Avoid an assert when m_dir is empty

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

diff --git a/src/msw/control.cpp b/src/msw/control.cpp
index 24a4e37f2c4bc20c13d2057137d4e99314696d91..0d937c901693da522a0c4d9933bcd6c388336a18 100644 (file)
--- a/src/msw/control.cpp
+++ b/src/msw/control.cpp
@@ -59,15 +59,6 @@ IMPLEMENT_ABSTRACT_CLASS(wxControl, wxWindow)
 // wxControl implementation
 // ============================================================================
 
-// ----------------------------------------------------------------------------
-// wxControl ctor/dtor
-// ----------------------------------------------------------------------------
-
-wxControl::~wxControl()
-{
-    m_isBeingDeleted = true;
-}
-
 // ----------------------------------------------------------------------------
 // control window creation
 // ----------------------------------------------------------------------------
@@ -152,17 +143,29 @@ bool wxControl::MSWCreateControl(const wxChar *classname,
 
     if ( !m_hWnd )
     {
-#ifdef __WXDEBUG__
         wxLogLastError(wxString::Format
                        (
-                        _T("CreateWindowEx(\"%s\", flags=%08lx, ex=%08lx)"),
+                        wxT("CreateWindowEx(\"%s\", flags=%08lx, ex=%08lx)"),
                         classname, style, exstyle
                        ));
-#endif // __WXDEBUG__
 
         return false;
     }
 
+#if !wxUSE_UNICODE
+    // Text labels starting with the character 0xff (which is a valid character
+    // in many code pages) don't appear correctly as CreateWindowEx() has some
+    // special treatment for this case, apparently the strings starting with -1
+    // are not really strings but something called "ordinals". There is no
+    // documentation about it but the fact is that the label gets mangled or
+    // not displayed at all if we don't do this, see #9572.
+    //
+    // 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());
+#endif // !wxUSE_UNICODE
+
     // saving the label in m_labelOrig to return it verbatim
     // later in GetLabel()
     m_labelOrig = label;
@@ -240,6 +243,9 @@ WXDWORD wxControl::MSWGetStyle(long style, WXDWORD *exstyle) const
 
 wxSize wxControl::DoGetBestSize() const
 {
+    if (m_windowSizer)
+       return wxControlBase::DoGetBestSize();
+
     return wxSize(DEFAULT_ITEM_WIDTH, DEFAULT_ITEM_HEIGHT);
 }
 
@@ -297,18 +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
 // ----------------------------------------------------------------------------
@@ -369,15 +363,12 @@ 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);
+        if ( wxWindow *win = wxFindWinFromHandle(hWnd) )
+            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
@@ -386,37 +377,47 @@ 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,
-                                                           wxBRUSHSTYLE_SOLID);
+        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;
 }
 
 WXHBRUSH wxControl::MSWControlColor(WXHDC pDC, WXHWND hWnd)
 {
-    wxColour colBg;
-
     if ( HasTransparentBackground() )
         ::SetBkMode((HDC)pDC, TRANSPARENT);
-    else // if the control is opaque it shouldn't use the parents background
-        colBg = GetBackgroundColour();
 
-    return DoMSWControlColor(pDC, colBg, hWnd);
+    // don't pass any background colour to DoMSWControlColor(), our own
+    // background colour will be used by it only if it is set, otherwise the
+    // defaults will be used
+    return DoMSWControlColor(pDC, wxColour(), hWnd);
 }
 
 WXHBRUSH wxControl::MSWControlColorDisabled(WXHDC pDC)