EnumWindows filter to only windows that show up on alt-tab

[xeross]

Hey People,

I've been working on an application that needs to create a list of all open windows.

So far I've got EnumWindows working with a callback, but I can't seem to filter all windows out that don't show up during alt-tabbing.

How would I filter those windows out ? Below are the checks I already enforced in my callback function.

	if(hWnd == NULL)
		return true;

	int titleLength = GetWindowTextLength(hWnd);
	if(0 == titleLength)
		return true;

	if( ( false == IsWindowVisible(hWnd) || false == IsIconic(hWnd) ) && false == IsWindow(hWnd))
		return true;

	if(GetParent(hWnd) != 0)
		return true;

	// Add it to the list here

So what would I need to add to filter it to windows only seeable on alt-tab ?

Thank you for your time, Xeross