Some quick and dirty code to reimplement window

switch detection and process name lookup

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "auto_mute_tool"
+version = "0.1.0"
+dependencies = [
+ "com",
+ "winapi",
+]
+
+[[package]]
+name = "com"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7e17887fd17353b65b1b2ef1c526c83e26cd72e74f598a8dc1bee13a48f3d9f6"
+dependencies = [
+ "com_macros",
+]
+
+[[package]]
+name = "com_macros"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d375883580a668c7481ea6631fc1a8863e33cc335bf56bfad8d7e6d4b04b13a5"
+dependencies = [
+ "com_macros_support",
+ "proc-macro2",
+ "syn",
+]
+
+[[package]]
+name = "com_macros_support"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ad899a1087a9296d5644792d7cb72b8e34c1bec8e7d4fbc002230169a6e8710c"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.39"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c54b25569025b7fc9651de43004ae593a75ad88543b17178aa5e1b9c4f15f56f"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1feb54ed693b93a84e14094943b84b7c4eae204c512b7ccb95ab0c66d278ad1"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "syn"
+version = "1.0.96"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0748dd251e24453cb8717f0354206b91557e4ec8703673a4b30208f2abaf1ebf"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d22af068fba1eb5edcb4aea19d382b2a3deb4c8f9d475c589b6ada9e0fd493ee"
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"

Cargo.toml

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+[package]
+name = "auto_mute_tool"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+com = "0.6.0"
+winapi = {version = "0.3.9", features=["winuser", "processthreadsapi", "errhandlingapi", "winbase", "impl-default", "impl-debug"]}

src/main.rs

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+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);
+        }
+    }
+}

src/pid_to_exe.rs

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+use std::ptr::null_mut;
+
+use winapi::{
+    shared::minwindef::{DWORD, FALSE, MAX_PATH},
+    um::{
+        errhandlingapi::GetLastError,
+        processthreadsapi::OpenProcess,
+        winbase::QueryFullProcessImageNameW,
+        winnt::{PROCESS_QUERY_INFORMATION, PROCESS_VM_READ},
+    },
+};
+
+pub unsafe fn pid_to_exe_path(pid: u32) -> Result<String, DWORD> {
+    let mut exe_name = Vec::with_capacity(MAX_PATH);
+    let mut size: u32 = exe_name.capacity().try_into().unwrap();
+    let process = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pid);
+    if process == null_mut() {
+        return Err(GetLastError());
+    }
+    if QueryFullProcessImageNameW(process, 0, exe_name.as_mut_ptr(), &mut size) == FALSE {
+        return Err(GetLastError());
+    }
+    exe_name.set_len(size.try_into().unwrap());
+    let process_name = String::from_utf16_lossy(&exe_name);
+    return Ok(process_name);
+}