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#include <br>
#include <br>
<br>
void main(int argc,char **argv) <br>
{ <br>
fd_set readset; <br>
Gpm_Event event; <br>
Gpm_Connect conn; <br>
<br>
conn.eventMask = ~0; <br>
conn.defaultMask = ~GPM_HARD; <br>
conn.maxMod = 0; <br>
conn.minMod = 0; <br>
<br>
if (Gpm_Open(&conn,0)==-1) { <br>
printf("Can not open mouse connection"); <br>
exit(1); <br>
} <br>
<br>
while (1) { <br>
<br>
FD_ZERO(&readset); <br>
FD_SET(gpm_fd,&readset); <br>
select(gpm_fd+1,&readset,0,0,0); <br>
<br>
if (FD_ISSET(gpm_fd,&readset)) { <br>
if (Gpm_GetEvent(&event)>0) { <br>
printf("mouse: event 0x%02X, at %2i %2i (delta %2i %2i)," <br>
"button %i, modifiers 0x%02X
", <br>
event.type, <br>
event.x,event.y, <br>
event.dx,event.dy, <br>
event.buttons, <br>
event.modifiers <br>
); <br>
} <br>
} <br>
} <br>
<br>
while (Gpm_Close()); <br>
<br>
} <br>
<br>
编译 <br>
gcc -o gpm_mouse gpm_mouse.c -lgpm <br>
检验结果 <br>
mouse: event 0x01, at 15 1 (delta -2 -1),button 0, modifiers 0x00 <br>
mouse: event 0x01, at 14 1 (delta -1 0),button 0, modifiers 0x00 <br>
mouse: event 0x01, at 13 1 (delta -1 0),button 0, modifiers 0x00 <br>
<br>
-------------------------------------------------------------------------------- <br>
<br>
资料结构 <br>
typedef struct Gpm_Connect { <br>
unsigned short eventMask, defaultMask; <br>
unsigned short minMod, maxMod; <br>
int pid; <br>
int vc; <br>
} Gpm_Connect; <br>
enum Gpm_Etype { <br>
GPM_MOVE=1, <br>
GPM_DRAG=2, /* exactly one of the bare ones is active at a time */ <br>
GPM_DOWN=4, <br>
GPM_UP= 8, <br>
<br>
GPM_SINGLE=16, /* at most one in three is set */ <br>
GPM_DOUBLE=32, <br>
GPM_TRIPLE=64, /* WARNING: I depend on the values */ <br>
<br>
GPM_MFLAG=128, /* motion during click? */ <br>
GPM_HARD=256, /* if set in the defaultMask, force an already used event to pass over to another handler */ <br>
<br>
GPM_ENTER=512, /* enter event, user in Roi's */ <br>
GPM_LEAVE=1024 /* leave event, used in Roi's */ <br>
}; <br>
<br>
typedef struct Gpm_Event { <br>
unsigned char buttons, modifiers; /* try to be a multiple of 4 */ <br>
unsigned short vc; <br>
short dx, dy, x, y; <br>
enum Gpm_Etype type; <br>
int clicks; <br>
enum Gpm_Margin margin; <br>
} Gpm_Event; <br>
<br>
typedef int Gpm_Handler(Gpm_Event *event, void *clientdata); <br>
<br>
函数宣告 <br>
int Gpm_Open(Gpm_Connect * CONN, int FLAGS); <br>
int Gpm_Close(void); <br>
int Gpm_GetEvent(Gpm_Event * EVENT); <br>
int Gpm_Getc(FILE * fp); <br>
#define Gpm_Getchar() Gpm_Getc(stdin) <br>
int Gpm_Wgetch(); <br>
#define Gpm_Getch() (Gpm_Wgetch(NULL)) <br>
int Gpm_Repeat (int millisecs); <br>
int Gpm_DrawPointer (int X, int Y, int FD); <br>
int GPM_DRAWPOINTER (Gpm_Event *EPTR;) <br>
int Gpm_FitValuesM (int *X, int *Y, int MARGIN); <br>
int Gpm_FitValues (X,Y); <br>
Gpm_FitEvent (EPTR); <br>
char *Gpm_GetLibVersion (int *where); <br>
char *Gpm_GetServerVersion (int *where); <br>
int Gpm_GetSnapshot (Gpm_Event *ePtr); <br>
<br>
Linux程式设计-20.getopt <br>
http://www.openchess.org/noitatsko/programming/ (2001-05-27 13:04:00) <br>
<br>
<br>
getopt在UNIX下的命令列程式特别好用，特别是在你有许多参数要加入时。一般来说，你可以透过「man 3 getopt」来获得其说明。 <br>
<br>
-------------------------------------------------------------------------------- <br>
<br>
int getopt(int argc, char * const argv[],const char *optstring); <br>
extern char *optarg; <br>
extern int optind, opterr, optopt; <br>
<br>
-------------------------------------------------------------------------------- <br>
<br>
例：这个例是从manpage抄出来的，蛮不清处的。我会再找时间写一系列例。 <br>
#include <br>
<br>
int <br>
main (argc, argv) <br>
int argc; <br>
char **argv; <br>
{ <br>
int c; <br>
int digit_optind = 0; <br>
<br>
while (1) <br>
{ <br>
int this_option_optind = optind ? optind : 1; <br>
int option_index = 0; <br>
static struct option long_options[] = <br>
{ <br>
{"add", 1, 0, 0}, <br>
{"append", 0, 0, 0}, <br>
{"delete", 1, 0, 0}, <br>
{"verbose", 0, 0, 0}, <br>
{"create", 1, 0, 'c'}, <br>
{"file", 1, 0, 0}, <br>
{0, 0, 0, 0} <br>
}; <br>
<br>
c = getopt_long (argc, argv, "abc:d:012", <br>
long_options, &option_index); <br>
if (c == -1) <br>
break; <br>
<br>
switch (c) <br>
{ <br>
case 0: <br>
printf ("option %s", long_options[option_index].name); <br>
if (optarg) <br>
printf (" with arg %s", optarg); <br>
printf (""); <br>
break; <br>
<br>
case '0': <br>
case '1': <br>
case '2': <br>
if (digit_optind != 0 && digit_optind != this_option_optind) <br>
printf ("digits occur in two different argv-elements."); <br>
digit_optind = this_option_optind; <br>
printf ("option %c", c); <br>
break; <br>
<br>
case 'a': <br>
printf ("option a"); <br>
break; <br>
<br>
case 'b': <br>
printf ("option b"); <br>
break; <br>
<br>
case 'c': <br>
printf ("option c with value `%s'", optarg); <br>
break; <br>
<br>
case 'd': <br>
printf ("option d with value `%s'", optarg); <br>
break; <br>
<br>
case '?': <br>
break; <br>
<br>
default: <br>
printf ("?? getopt returned character code 0%o ??", c); <br>
} <br>
} <br>
<br>
if (optind < argc) <br>
{ <br>
printf ("non-option ARGV-elements: "); <br>
while (optind < argc) <br>
printf ("%s ", argv[optind++]); <br>
printf (""); <br>
} <br>
<br>
exit (0); <br>
} <br>
<br>
<br>
<br>
<br>
</FONT><br>
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