Get wl_registry global object

src/main.rs

@@ -12,8 +12,30 @@ fn wl_connect() -> Result<UnixStream, Box<dyn Error>> {
     Ok(sock)
 }
 
+
+fn wl_display_get_registry(wl_sock: &mut UnixStream, wl_current_id: &mut u32) -> Result<(), Box<dyn Error>> {
+    const OBJECT: u32 = 1;
+    const OPCODE: u16 = 1;
+    const MSG_SIZE: u16 = 12;
+
+    let mut request = [0u8; MSG_SIZE as usize];
+    request[0..4].copy_from_slice(&OBJECT.to_ne_bytes());
+    request[4..6].copy_from_slice(&OPCODE.to_ne_bytes());
+    request[6..8].copy_from_slice(&MSG_SIZE.to_ne_bytes());
+
+    *wl_current_id += 1;
+    request[8..12].copy_from_slice(&wl_current_id.to_ne_bytes());
+
+    let written = wl_sock.write(&request)?;
+    assert!(written == MSG_SIZE.into());
+
+    Ok(())
+}
+
 fn main() ->Result<(), Box<dyn Error>> {
     
+    let mut wl_current_id: u32 = 0;
+
     let mut wl_sock = match wl_connect() {
         Ok(res) => res,
         Err(err) => {
@@ -22,5 +44,7 @@ fn main() ->Result<(), Box<dyn Error>> {
         }
     };
 
+    wl_display_get_registry(&mut wl_sock, &mut wl_current_id);
+
     Ok(())
 }