SDL_CDStatus.3
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上传日期:2007-02-02
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文件大小:1k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- .TH "SDL_CDStatus" "3" "Tue 11 Sep 2001, 22:58" "SDL" "SDL API Reference"
- .SH "NAME"
- SDL_CDStatus- Returns the current status of the given drive&.
- .SH "SYNOPSIS"
- .PP
- fB#include "SDL&.h"
- .sp
- fBCDstatus fBSDL_CDStatusfPfR(fBSDL_CD *cdromfR);
- fB/* Given a status, returns true if there&'s a disk in the drive */
- #define CD_INDRIVE(status) ((int)status > 0)
- .SH "DESCRIPTION"
- .PP
- This function returns the current status of the given drive&. Status is described like so:
- .PP
- .nf
- f(CWtypedef enum {
- CD_TRAYEMPTY,
- CD_STOPPED,
- CD_PLAYING,
- CD_PAUSED,
- CD_ERROR = -1
- } CDstatus;fR
- .fi
- .PP
- .PP
- If the drive has a CD in it, the table of contents of the CD and current play position of the CD will be stored in the SDL_CD structure&.
- .PP
- The macro fBCD_INDRIVEfP is provided for convenience, and given a status returns true if there&'s a disk in the drive&.
- .PP
- .RS
- fBNote:
- .PP
- fBSDL_CDStatusfP also updates the fIfBSDL_CDfRfR structure passed to it&.
- .RE
- .SH "EXAMPLE"
- .PP
- .nf
- f(CWint playTrack(int track)
- {
- int playing = 0;
- if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) {
- /* clamp to the actual number of tracks on the CD */
- if (track >= cdrom->numtracks) {
- track = cdrom->numtracks-1;
- }
- if ( SDL_CDPlayTracks(cdrom, track, 0, 1, 0) == 0 ) {
- playing = 1;
- }
- }
- return playing;
- }fR
- .fi
- .PP
- .SH "SEE ALSO"
- .PP
- fIfBSDL_CDfPfR
- ..." created by instant / docbook-to-man, Tue 11 Sep 2001, 22:58