Mercurial > sdl-ios-xcode
view docs/man3/SDL_WasInit.3 @ 1905:36d52b1f0504
Prefer the D3D renderer over GDI, at least for testing.
Added support for the SDL_VIDEO_RENDERER environment variable to pick the desired render driver.
Implemented WritePixels support for the D3D renderer.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Fri, 14 Jul 2006 08:22:45 +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