Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_WasInit.3 @ 2938:2929ed239d2a
Adjusted default choice of audio driver.
If a driver can definitely see available devices, it is chosen. Otherwise,
we'll take the first driver that initializes but saw no devices...this might
be because it can't enumerate them, or there really aren't any available.
This prevents the dsp driver from hogging control when there are no /dev/dsp*
nodes (for example, on a Linux box with ALSA and no OSS emulation).
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Thu, 01 Jan 2009 07:54:58 +0000 |
| parents | 546f7c1eb755 |
| children | 1238da4a7112 |
| rev | line source |
|---|---|
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
1 .TH "SDL_WasInit" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
|
2283
546f7c1eb755
Merged revision 3472 from SDL 1.2, fixing bug #493
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
3 SDL_WasInit \- Check which subsystems are initialized |
| 0 | 4 .SH "SYNOPSIS" |
| 5 .PP | |
| 6 \fB#include "SDL\&.h" | |
| 7 .sp | |
| 8 \fBUint32 \fBSDL_WasInit\fP\fR(\fBUint32 flags\fR); | |
| 9 .SH "DESCRIPTION" | |
| 10 .PP | |
| 11 \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)\&. | |
| 12 .SH "RETURN VALUE" | |
| 13 .PP | |
| 14 \fBSDL_WasInit\fP returns a bitwised OR\&'d combination of the initialized subsystems\&. | |
| 15 .SH "EXAMPLES" | |
| 16 .PP | |
| 17 .nf | |
| 18 \f(CW | |
| 19 /* Here are several ways you can use SDL_WasInit() */ | |
| 20 | |
| 21 /* Get init data on all the subsystems */ | |
| 22 Uint32 subsystem_init; | |
| 23 | |
| 24 subsystem_init=SDL_WasInit(SDL_INIT_EVERYTHING); | |
| 25 | |
| 26 if(subsystem_init&SDL_INIT_VIDEO) | |
| 27 printf("Video is initialized\&. | |
| 28 "); | |
| 29 else | |
| 30 printf("Video is not initialized\&. | |
| 31 "); | |
| 32 | |
| 33 | |
| 34 | |
| 35 /* Just check for one specfic subsystem */ | |
| 36 | |
| 37 if(SDL_WasInit(SDL_INIT_VIDEO)!=0) | |
| 38 printf("Video is initialized\&. | |
| 39 "); | |
| 40 else | |
| 41 printf("Video is not initialized\&. | |
| 42 "); | |
| 43 | |
| 44 | |
| 45 | |
| 46 | |
| 47 /* Check for two subsystems */ | |
| 48 | |
| 49 Uint32 subsystem_mask=SDL_INIT_VIDEO|SDL_INIT_AUDIO; | |
| 50 | |
| 51 if(SDL_WasInit(subsystem_mask)==subsystem_mask) | |
| 52 printf("Video and Audio initialized\&. | |
| 53 "); | |
| 54 else | |
| 55 printf("Video and Audio not initialized\&. | |
| 56 "); | |
| 57 \fR | |
| 58 .fi | |
| 59 .PP | |
| 60 .SH "SEE ALSO" | |
| 61 .PP | |
| 62 \fI\fBSDL_Init\fP\fR, \fI\fBSDL_Subsystem\fP\fR | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
63 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00 |