|
1
|
#include <stdio.h>
|
|
2
|
#include <X11/Xlib.h>
|
|
3
|
#include <X11/keysym.h>
|
|
4
|
#include <X11/Xatom.h>
|
|
5
|
|
|
6
|
#define error printf
|
|
7
|
|
|
8
|
int main(int argc, char **argv) {
|
|
9
|
Display *dpy = XOpenDisplay(NULL);
|
|
10
|
if (NULL == dpy) {
|
|
11
|
error("XOpenDisplay(NULL) failed.\n");
|
|
12
|
goto err_no_display;
|
|
13
|
}
|
|
14
|
printf("got display\n");
|
|
15
|
int width = 640;
|
|
16
|
int height = 480;
|
|
17
|
|
|
18
|
Window window = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy),
|
|
19
|
0, 0, width, height, 0, 0, 0);
|
|
20
|
if (0 == window) {
|
|
21
|
error("XCreateSimpleWindow() failed.\n");
|
|
22
|
goto err_no_window;
|
|
23
|
}
|
|
24
|
printf("created window\n");
|
|
25
|
|
|
26
|
|
|
27
|
XMapWindow(dpy, window);
|
|
28
|
printf("mapped window\n");
|
|
29
|
|
|
30
|
XSelectInput(dpy, window, ExposureMask | KeyPressMask | StructureNotifyMask |
|
|
31
|
PointerMotionMask);
|
|
32
|
Atom wm_delete_window = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
|
|
33
|
XSetWMProtocols(dpy, window, &wm_delete_window, 1);
|
|
34
|
printf("selected inputs\n");
|
|
35
|
|
|
36
|
int grab = 0;
|
|
37
|
|
|
38
|
while (1) {
|
|
39
|
while (XPending(dpy)) {
|
|
40
|
XEvent ev;
|
|
41
|
XNextEvent(dpy, &ev);
|
|
42
|
if (ev.xany.window == window) {
|
|
43
|
XKeyEvent *keyEvent;
|
|
44
|
XMotionEvent *pointerEvent;
|
|
45
|
KeySym keySym;
|
|
46
|
switch (ev.type) {
|
|
47
|
case KeyPress:
|
|
48
|
keyEvent = (XKeyEvent*)(&ev);
|
|
49
|
keySym = XLookupKeysym(keyEvent, 0);
|
|
50
|
switch (keySym) {
|
|
51
|
case XK_Escape:
|
|
52
|
goto err_no_egldisplay;
|
|
53
|
break;
|
|
54
|
case XK_Return:
|
|
55
|
grab ^= 1;
|
|
56
|
if (grab)
|
|
57
|
XGrabPointer(dpy, window, True, 0, GrabModeAsync, GrabModeAsync,
|
|
58
|
window, None, CurrentTime);
|
|
59
|
else
|
|
60
|
XUngrabPointer(dpy, CurrentTime);
|
|
61
|
break;
|
|
62
|
}
|
|
63
|
break;
|
|
64
|
case MotionNotify:
|
|
65
|
pointerEvent = (XMotionEvent*)(&ev);
|
|
66
|
printf("pointer at (%d, %d) rel (%d, %d)\n",
|
|
67
|
pointerEvent->x, pointerEvent->y, pointerEvent->x_root,
|
|
68
|
pointerEvent->y_root);
|
|
69
|
break;
|
|
70
|
case ClientMessage:
|
|
71
|
goto err_no_egldisplay;
|
|
72
|
break;
|
|
73
|
}
|
|
74
|
}
|
|
75
|
}
|
|
76
|
}
|
|
77
|
|
|
78
|
err_no_egldisplay:
|
|
79
|
XUnmapWindow(dpy, window);
|
|
80
|
XDestroyWindow(dpy, window);
|
|
81
|
err_no_window:
|
|
82
|
XCloseDisplay(dpy);
|
|
83
|
err_no_display:
|
|
84
|
return 0;
|
|
85
|
}
|