+
+int
+get_button_map(Display *display,
+ int argc,
+ char *argv[],
+ char *name,
+ char *desc)
+{
+ XDeviceInfo *info;
+ XDevice *device;
+ XAnyClassPtr ip;
+ int i;
+ int nbuttons;
+
+ if (argc != 1) {
+ fprintf(stderr, "usage: xinput %s %s\n", name, desc);
+ return EXIT_FAILURE;
+ }
+
+ info = find_device_info(display, argv[0], False);
+
+ if (!info) {
+ fprintf(stderr, "unable to find device %s\n", argv[0]);
+ return EXIT_FAILURE;
+ }
+
+ ip = (XAnyClassPtr) info->inputclassinfo;
+ nbuttons = 0;
+
+ /* try to find the number of buttons */
+ for(i=0; i<info->num_classes; i++) {
+ if (ip->class == ButtonClass) {
+ nbuttons = ((XButtonInfoPtr)ip)->num_buttons;
+ break;
+ }
+ ip = (XAnyClassPtr) ((char *) ip + ip->length);
+ }
+ if (nbuttons == 0) {
+ fprintf(stderr, "device has no buttons\n");
+ return EXIT_FAILURE;
+ }
+
+ device = XOpenDevice(display, info->id);
+ if (device) {
+ int idx;
+ unsigned char *map;
+
+ map = (unsigned char *) malloc(sizeof(unsigned char) * nbuttons);
+
+ XGetDeviceButtonMapping(display, device, map, nbuttons);
+
+ for(idx=1; idx < nbuttons + 1; idx++) {
+ printf("%d ", map[idx - 1]);
+ }
+ printf("\n");
+ XCloseDevice(display, device);
+ return EXIT_SUCCESS;
+ } else {
+ fprintf(stderr, "Unable to open device\n");
+ return EXIT_FAILURE;
+ }
+}
+
+