docs/man3/SDL_WasInit.3
author Sam Lantinga <slouken@libsdl.org>
Wed, 08 Mar 2006 18:30:12 +0000
changeset 1486 9d77fc9d0ace
parent 181 e5bc29de3f0a
child 2283 546f7c1eb755
permissions -rw-r--r--
Re-added C runtime support for Visual C++ 5,6
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.TH "SDL_WasInit" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" 
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.SH "NAME"
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SDL_WasInit\- Check which subsystems are initialized
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.SH "SYNOPSIS"
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.PP
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\fB#include "SDL\&.h"
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.sp
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\fBUint32 \fBSDL_WasInit\fP\fR(\fBUint32 flags\fR);
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.SH "DESCRIPTION"
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.PP
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\fBSDL_WasInit\fP allows you to see which SDL subsytems have been \fIinitialized\fR\&. \fBflags\fR is a bitwise OR\&'d combination of the subsystems you wish to check (see \fI\fBSDL_Init\fP\fR for a list of subsystem flags)\&.
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.SH "RETURN VALUE"
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.PP
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\fBSDL_WasInit\fP returns a bitwised OR\&'d combination of the initialized subsystems\&.
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.SH "EXAMPLES"
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.PP
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.nf
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\f(CW
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/* Here are several ways you can use SDL_WasInit() */
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/* Get init data on all the subsystems */
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Uint32 subsystem_init;
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subsystem_init=SDL_WasInit(SDL_INIT_EVERYTHING);
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if(subsystem_init&SDL_INIT_VIDEO)
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  printf("Video is initialized\&.
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");
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else
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  printf("Video is not initialized\&.
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");
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/* Just check for one specfic subsystem */
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if(SDL_WasInit(SDL_INIT_VIDEO)!=0)
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  printf("Video is initialized\&.
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");
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else
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  printf("Video is not initialized\&.
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");
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/* Check for two subsystems */
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Uint32 subsystem_mask=SDL_INIT_VIDEO|SDL_INIT_AUDIO;
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if(SDL_WasInit(subsystem_mask)==subsystem_mask)
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  printf("Video and Audio initialized\&.
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");
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else
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  printf("Video and Audio not initialized\&.
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");
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\fR
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.fi
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.PP
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.SH "SEE ALSO"
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.PP
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\fI\fBSDL_Init\fP\fR, \fI\fBSDL_Subsystem\fP\fR
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...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00