Scaffolding for COM work

src/main.rs

@@ -2,6 +2,7 @@ mod pid_to_exe;
 
 use windows::Win32::{
     Foundation::{HINSTANCE, HWND},
+    Media::Audio::{IMMNotificationClient, IMMNotificationClient_Impl},
     UI::{
         Accessibility::{SetWinEventHook, HWINEVENTHOOK},
         WindowsAndMessaging::{
@@ -58,6 +59,45 @@ fn win_event_hook_loop() {
         }
     }
 }
+
+#[windows::core::implement(IMMNotificationClient)]
+struct DeviceNotification;
+
+impl IMMNotificationClient_Impl for DeviceNotification {
+    fn OnDeviceStateChanged(
+        &self,
+        pwstrdeviceid: &windows::core::PCWSTR,
+        dwnewstate: u32,
+    ) -> windows::core::Result<()> {
+        Ok(())
+    }
+
+    fn OnDeviceAdded(&self, pwstrdeviceid: &windows::core::PCWSTR) -> windows::core::Result<()> {
+        Ok(())
+    }
+
+    fn OnDeviceRemoved(&self, pwstrdeviceid: &windows::core::PCWSTR) -> windows::core::Result<()> {
+        Ok(())
+    }
+
+    fn OnDefaultDeviceChanged(
+        &self,
+        flow: windows::Win32::Media::Audio::EDataFlow,
+        role: windows::Win32::Media::Audio::ERole,
+        pwstrdefaultdeviceid: &windows::core::PCWSTR,
+    ) -> windows::core::Result<()> {
+        Ok(())
+    }
+
+    fn OnPropertyValueChanged(
+        &self,
+        pwstrdeviceid: &windows::core::PCWSTR,
+        key: &windows::Win32::UI::Shell::PropertiesSystem::PROPERTYKEY,
+    ) -> windows::core::Result<()> {
+        Ok(())
+    }
+}
+
 fn main() {
     win_event_hook_loop();
 }