3.3.4 IMG_isPNM

int IMG_isPNM(SDL_RWops *src)

src

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

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

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

See Also:
3.2.7 IMG_LoadPNM_RW, 3.2.3 IMG_LoadTyped_RW