Fix for ambiguities which happen in STL=1 mode under DigitalMars C++.

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

diff --git a/src/msw/dc.cpp b/src/msw/dc.cpp
index 5a3bbdd0cbd52309c3a4e94160bc85c5f8a2cc81..df9046419a4cecf948aa8e72a295550f34948a12 100644 (file)
--- a/src/msw/dc.cpp
+++ b/src/msw/dc.cpp
@@ -41,9 +41,6 @@
     #include "wx/icon.h"
 #endif
 
-#include "wx/msw/private.h" // needs to be before #include <commdlg.h>
-#include "wx/msw/missing.h" // needs to be before #include <commdlg.h>
-
 #include "wx/sysopt.h"
 #include "wx/dcprint.h"
 #include "wx/module.h"
@@ -54,12 +51,8 @@
 #endif
 
 #include <string.h>
-#include <math.h>
-
-#if wxUSE_COMMON_DIALOGS && !defined(__WXMICROWIN__)
-    #include <commdlg.h>
-#endif
 
+#include "wx/msw/wrapcdlg.h"
 #ifndef __WIN32__
     #include <print.h>
 #endif
@@ -94,11 +87,6 @@ static const int VIEWPORT_EXTENT = 1000;
 static const int MM_POINTS = 9;
 static const int MM_METRIC = 10;
 
-// usually this is defined in math.h
-#ifndef M_PI
-    static const double M_PI = 3.14159265358979323846;
-#endif // M_PI
-
 // ROPs which don't have standard names (see "Ternary Raster Operations" in the
 // MSDN docs for how this and other numbers in wxDC::Blit() are obtained)
 #define DSTCOPY 0x00AA0029      // a.k.a. NOP operation
@@ -1911,8 +1899,11 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest,
 
     WXMICROWIN_CHECK_HDC_RET(false)
 
+    // if either the source or destination has alpha channel, we must use
+    // AlphaBlt() as other function don't handle it correctly
     const wxBitmap& bmpSrc = source->m_selectedBitmap;
-    if ( bmpSrc.Ok() && bmpSrc.HasAlpha() )
+    if ( bmpSrc.Ok() && (bmpSrc.HasAlpha() ||
+            (m_selectedBitmap.Ok() && m_selectedBitmap.HasAlpha())) )
     {
         if ( AlphaBlt(GetHdc(), xdest, ydest, width, height,
                       GetHdcOf(*source), bmpSrc) )
@@ -2230,7 +2221,7 @@ void wxDC::DoGetSizeMM(int *w, int *h) const
 
 wxSize wxDC::GetPPI() const
 {
-    WXMICROWIN_CHECK_HDC_RET(wxSize())
+    WXMICROWIN_CHECK_HDC_RET(wxSize(0,0))
 
     int x = ::GetDeviceCaps(GetHdc(), LOGPIXELSX);
     int y = ::GetDeviceCaps(GetHdc(), LOGPIXELSY);
@@ -2458,6 +2449,7 @@ static bool AlphaBlt(HDC hdcDst,
 #else // !wxHAVE_RAW_BITMAP
     // no wxAlphaBlend() neither, fall back to using simple BitBlt() (we lose
     // alpha but at least something will be shown like this)
+    wxUnusedVar(bmp);
     return false;
 #endif // wxHAVE_RAW_BITMAP
 }