Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_CDOpen.3 @ 1584:b786d9c15e42
Fixed bug #61
Date: Mon, 24 Feb 2003 13:35:11 +0800
From: "Leonidas"
Subject: [SDL] Re: Trigger mouse wheel event -- not in X-environment
I have looked into the codes for the IMPS/2 mouse wheel mode of fbcon driver.
But I found something weird.
Here's the original codes to set a mouse device into IMPS/2 mode in libSDL.
In the file src/video/fbcon/SDL_fbevents.c
In function static int set_imps2_mode(int fd)
...
Uint8 set_imps2[] = {0xf3, 200, 0xf3, 100, 0xf3, 80};
Uint8 reset = 0xff;
fd_set fdset;
struct timeval tv;
int retval = 0;
// Set mouse device fd into IMPS/2 mode
if ( write(fd, &set_imps2, sizeof(set_imps2)) == sizeof(set_imps2) ) {
// ??? then RESET it..???
if (write(fd, &reset, sizeof (reset)) == sizeof (reset) ) {
retval = 1;
}
}
...........
Since it sets IMPS/2 mode then reset it, so you will never get a mouse into
IMPS/2 mode to use its wheel.
What I did to make the wheel usable is remove the RESET codes.
....
if ( write(fd, &set_imps2, sizeof(set_imps2)) == sizeof(set_imps2) ) {
/*
if (write(fd, &reset, sizeof (reset)) == sizeof (reset) ) {
}
*/
retval = 1;
}
....
And in FB_OpenMouse(_THIS)
Make the device /dev/psaux to be setted into imps2 mode such that it can be
detected its a imps/2 mouse or not.
(my mouse device is on ps2, but the codes only set /dev/input/mice device
originally)
Then I have done, I can use the mouse wheel when SDL uses frame buff driver.
I dont exactly know I did right or wrong, I just change it for my usuage.
Correct me please, if I did something wrong.
Best regards,
Li Tsung Lin
IAP Product Dept. Engineer
EeRise Corp. (Image Processing System, Computer Vision System)
Hsin Tien, Taipei Hsien, Taiwan, R.O.C.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 22 Mar 2006 07:22:40 +0000 |
| parents | e5bc29de3f0a |
| children | 546f7c1eb755 |
| rev | line source |
|---|---|
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
1 .TH "SDL_CDOpen" "3" "Tue 11 Sep 2001, 22:58" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
| 3 SDL_CDOpen\- Opens a CD-ROM drive for access\&. | |
| 4 .SH "SYNOPSIS" | |
| 5 .PP | |
| 6 \fB#include "SDL\&.h" | |
| 7 .sp | |
| 8 \fBSDL_CD *\fBSDL_CDOpen\fP\fR(\fBint drive\fR); | |
| 9 .SH "DESCRIPTION" | |
| 10 .PP | |
| 11 Opens a CD-ROM drive for access\&. It returns a \fI\fBSDL_CD\fR\fR structure on success, or \fBNULL\fP if the drive was invalid or busy\&. This newly opened CD-ROM becomes the default CD used when other CD functions are passed a \fBNULL\fP CD-ROM handle\&. | |
| 12 .PP | |
| 13 Drives are numbered starting with 0\&. Drive 0 is the system default CD-ROM\&. | |
| 14 .SH "EXAMPLES" | |
| 15 .PP | |
| 16 .nf | |
| 17 \f(CWSDL_CD *cdrom; | |
| 18 int cur_track; | |
| 19 int min, sec, frame; | |
| 20 SDL_Init(SDL_INIT_CDROM); | |
| 21 atexit(SDL_Quit); | |
| 22 | |
| 23 /* Check for CD drives */ | |
| 24 if(!SDL_CDNumDrives()){ | |
| 25 /* None found */ | |
| 26 fprintf(stderr, "No CDROM devices available | |
| 27 "); | |
| 28 exit(-1); | |
| 29 } | |
| 30 | |
| 31 /* Open the default drive */ | |
| 32 cdrom=SDL_CDOpen(0); | |
| 33 | |
| 34 /* Did if open? Check if cdrom is NULL */ | |
| 35 if(!cdrom){ | |
| 36 fprintf(stderr, "Couldn\&'t open drive: %s | |
| 37 ", SDL_GetError()); | |
| 38 exit(-1); | |
| 39 } | |
| 40 | |
| 41 /* Print Volume info */ | |
| 42 printf("Name: %s | |
| 43 ", SDL_CDName(0)); | |
| 44 printf("Tracks: %d | |
| 45 ", cdrom->numtracks); | |
| 46 for(cur_track=0;cur_track < cdrom->numtracks; cur_track++){ | |
| 47 FRAMES_TO_MSF(cdrom->track[cur_track]\&.length, &min, &sec, &frame); | |
| 48 printf(" Track %d: Length %d:%d | |
| 49 ", cur_track, min, sec); | |
| 50 } | |
| 51 | |
| 52 SDL_CDClose(cdrom);\fR | |
| 53 .fi | |
| 54 .PP | |
| 55 .SH "SEE ALSO" | |
| 56 .PP | |
| 57 \fI\fBSDL_CD\fR\fR, \fI\fBSDL_CDtrack\fR\fR, \fI\fBSDL_CDClose\fP\fR | |
|
181
e5bc29de3f0a
Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
|
58 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:58 |