gdi 绘制图像

bitmap.cpp

Gdiplus::Bitmap* gdiplus_bitmap = Gdiplus::Bitmap::FromFile(headImagePath_.c_str());
bool bOk = (gdiplus_bitmap && Gdiplus::Ok == gdiplus_bitmap->GetLastStatus());
if (!bOk) {
	return false;
}

HBITMAP hBmp;
if (Gdiplus::Ok != gdiplus_bitmap->GetHBITMAP(Gdiplus::Color::White, &hBmp))
{
	return false;
}
BITMAP bmp = {0};
int result = ::GetObject(hBmp, sizeof(bmp), &bmp);
if (result != sizeof(bmp))
{
	return false;
}

BITMAPINFO bmpinfo = {0};
bmpinfo.bmiHeader.biSize = sizeof(BITMAPINFO);
bmpinfo.bmiHeader.biWidth = bmp.bmWidth;
bmpinfo.bmiHeader.biHeight = bmp.bmHeight;
bmpinfo.bmiHeader.biBitCount = bmp.bmBitsPixel;
bmpinfo.bmiHeader.biCompression = BI_RGB;
bmpinfo.bmiHeader.biPlanes = bmp.bmPlanes;
::SetStretchBltMode(hdc, HALFTONE);
return bmp.bmHeight == ::StretchDIBits(hdc, kBrowserHeadWidgetLeft, kBrowserHeadWidgetTop, kBrowserHeadWidgetWidth, 
	kBrowserHeadWidgetHeight, 0, 0, gdiplus_bitmap->GetWidth(),  gdiplus_bitmap->GetHeight(), bmp.bmBits, &bmpinfo, 
	DIB_RGB_COLORS, SRCCOPY);