Version 1 of Audio Scroll switcher mod

[georgiai1]

● Summary

Add audio-scroll-switcher mod to switch audio output devices with Ctrl+Scroll on the taskbar.
Displays a Windows 11-style notification popup showing the active device.
Strips parenthetical text from device names for cleaner display.

How it works

• Subclasses the taskbar window to intercept mouse wheel messages.
• Hooks Windows 11 XAML InputSite for modern taskbar support.
• Uses IPolicyConfig (undocumented COM interface) to set default audio endpoint.
• Sets all audio roles (Console, Multimedia, Communications) when switching.

Testing

• ☑ Manual: Ctrl+Scroll on taskbar cycles through audio devices.
• ☑ Manual: Notification popup appears with device name (no parenthetical text).
• ☑ Manual: Works on primary and secondary taskbars (multi-monitor).
• ☑ Manual: Works on Windows 10 and Windows 11 taskbars.

[m417z]

Nice mod, well done!

[m417z]

From the documentation:

A thread cannot use DestroyWindow to destroy a window created by a different thread.

Use SendMessage to close it instead. Currently it won't work, and if the mod is unloaded while the popup is open, it will cause a crash.

[m417z]

This might run in a different thread than CoInitializeEx. See: https://github.com/ramensoftware/windhawk/wiki/Mod-lifetime

You can just run CoUninitialize in Wh_ModInit, since it's only needed for GetAudioOutputDevices.

[m417z]

It's better to use the mod dll instance. You can use this function:

windhawk-mods/mods/windows-11-taskbar-styler.wh.cpp

Lines 3683 to 3692 in 7355e28

	HMODULE GetCurrentModuleHandle() {
	HMODULE module;
	if (!GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
	GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
	L"", &module)) {
	return nullptr;
	}
	return module;
	}

[m417z]

I suggest to add a throttle (e.g. process at most one message each 400 milliseconds), since some sensitive mice send several messages with a small delta each.