGetCharSize(WXHWND wnd, int *x, int *y,wxFont *the_font)
     {
         //    the_font->UseResource();
         //    the_font->RealizeResource();
     {
         //    the_font->UseResource();
         //    the_font->RealizeResource();

-        fnt = (HFONT)the_font->GetResourceHandle();
+        fnt = (HFONT)((wxFont *)the_font)->GetResourceHandle(); // const_cast

         if ( fnt )
             was = (HFONT) SelectObject(dc,fnt);
     }
         if ( fnt )
             was = (HFONT) SelectObject(dc,fnt);
     }


@@ -3319,8 +3375,11 @@ void wxGetCharSize(WXHWND wnd, int *x, int *y,wxFont *the_font)
         SelectObject(dc,was);
     }
     ReleaseDC((HWND)wnd, dc);
         SelectObject(dc,was);
     }
     ReleaseDC((HWND)wnd, dc);

-    *x = tm.tmAveCharWidth;
-    *y = tm.tmHeight + tm.tmExternalLeading;
+
+    if ( x )
+        *x = tm.tmAveCharWidth;
+    if ( y )
+        *y = tm.tmHeight + tm.tmExternalLeading;

 
     //  if ( the_font )
     //    the_font->ReleaseResource();
 
     //  if ( the_font )
     //    the_font->ReleaseResource();


@@ -3507,17 +3566,22 @@ void wxSetKeyboardHook(bool doIt)
     {
         wxTheKeyboardHookProc = MakeProcInstance((FARPROC) wxKeyboardHook, wxGetInstance());
         wxTheKeyboardHook = SetWindowsHookEx(WH_KEYBOARD, (HOOKPROC) wxTheKeyboardHookProc, wxGetInstance(),
     {
         wxTheKeyboardHookProc = MakeProcInstance((FARPROC) wxKeyboardHook, wxGetInstance());
         wxTheKeyboardHook = SetWindowsHookEx(WH_KEYBOARD, (HOOKPROC) wxTheKeyboardHookProc, wxGetInstance(),

+

 #if defined(__WIN32__) && !defined(__TWIN32__)
             GetCurrentThreadId());
         //      (DWORD)GetCurrentProcess()); // This is another possibility. Which is right?
 #else
 #if defined(__WIN32__) && !defined(__TWIN32__)
             GetCurrentThreadId());
         //      (DWORD)GetCurrentProcess()); // This is another possibility. Which is right?
 #else

-        GetCurrentTask());
+            GetCurrentTask());

 #endif
     }
     else
     {
         UnhookWindowsHookEx(wxTheKeyboardHook);
 #endif
     }
     else
     {
         UnhookWindowsHookEx(wxTheKeyboardHook);

+        // avoids mingw warning about statement with no effect (FreeProcInstance
+        // doesn't do anything under Win32)
+#ifndef __GNUWIN32__

         FreeProcInstance(wxTheKeyboardHookProc);
         FreeProcInstance(wxTheKeyboardHookProc);

+#endif

     }
 }
 
     }
 }