reset virtual root to NULL in DeleteAllItems()

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

diff --git a/src/msw/dcclient.cpp b/src/msw/dcclient.cpp
index 1cee9d8212d28daef8553011f74bbb334effaed4..687253ddc8cbae3de9807e72144b826e00828295 100644 (file)
--- a/src/msw/dcclient.cpp
+++ b/src/msw/dcclient.cpp
@@ -64,7 +64,7 @@ WX_DEFINE_OBJARRAY(wxArrayDCInfo);
 
 IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
-IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxWindowDC)
+IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
 
 // ----------------------------------------------------------------------------
 // global variables
@@ -102,7 +102,6 @@ wxWindowDC::wxWindowDC(wxWindow *canvas)
 
     // m_bOwnsDC was already set to false in the base class ctor, so the DC
     // will be released (and not deleted) in ~wxDC
-
     InitDC();
 }
 
@@ -114,6 +113,18 @@ void wxWindowDC::InitDC()
 
     // default bg colour is pne of the window
     SetBackground(wxBrush(m_canvas->GetBackgroundColour(), wxSOLID));
+
+    // since we are a window dc we need to grab the palette from the window
+#if wxUSE_PALETTE
+    InitializePalette();
+#endif
+}
+
+void wxWindowDC::DoGetSize(int *width, int *height) const
+{
+    wxCHECK_RET( m_canvas, _T("wxWindowDC without a window?") );
+
+    m_canvas->GetSize(width, height);
 }
 
 // ----------------------------------------------------------------------------
@@ -138,6 +149,36 @@ wxClientDC::wxClientDC(wxWindow *canvas)
     InitDC();
 }
 
+void wxClientDC::InitDC()
+{
+    wxWindowDC::InitDC();
+
+    // in wxUniv build we must manually do some DC adjustments usually
+    // performed by Windows for us
+#ifdef __WXUNIVERSAL__
+    wxPoint ptOrigin = m_canvas->GetClientAreaOrigin();
+    if ( ptOrigin.x || ptOrigin.y )
+    {
+        // no need to shift DC origin if shift is null
+        SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
+    }
+
+    // clip the DC to avoid overwriting the non client area
+    SetClippingRegion(wxPoint(0, 0), m_canvas->GetClientSize());
+#endif // __WXUNIVERSAL__
+}
+
+wxClientDC::~wxClientDC()
+{
+}
+
+void wxClientDC::DoGetSize(int *width, int *height) const
+{
+    wxCHECK_RET( m_canvas, _T("wxClientDC without a window?") );
+
+    m_canvas->GetClientSize(width, height);
+}
+
 // ----------------------------------------------------------------------------
 // wxPaintDC
 // ----------------------------------------------------------------------------
@@ -190,10 +231,14 @@ wxPaintDC::wxPaintDC(wxWindow *canvas)
     else // not in cache, create a new one
     {
         m_hDC = (WXHDC)::BeginPaint(GetHwndOf(m_canvas), &g_paintStruct);
-        ms_cache.Add(new wxPaintDCInfo(m_canvas, this));
+       if (m_hDC)
+            ms_cache.Add(new wxPaintDCInfo(m_canvas, this));
     }
 
-    InitDC();
+    // (re)set the DC parameters.
+    // Note: at this point m_hDC can be NULL under MicroWindows, when dragging.
+    if (GetHDC())
+        InitDC();
 }
 
 wxPaintDC::~wxPaintDC()
@@ -211,7 +256,7 @@ wxPaintDC::~wxPaintDC()
         {
             ::EndPaint(GetHwndOf(m_canvas), &g_paintStruct);
 
-            ms_cache.Remove(index);
+            ms_cache.RemoveAt(index);
 
             // Reduce the number of bogus reports of non-freed memory
             // at app exit
@@ -231,9 +276,10 @@ wxPaintDCInfo *wxPaintDC::FindInCache(size_t *index) const
     size_t nCache = ms_cache.GetCount();
     for ( size_t n = 0; n < nCache; n++ )
     {
-        info = &ms_cache[n];
-        if ( info->hwnd == m_canvas->GetHWND() )
+        wxPaintDCInfo *info1 = &ms_cache[n];
+        if ( info1->hwnd == m_canvas->GetHWND() )
         {
+            info = info1;
             if ( index )
                 *index = n;
             break;