hi all.
This is my ~/.xinitrc :
exec xterm
I start x with 'startx' command, and then run 'testx'. This is source :
/* gcc testx.c -o testx -lX11 */
1 #include <stdio.h>
2 #include <X11/Xlib.h>
3 int main(int argc, char *argv[])
4 {
5
6 Display *display=XOpenDisplay(NULL);
7 Window root, parent, *child=NULL, root_win=RootWindow(display,
DefaultScreen(display));
8 unsigned int n;
9 XWindowAttributes attr;
10 if(XQueryTree(display, root_win, &root, &parent, &child, &n))
11 for(size_t i=0; i<n; i++)
12 if(XGetWindowAttributes(display, child[i], &attr)
13 && attr.map_state == IsViewable
14 && XSelectInput(display, child[i], ButtonPressMask))
15 printf("set %x\n", child[i]);
16 XEvent event;
17 while(1)
18 {
19 XNextEvent(display, &event);
20 if(event.type == ButtonPress)
21 printf("type=%d, w=%x\n", event.type, event.xbutton.window);
22 }
23 }
I can not get ButtonPress when i press button. But I can get EnterNotify if i
replace ButtonPressMask with EnterWindowMask. why ?
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