- if (! (xgwa.all_event_masks & ButtonPressMask))
- XSelectInput (dpy, window, xgwa.your_event_mask | ButtonPressMask);
+ if (! (xgwa.all_event_masks & (ButtonPressMask | ButtonReleaseMask)))
+ XSelectInput (dpy, window,
+ (xgwa.your_event_mask |
+ ButtonPressMask | ButtonReleaseMask));