3.3.11 IMG_isPNG

int IMG_isPNG(SDL_RWops *src)

src

If the PNG format is supported, then the image data is tested to see if it is readable as a PNG, otherwise it returns false (Zero).

Returns: 1 if the image is a PNG and the PNG format support is compiled into SDL_image. 0 is returned otherwise.

// Test sample.png to see if it is a PNG SDL_RWops *rwop; rwop=SDL_RWFromFile("sample.png", "rb"); if(IMG_isPNG(rwop)) printf("sample.png is a PNG file.\n"); else printf("sample.png is not a PNG file, or PNG support is not available.\n");

See Also:
3.2.14 IMG_LoadPNG_RW, 3.2.3 IMG_LoadTyped_RW