SDL draw PNG image from raw image data string

问题

I've setup a PNG resource file in my SDL2 project for Windows 32bit in C++.

HRSRC hRes = FindResource(0, MAKEINTRESOURCE(IMGID), "PNG");
if (!hRes) {
    Log::Error("Find resource IMGID");
    return;
}

HGLOBAL hData = LoadResource(0, hRes);
if (!hData) {
    Log::Error("Load resource IMGID");
    return;
}

DWORD dataSize = SizeofResource(0, hRes);
char* data = (char*)LockResource(hData);

std::string result;
result.assign(data, dataSize);

The result variable contains all the characters of the PNG image (if it was converted to a string).

How can I use this image string with SDL Image and display it on the window?

回答1:

Use SDL_RWFromConstMem(data, dataSize) to create a read-only memory-targeted SDL_RWops and pass that in to IMG_Load_RW().

来源：https://stackoverflow.com/questions/46136794/sdl-draw-png-image-from-raw-image-data-string