adjust the rectangle before calling DrawThemeBackground() (patch 1158282)

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

diff --git a/src/msw/dib.cpp b/src/msw/dib.cpp
index 285fd9142e72074743bc68fa28ce79bb68ea347c..a76592f9b06a65be056fe0f6292bbb6cc2a2fb28 100644 (file)
--- a/src/msw/dib.cpp
+++ b/src/msw/dib.cpp
@@ -69,7 +69,7 @@ static inline WORD GetNumberOfColours(WORD bitsPerPixel)
 {
     // only 1, 4 and 8bpp bitmaps use palettes (well, they could be used with
     // 24bpp ones too but we don't support this as I think it's quite uncommon)
-    return bitsPerPixel <= 8 ? 1 << bitsPerPixel : 0;
+    return (WORD)(bitsPerPixel <= 8 ? 1 << bitsPerPixel : 0);
 }
 
 // wrapper around ::GetObject() for DIB sections
@@ -118,7 +118,7 @@ bool wxDIB::Create(int width, int height, int depth)
     info->bmiHeader.biHeight = height;
 
     info->bmiHeader.biPlanes = 1;
-    info->bmiHeader.biBitCount = depth;
+    info->bmiHeader.biBitCount = (WORD)depth;
     info->bmiHeader.biSizeImage = GetLineSize(width, depth)*height;
 
     m_handle = ::CreateDIBSection
@@ -603,7 +603,7 @@ wxPalette *wxDIB::CreatePalette() const
 
     // initialize the palette header
     pPalette->palVersion = 0x300;  // magic number, not in docs but works
-    pPalette->palNumEntries = biClrUsed;
+    pPalette->palNumEntries = (WORD)biClrUsed;
 
     // and the colour table (it starts right after the end of the header)
     const RGBQUAD *pRGB = (RGBQUAD *)((char *)&ds.dsBmih + ds.dsBmih.biSize);
@@ -674,9 +674,9 @@ bool wxDIB::Create(const wxImage& image)
                 // RGB order is reversed, and we need to premultiply
                 // all channels by alpha value for use with ::AlphaBlend.
                 const unsigned char a = *alpha++;
-                *dst++ = (src[2] * a + 127) / 255;
-                *dst++ = (src[1] * a + 127) / 255;
-                *dst++ = (src[0] * a + 127) / 255;
+                *dst++ = (unsigned char)((src[2] * a + 127) / 255);
+                *dst++ = (unsigned char)((src[1] * a + 127) / 255);
+                *dst++ = (unsigned char)((src[0] * a + 127) / 255);
                 *dst++ = a;
                 src += 3;
             }