+ /* Handle the first map event: We are finally visible! */
+ if (!xiInited && event->type == MapNotify) {
+ /* XInput Extension available? */
+ int eventID, errorID;
+ if (!XQueryExtension(dpy, "XInputExtension", &xiOpcode, &eventID, &errorID)) {
+ qCritical() << "X Input extension not available";
+ }
+
+ /* Which version of XI2? We support 2.0 */
+ int major = 2, minor = 1;
+ if (XIQueryVersion(dpy, &major, &minor) == BadRequest) {
+ qCritical() << "XI2 not available. Server supports" << major << "." <<
+ minor;
+ }
+
+ qDebug() << "System supports XI2";
+
+
+ // Now let's listen to keypress events
+ XIEventMask eventmask;
+ unsigned char mask [1] = { 0 }; // will change
+ eventmask.deviceid = XIAllMasterDevices;
+ eventmask.mask_len = sizeof (mask); // in bytes, for whatever reason...
+ eventmask.mask = mask;
+ XISetMask(mask, XI_KeyPress);
+ XISelectEvents (dpy, winId(), &eventmask, 1);
+
+ // finally, grab all focuses
+ int ndevices;
+ XIDeviceInfo* devices = XIQueryDevice(dpy, XIAllMasterDevices, &ndevices);
+ for (int i = 0; i < ndevices; ++i) {
+ if (devices[i].use != XIMasterKeyboard) continue;
+ qDebug() << "Found master keyboard with ID" << devices[i].deviceid;
+ XISetFocus(dpy, devices[i].deviceid, winId(), CurrentTime);
+ }
+ XIFreeDeviceInfo(devices);