Ensure there is valid context for DrawRectangle

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

diff --git a/src/msw/control.cpp b/src/msw/control.cpp
index cab5151e1cf0bdf551ff4e71d1c7986b9c1748cc..6fe928cc5772aa3ae4e935eb04851e90c73f8a41 100644 (file)
--- a/src/msw/control.cpp
+++ b/src/msw/control.cpp
@@ -132,7 +132,7 @@ bool wxControl::MSWCreateControl(const wxChar *classname,
                        (
                         exstyle,            // extended style
                         classname,          // the kind of control to create
-                        label.wx_str(),     // the window name
+                        label.t_str(),      // the window name
                         style,              // the window style
                         x, y, w, h,         // the window position and size
                         GetHwndOf(GetParent()),         // parent
@@ -163,7 +163,7 @@ bool wxControl::MSWCreateControl(const wxChar *classname,
     // Notice that 0xffff is not a valid Unicode character so the problem
     // doesn't arise in Unicode build.
     if ( !label.empty() && label[0] == -1 )
-        ::SetWindowText(GetHwnd(), label.wx_str());
+        ::SetWindowText(GetHwnd(), label.t_str());
 #endif // !wxUSE_UNICODE
 
     // saving the label in m_labelOrig to return it verbatim
@@ -303,18 +303,6 @@ wxControl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
     return attrs;
 }
 
-// another version for the "composite", i.e. non simple controls
-/* static */ wxVisualAttributes
-wxControl::GetCompositeControlsDefaultAttributes(wxWindowVariant WXUNUSED(variant))
-{
-    wxVisualAttributes attrs;
-    attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
-    attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
-    attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
-
-    return attrs;
-}
-
 // ----------------------------------------------------------------------------
 // message handling
 // ----------------------------------------------------------------------------
@@ -375,15 +363,28 @@ bool wxControl::MSWOnNotify(int idCtrl,
 WXHBRUSH wxControl::DoMSWControlColor(WXHDC pDC, wxColour colBg, WXHWND hWnd)
 {
     HDC hdc = (HDC)pDC;
-    if ( m_hasFgCol )
-    {
-        ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
-    }
 
     WXHBRUSH hbr = 0;
-    if ( !colBg.Ok() )
+    if ( !colBg.IsOk() )
     {
-        hbr = MSWGetBgBrush(pDC, hWnd);
+        wxWindow *win = wxFindWinFromHandle( hWnd );
+        if ( !win )
+        {
+            // If this HWND doesn't correspond to a wxWindow, it still might be
+            // one of its children for which we need to set the background
+            // brush, e.g. this is the case for the EDIT control that is part
+            // of wxComboBox. Check for this by asking the parent if it has it:
+            HWND parent = ::GetParent(hWnd);
+            if ( parent )
+            {
+                wxWindow *winParent = wxFindWinFromHandle( parent );
+                if( winParent && winParent->ContainsHWND( hWnd ) )
+                    win = winParent;
+             }
+        }
+
+        if ( win )
+            hbr = win->MSWGetBgBrush(pDC);
 
         // if the control doesn't have any bg colour, foreground colour will be
         // ignored as the return value would be 0 -- so forcefully give it a
@@ -392,22 +393,34 @@ WXHBRUSH wxControl::DoMSWControlColor(WXHDC pDC, wxColour colBg, WXHWND hWnd)
             colBg = GetBackgroundColour();
     }
 
-    // use the background colour override if a valid colour is given
-    if ( colBg.Ok() )
+    // use the background colour override if a valid colour is given: this is
+    // used when the control is disabled to grey it out and also if colBg was
+    // set just above
+    if ( colBg.IsOk() )
     {
-        ::SetBkColor(hdc, wxColourToRGB(colBg));
-
-        // draw children with the same colour as the parent
         wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBg);
         hbr = (WXHBRUSH)brush->GetResourceHandle();
     }
 
-    // if we use custom background, we should set foreground ourselves too
-    if ( hbr && !m_hasFgCol )
+    // always set the foreground colour if we changed the background, whether
+    // m_hasFgCol is true or not: if it true, we must do it, of course, but
+    // even if it isn't, we must set the default foreground explicitly as by
+    // default just the simple black is used
+    if ( hbr )
+    {
+        ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
+    }
+
+    // finally also set the background colour for text drawing: without this,
+    // the text in an edit control is drawn using the default background even
+    // if we return a valid brush
+    if ( colBg.IsOk() || m_hasBgCol )
     {
-        ::SetTextColor(hdc, ::GetSysColor(COLOR_WINDOWTEXT));
+        if ( !colBg.IsOk() )
+            colBg = GetBackgroundColour();
+
+        ::SetBkColor(hdc, wxColourToRGB(colBg));
     }
-    //else: already set above
 
     return hbr;
 }
@@ -456,7 +469,7 @@ int wxControlWithItems::MSWInsertOrAppendItem(unsigned pos,
                                               unsigned wm)
 {
     LRESULT n = SendMessage((HWND)MSWGetItemsHWND(), wm, pos,
-                            (LPARAM)item.wx_str());
+                            wxMSW_CONV_LPARAM(item));
     if ( n == CB_ERR || n == CB_ERRSPACE )
     {
         wxLogLastError(wxT("SendMessage(XX_ADD/INSERTSTRING)"));