compilation warning fixed

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

diff --git a/src/generic/scrlwing.cpp b/src/generic/scrlwing.cpp
index 00af1964171b418e792223b4c14dd09e18950918..b19d93d85b57860fa5e4571a2fb6f9abaa19428a 100644 (file)
--- a/src/generic/scrlwing.cpp
+++ b/src/generic/scrlwing.cpp
@@ -40,6 +40,7 @@
 #include "wx/scrolwin.h"
 #include "wx/panel.h"
 #include "wx/timer.h"
+#include "wx/sizer.h"
 
 #ifdef __WXMSW__
     #include <windows.h> // for DLGC_WANTARROWS
@@ -392,34 +393,14 @@ void wxScrollHelper::DeleteEvtHandler()
     // search for m_handler in the handler list
     if ( m_win && m_handler )
     {
-        wxEvtHandler *handlerPrev = NULL,
-                     *handler = m_win->GetEventHandler();
-        while ( handler )
+        if ( m_win->RemoveEventHandler(m_handler) )
         {
-            if ( handler == m_handler )
-            {
-                wxEvtHandler *handlerNext = handler->GetNextHandler();
-                if ( handlerPrev )
-                {
-                    handlerPrev->SetNextHandler(handlerNext);
-                }
-                else
-                {
-                    m_win->SetEventHandler(handlerNext);
-                }
-
-                handler->SetNextHandler(NULL);
-                delete handler;
-                m_handler = NULL;
-
-                return;
-            }
-
-            handlerPrev = handler;
-            handler = handler->GetNextHandler();
+            delete m_handler;
         }
+        //else: something is very wrong, so better [maybe] leak memory than
+        //      risk a crash because of double deletion
 
-        wxFAIL_MSG( _T("where has our event handler gone?") );
+        m_handler = NULL;
     }
 }
 
@@ -833,7 +814,7 @@ void wxScrollHelper::GetViewStart (int *x, int *y) const
         *y = m_yScrollPosition;
 }
 
-void wxScrollHelper::CalcScrolledPosition(int x, int y, int *xx, int *yy) const
+void wxScrollHelper::DoCalcScrolledPosition(int x, int y, int *xx, int *yy) const
 {
     if ( xx )
         *xx = x - m_xScrollPosition * m_xScrollPixelsPerLine;
@@ -841,7 +822,7 @@ void wxScrollHelper::CalcScrolledPosition(int x, int y, int *xx, int *yy) const
         *yy = y - m_yScrollPosition * m_yScrollPixelsPerLine;
 }
 
-void wxScrollHelper::CalcUnscrolledPosition(int x, int y, int *xx, int *yy) const
+void wxScrollHelper::DoCalcUnscrolledPosition(int x, int y, int *xx, int *yy) const
 {
     if ( xx )
         *xx = x + m_xScrollPosition * m_xScrollPixelsPerLine;
@@ -856,11 +837,6 @@ void wxScrollHelper::CalcUnscrolledPosition(int x, int y, int *xx, int *yy) cons
 // Default OnSize resets scrollbars, if any
 void wxScrollHelper::HandleOnSize(wxSizeEvent& WXUNUSED(event))
 {
-#if wxUSE_CONSTRAINTS
-    if ( m_win->GetAutoLayout() )
-        m_win->Layout();
-#endif
-
     AdjustScrollbars();
 }
 
@@ -1122,11 +1098,6 @@ bool wxGenericScrolledWindow::Create(wxWindow *parent,
 
     bool ok = wxPanel::Create(parent, id, pos, size, style, name);
 
-#ifdef __WXMSW__
-    // we need to process arrows ourselves for scrolling
-    m_lDlgCode |= DLGC_WANTARROWS;
-#endif // __WXMSW__
-
     return ok;
 }
 
@@ -1134,6 +1105,22 @@ wxGenericScrolledWindow::~wxGenericScrolledWindow()
 {
 }
 
+bool wxGenericScrolledWindow::Layout()
+{
+    if (GetSizer())
+    {
+        // Take into account the virtual size and scrolled position of the window
+        int x, y, w, h;
+        CalcScrolledPosition(0,0, &x,&y);
+        GetVirtualSize(&w, &h);
+        GetSizer()->SetDimension(x, y, w, h);
+        return TRUE;
+    }
+
+    // fall back to default for LayoutConstraints
+    return wxPanel::Layout();
+}
+
 void wxGenericScrolledWindow::OnPaint(wxPaintEvent& event)
 {
     // the user code didn't really draw the window if we got here, so set this
@@ -1143,6 +1130,25 @@ void wxGenericScrolledWindow::OnPaint(wxPaintEvent& event)
     event.Skip();
 }
 
+#ifdef __WXMSW__
+long
+wxGenericScrolledWindow::MSWWindowProc(WXUINT nMsg,
+                                       WXWPARAM wParam,
+                                       WXLPARAM lParam)
+{
+    long rc = wxPanel::MSWWindowProc(nMsg, wParam, lParam);
+
+    // we need to process arrows ourselves for scrolling
+    if ( nMsg == WM_GETDLGCODE )
+    {
+        rc |= DLGC_WANTARROWS;
+    }
+
+    return rc;
+}
+
+#endif // __WXMSW__
+
 #if WXWIN_COMPATIBILITY
 
 void wxGenericScrolledWindow::GetScrollUnitsPerPage (int *x_page, int *y_page) const