Sortix volatile manual

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SDL_WasInit(3)

SDL API Reference

SDL_WasInit(3)

NAME

SDL_WasInit - Check which subsystems are initialized

SYNOPSIS

#include "SDL.h"

Uint32 SDL_WasInit(Uint32 flags);

DESCRIPTION

SDL_WasInit allows you to see which SDL subsytems have been initialized. flags is a bitwise OR'd combination of the subsystems you wish to check (see SDL_Init for a list of subsystem flags).

RETURN VALUE

SDL_WasInit returns a bitwised OR'd combination of the initialized subsystems.

EXAMPLES

/* Here are several ways you can use SDL_WasInit() */

/* Get init data on all the subsystems */
Uint32 subsystem_init;

subsystem_init=SDL_WasInit(SDL_INIT_EVERYTHING);

if(subsystem_init&SDL_INIT_VIDEO)
printf("Video is initialized.
");
else
printf("Video is not initialized.
");

/* Just check for one specfic subsystem */

if(SDL_WasInit(SDL_INIT_VIDEO)!=0)
printf("Video is initialized.
");
else
printf("Video is not initialized.
");

/* Check for two subsystems */

Uint32 subsystem_mask=SDL_INIT_VIDEO|SDL_INIT_AUDIO;

if(SDL_WasInit(subsystem_mask)==subsystem_mask)
printf("Video and Audio initialized.
");
else
printf("Video and Audio not initialized.
");