62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <linux/input.h>
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#define MOUSEFILE "/dev/input/mouse1"
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//
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int main()
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{
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int fd;
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struct input_event ie;
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//
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unsigned char button,bLeft,bMiddle,bRight;
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char x,y;
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int absolute_x,absolute_y;
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if((fd = open(MOUSEFILE, O_RDONLY)) == -1) {
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printf("Device open ERROR\n");
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exit(EXIT_FAILURE);
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}
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else
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{
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printf("Device open OK\n");
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}
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//
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printf("right-click to set absolute x,y coordinates origin (0,0)\n");
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while(read(fd, &ie, sizeof(struct input_event)))
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{
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unsigned char *ptr = (unsigned char*)&ie;
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int i;
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//
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button=ptr[0];
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bLeft = button & 0x1;
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bMiddle = ( button & 0x4 ) > 0;
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bRight = ( button & 0x2 ) > 0;
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x=(char) ptr[1];y=(char) ptr[2];
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// printf("bLEFT:%d, bMIDDLE: %d, bRIGHT: %d, rx: %d ry=%d\n",bLeft,bMiddle,bRight, x,y);
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//
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absolute_x+=x;
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absolute_y-=y;
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if (bRight==1)
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{
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absolute_x=0;
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absolute_y=0;
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printf("Absolute x,y coords origin recorded\n");
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}
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//
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printf("Absolute coords from TOP_LEFT= %i %i\n",absolute_x,absolute_y);
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//
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// comment to disable the display of raw event structure datas
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//
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for(i=0; i<sizeof(ie); i++)
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{
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printf("%02X ", *ptr++);
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}
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printf("\n");
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}
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return 0;
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}
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