Some quick and dirty code to reimplement window

switch detection and process name lookup

src/main.rs

@@ -0,0 +1,58 @@
+mod pid_to_exe;
+
+use std::ptr::null_mut;
+use winapi::{
+    shared::windef::{HWINEVENTHOOK__, HWND__},
+    um::winuser::{
+        DispatchMessageW, GetMessageW, GetWindowThreadProcessId, TranslateMessage,
+        EVENT_SYSTEM_FOREGROUND, EVENT_SYSTEM_MINIMIZEEND, MSG, WINEVENT_OUTOFCONTEXT,
+        WINEVENT_SKIPOWNPROCESS,
+    },
+};
+
+use crate::pid_to_exe::pid_to_exe_path;
+
+unsafe extern "system" fn win_event_proc(
+    _hook: *mut HWINEVENTHOOK__,
+    event: u32,
+    hwnd: *mut HWND__,
+    _id_object: i32,
+    _id_child: i32,
+    _dw_event_thread: u32,
+    _dwms_event_time: u32,
+) {
+    if event == EVENT_SYSTEM_FOREGROUND || event == EVENT_SYSTEM_MINIMIZEEND {
+        let mut pid: u32 = 0;
+        GetWindowThreadProcessId(hwnd, &mut pid);
+        println!("{:?}", pid_to_exe_path(pid));
+    }
+}
+
+fn main() {
+    unsafe {
+        winapi::um::winuser::SetWinEventHook(
+            EVENT_SYSTEM_FOREGROUND,
+            EVENT_SYSTEM_FOREGROUND,
+            null_mut(),
+            Some(win_event_proc),
+            0,
+            0,
+            WINEVENT_OUTOFCONTEXT | WINEVENT_SKIPOWNPROCESS,
+        );
+        winapi::um::winuser::SetWinEventHook(
+            EVENT_SYSTEM_MINIMIZEEND,
+            EVENT_SYSTEM_MINIMIZEEND,
+            null_mut(),
+            Some(win_event_proc),
+            0,
+            0,
+            WINEVENT_OUTOFCONTEXT | WINEVENT_SKIPOWNPROCESS,
+        );
+
+        let mut msg: MSG = Default::default();
+        while GetMessageW(&mut msg, null_mut(), 0, 0) > 0 {
+            TranslateMessage(&msg);
+            DispatchMessageW(&msg);
+        }
+    }
+}