BitBlt 使用 C++ 反转颜色

Question

我正在使用 BitBlt WinAPI 使用 C++ 组合位图，我想知道我需要使用哪些标志来反转其中的颜色？

Answer 1

You can use BitBlt() with NOTSRCCOPY .

Here is your code:

HDC hdc = GetDC(HWND_DESKTOP);
BitBlt(hdc, 0, 0, GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN), hdc, NULL, NULL, NOTSRCCOPY);

Answer 2

What did you try?

BitBlt :

• DSTINVERT Inverts the destination rectangle.
• PATINVERT Combines the colors of the brush currently selected in hdcDest, with the colors of the destination rectangle by using the Boolean XOR operator.
• SRCINVERT Combines the colors of the source and destination rectangles by using the Boolean XOR operator.