3 references to IsWindow
PresentationFramework (3)
System\Windows\Standard\Utilities.cs (1)
202if (NativeMethods.IsWindow(p))
System\Windows\SystemCommands.cs (2)
32if (hwnd == IntPtr.Zero || !NativeMethods.IsWindow(hwnd)) 81if (hwnd == IntPtr.Zero || !NativeMethods.IsWindow(hwnd))