Read from a data source.
size_t SDL_RWread(SDL_RWops *context, void *ptr, size_t size, size_t maxnum);
|context||a pointer to an SDL_RWops structure|
|ptr||a pointer to a buffer to read data into|
|size||the size of each object to read, in bytes|
|maxnum||the maximum number of objects to be read|
Returns the number of objects read, or 0 at error or end of file; call SDL_GetError() for more information.
This function reads up to
maxnum objects each of size
size from the data source to the area pointed at by
ptr. This function may read less objects than requested. It will return zero when there has been an error or the data stream is completely read.
SDL_RWread() is actually a function wrapper that calls the SDL_RWops's
read method appropriately, to simplify application development.
Prior to SDL 2.0.10, this function was a macro.
This function is available since SDL 2.0.10.