fix

examples/grab.rs

@@ -26,12 +26,12 @@ fn main() {
     enable_grab();
     thread::sleep(delay);
 
+    println!("[*] ungrab keys(5s), try to press Ctrl+C");
     disable_grab();
-    println!("[*] grab keys(5s), try to press Ctrl+C");
     thread::sleep(delay);
 
-    enable_grab();
     println!("[*] grab keys(5s), try to press Ctrl+C, won't work on other applications");
+    enable_grab();
     thread::sleep(delay);
 
     exit_grab_listen();

src/linux/grab.rs

@@ -16,7 +16,7 @@ use std::{
     sync::{mpsc::Sender, Arc, Mutex},
     time::SystemTime,
 };
-use x11::xlib::{self, Display, GrabModeAsync, KeyPressMask};
+use x11::xlib::{self, Display, GrabModeAsync, KeyPressMask, KeyReleaseMask};
 
 #[derive(Debug)]
 pub struct MyDisplay(*mut xlib::Display);
@@ -92,6 +92,7 @@ pub fn enable_grab() -> Result<(), GrabError> {
 pub fn disable_grab() -> Result<(), GrabError> {
     if let Some(tx) = &*SENDER.lock().unwrap() {
         tx.send(GrabEvent::UnGrab).ok();
+        thread::sleep(Duration::from_millis(50));
     } else {
         return Err(GrabError::ListenError);
     };
@@ -184,7 +185,7 @@ fn start_grab_thread() {
         let grab_window = unsafe { xlib::XRootWindowOfScreen(screen) };
 
         unsafe {
-            xlib::XSelectInput(display, grab_window, KeyPressMask);
+            xlib::XSelectInput(display, grab_window, KeyPressMask | KeyReleaseMask);
         }
 
         let grab_fd = unsafe { xlib::XConnectionNumber(display) };