func (k *Keyboard) initLEDWatch() {
C.gtk_init(nil, nil)
win := C.gdk_x11_get_default_xdisplay()
var state C.uint
var lstate byte
for range time.Tick(16 * time.Millisecond) {
lstate = 0
// Caps: 0, Num: 1, Scroll: 2
C.XkbGetIndicatorState(win, C.XkbUseCoreKbd, &state)
if 0x4&state != 0 {
lstate += 0x4
}
if 0x2&state != 0 {
lstate += 1
}
if 0x1&state != 0 {
lstate += 2
}
// Num: 0, Caps: 1, Scroll: 2
k.device0.Control(0x21, 0x09, 0x0200, 0, []byte{lstate})
}
}
func (window *GTKWindow) GetHDC() unsafe.Pointer {
data := XWinData{
dpy: C.gdk_x11_get_default_xdisplay(),
win: C.gdk_x11_get_default_root_xwindow(),
}
return unsafe.Pointer(&data)
}