Tries to fix wxListBox focus problems.

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

diff --git a/src/msw/choice.cpp b/src/msw/choice.cpp
index 41e23a5ece2874932622de928d43335a8f1d0a6c..6c9206a7960773f5a61ec7fbdb0955408f6fa968 100644 (file)
--- a/src/msw/choice.cpp
+++ b/src/msw/choice.cpp
@@ -28,6 +28,8 @@
     #pragma hdrstop
 #endif
 
+#if wxUSE_CHOICE
+
 #ifndef WX_PRECOMP
     #include "wx/choice.h"
     #include "wx/utils.h"
@@ -38,7 +40,7 @@
 
 #include "wx/msw/private.h"
 
-    IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
+IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
 
 // ============================================================================
 // implementation
@@ -254,6 +256,24 @@ wxClientData* wxChoice::DoGetItemClientObject( int n ) const
 // wxMSW specific helpers
 // ----------------------------------------------------------------------------
 
+void wxChoice::DoMoveWindow(int x, int y, int width, int height)
+{
+    // here is why this is necessary: if the width is negative, the combobox
+    // window proc makes the window of the size width*height instead of
+    // interpreting height in the usual manner (meaning the height of the drop
+    // down list - usually the height specified in the call to MoveWindow()
+    // will not change the height of combo box per se)
+    //
+    // this behaviour is not documented anywhere, but this is just how it is
+    // here (NT 4.4) and, anyhow, the check shouldn't hurt - however without
+    // the check, constraints/sizers using combos may break the height
+    // constraint will have not at all the same value as expected
+    if ( width < 0 )
+        return;
+
+    wxControl::DoMoveWindow(x, y, width, height);
+}
+
 void wxChoice::DoSetSize(int x, int y,
                          int width, int WXUNUSED(height),
                          int sizeFlags)
@@ -381,4 +401,4 @@ WXHBRUSH wxChoice::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(
     return (WXHBRUSH)brush->GetResourceHandle();
 }
 
-
+#endif // wxUSE_CHOICE