Ensure there is valid context for DrawRectangle

[wxWidgets.git] / src / generic / laywin.cpp

diff --git a/src/generic/laywin.cpp b/src/generic/laywin.cpp
index 997670245937ad8ac92d9267cb7a1de271904dbc..51b66201894cad6a2aa7792faeada2c9ac183630 100644 (file)
--- a/src/generic/laywin.cpp
+++ b/src/generic/laywin.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        laywin.cpp
+// Name:        src/generic/laywin.cpp
 // Purpose:     Implements a simple layout algorithm, plus
 //              wxSashLayoutWindow which is an example of a window with
 //              layout-awareness (via event handlers). This is suited to
@@ -21,20 +21,25 @@
 
 #ifndef WX_PRECOMP
     #include "wx/frame.h"
-    #include "wx/mdi.h"
 #endif
 
 #include "wx/laywin.h"
+#include "wx/mdi.h"
+
 
 IMPLEMENT_DYNAMIC_CLASS(wxQueryLayoutInfoEvent, wxEvent)
 IMPLEMENT_DYNAMIC_CLASS(wxCalculateLayoutEvent, wxEvent)
 
-wxDEFINE_EVENT( wxEVT_QUERY_LAYOUT_INFO, wxQueryLayoutInfoEvent )
-wxDEFINE_EVENT( wxEVT_CALCULATE_LAYOUT, wxCalculateLayoutEvent )
+wxDEFINE_EVENT( wxEVT_QUERY_LAYOUT_INFO, wxQueryLayoutInfoEvent );
+wxDEFINE_EVENT( wxEVT_CALCULATE_LAYOUT, wxCalculateLayoutEvent );
+
+
+// ----------------------------------------------------------------------------
+// wxSashLayoutWindow
+// ----------------------------------------------------------------------------
 
 #if wxUSE_SASH
 IMPLEMENT_CLASS(wxSashLayoutWindow, wxSashWindow)
-
 BEGIN_EVENT_TABLE(wxSashLayoutWindow, wxSashWindow)
     EVT_CALCULATE_LAYOUT(wxSashLayoutWindow::OnCalculateLayout)
     EVT_QUERY_LAYOUT_INFO(wxSashLayoutWindow::OnQueryLayoutInfo)
@@ -174,9 +179,10 @@ void wxSashLayoutWindow::OnCalculateLayout(wxCalculateLayoutEvent& event)
 }
 #endif // wxUSE_SASH
 
-/*
- * wxLayoutAlgorithm
- */
+
+// ----------------------------------------------------------------------------
+// wxLayoutAlgorithm
+// ----------------------------------------------------------------------------
 
 #if wxUSE_MDI_ARCHITECTURE
 
@@ -232,7 +238,7 @@ bool wxLayoutAlgorithm::LayoutWindow(wxWindow* parent, wxWindow* mainWindow)
 
     int leftMargin = 0, rightMargin = 0, topMargin = 0, bottomMargin = 0;
 #if wxUSE_SASH
-    if (parent->IsKindOf(CLASSINFO(wxSashWindow)))
+    if (wxDynamicCast(parent, wxSashWindow))
     {
         wxSashWindow* sashWindow = (wxSashWindow*) parent;