/// <summary> Find all windows that match the given filter </summary>
/// <param name="filter"> A delegate that returns true for windows
/// that should be returned and false for windows that should
/// not be returned </param>
public static IEnumerable <IntPtr> FindWindows(EnumWindowsProc filter = null)
{
var windows = new IntPtrEnumerable();
EnumWindows((wnd, param) =>
{
if (filter?.Invoke(wnd, param) != false)
{
// only add the windows that pass the filter
windows.Add(wnd);
}
// but return true here so that we iterate all windows
return(true);
}, IntPtr.Zero);
return(windows);
}
