Add Mod: Windows 11 Better Ultrawide Taskbar

[roeseth]

Add a mod to center taskbar and system tray as a single unit to provide better usability in ultrawide screen.
Also offer an offset only mode to just offset the system tray.

[m417z]

Thanks for the submission. Here's how it looks on my computer with the default settings, I assume the edges shouldn't look like this:

Also, you're using XAML Diagnostics (InitializeXamlDiagnosticsEx), which makes the mod incompatible with other mods or customization tools that use it. Specifically, it makes the mod incompatible with Windows 11 Taskbar Styler.

You can keep it as is, in which case I think it'd be a good idea to add a notice about it in the readme. Alternatively, you might want to update the implementation such that XAML Diagnostics API isn't used. There are several mod examples which can serve as an example, for example Start button always on the left:

windhawk-mods/mods/taskbar-start-button-position.wh.cpp

Lines 390 to 407 in 862ba36

	XamlRoot xamlRoot = nullptr;
	if (_wcsicmp(szClassName, L"Shell_TrayWnd") == 0) {
	xamlRoot = GetTaskbarXamlRoot(hWnd);
	} else if (_wcsicmp(szClassName, L"Shell_SecondaryTrayWnd") == 0) {
	xamlRoot = GetSecondaryTaskbarXamlRoot(hWnd);
	} else {
	return TRUE;
	}
	if (!xamlRoot) {
	Wh_Log(L"Getting XamlRoot failed");
	return TRUE;
	}
	if (!ApplyStyle(xamlRoot)) {
	Wh_Log(L"ApplyStyles failed");
	return TRUE;
	}

[roeseth]

thank you, yea I'll take a look at other examples. I want to minimize the conflict with other mods, but I'm pretty new to the modding here, do you mind helping me understand some other potential conflicts or preferred method that I should look into?

[m417z]

XAML Diagnostics API is a unique conflict, as only one consumer can use it due to the way it works. The API was designed for debugging, and has several shortcomings. No other conflicts are expected unless you do something specific.

preferred method that I should look into?

A good starting point is to take a mod which uses GetTaskbarXamlRoot, strip all the pieces that are specific to that mod, and see if what's left works for you, e.g. a function that is called to apply/undo taskbar customizations.

I provided taskbar-start-button-position as an example. Perhaps taskbar-multirow is a better example since it's a smaller mod.

[roeseth]

Updated to use GetTaskbarXamlRoot instead of InitializeXamlDiagnosticsEx

[m417z]

This should be run from the taskbar (UI) thread.

Something like:

HWND hTaskbarWnd = FindCurrentProcessTaskbarWnd();
if (hTaskbarWnd)
{
    RunFromWindowThread(
        hTaskbarWnd, [](void *pParam)
        { /* cleanup code here */ }, 0);
}

Also generally, I suggest to at least print errors instead of having empty catch blocks.