Любопытно. На всякий случай скопипастю сюда пример.
| Код |
//Static handles for image cache
static HDC hDCI = NULL;
static HBITMAP hImage = NULL;
static RECT rcImage = {0, 0, LINKS_WIDTH, LINKS_HEIGHT};
//Function to load png a place it into DC containing 32-bit DIB
void InitializeImage()
{
IImagingFactory *pFactory = NULL;
IImage *pImage = NULL;
BITMAPINFO bInfo;
if(CoCreateInstance(CLSID_ImagingFactory, NULL, CLSCTX_INPROC_SERVER, IID_IImagingFactory, (void**)&pFactory) == S_OK)
{
if(pFactory->CreateImageFromFile(L"\\Program Files\\OzzY\\Links.png", &pImage) == S_OK)
{
ZeroMemory(&bInfo.bmiColors, 4);
bInfo.bmiHeader.biClrImportant = bInfo.bmiHeader.biClrUsed = 0;
bInfo.bmiHeader.biBitCount = 32;
bInfo.bmiHeader.biCompression = BI_RGB;
bInfo.bmiHeader.biXPelsPerMeter = bInfo.bmiHeader.biYPelsPerMeter = 3780;
bInfo.bmiHeader.biSizeImage = 0;
bInfo.bmiHeader.biHeight = LINKS_HEIGHT;
bInfo.bmiHeader.biWidth = LINKS_WIDTH;
bInfo.bmiHeader.biPlanes = 1;
bInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
hDCI = CreateCompatibleDC(NULL);
hImage = CreateDIBSection(hDCI, &bInfo, DIB_RGB_COLORS, NULL, NULL, NULL);
SelectObject(hDCI, hImage);
pImage->Draw(hDCI, &rcImage, NULL);
pImage->Release();
}
pFactory->Release();
}
}
//The way I do the painting, on today screen
PAINTSTRUCT ps;
HDC hDC = BeginPaint(hwnd, &ps);
BLENDFUNCTION bfAlpha = {AC_SRC_OVER, 0, 0xFF, AC_SRC_ALPHA};
SetBkMode(hDC, TRANSPARENT);
AlphaBlend(hDC, 0, 0, LINKS_WIDTH, LINKS_HEIGHT, hDCI, 0, 0, LINKS_WIDTH, LINKS_HEIGHT, bfAlpha);
EndPaint(hwnd, &ps);
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Добавлено через 2 минуты и 26 секунд
Цитата(t_rex @ 30.10.2009, 23:31  ) | | и работает побыстрее GDI. |
В чем именно? В выводе текста? Или в рисовании толстых линий? |
, буду разбираться.