Mercurial > sdl-ios-xcode
view docs/man3/SDL_WasInit.3 @ 1030:6b8f0543337c
Date: Sat, 15 Jan 2005 15:06:01 -0600
From: Tyler Montbriand
Subject: [SDL] minor bugfix for test/testoverlay2.c
Programs that use malloc ought to #include <stdlib.h> . On 32-bit systems you
can get away with not including it, but on 64-bit systems it will assume
malloc() returns a 32-bit integer and butcher the 64-bit pointers it returns.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 18 Jan 2005 18:32:10 +0000 |
parents | e5bc29de3f0a |
children | 546f7c1eb755 |
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.TH "SDL_WasInit" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" .SH "NAME" SDL_WasInit\- Check which subsystems are initialized .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBUint32 \fBSDL_WasInit\fP\fR(\fBUint32 flags\fR); .SH "DESCRIPTION" .PP \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)\&. .SH "RETURN VALUE" .PP \fBSDL_WasInit\fP returns a bitwised OR\&'d combination of the initialized subsystems\&. .SH "EXAMPLES" .PP .nf \f(CW /* 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\&. "); \fR .fi .PP .SH "SEE ALSO" .PP \fI\fBSDL_Init\fP\fR, \fI\fBSDL_Subsystem\fP\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00