public void Attatch()
{
IntPtr cbPtr = Marshal.GetFunctionPointerForDelegate(callback);
hook = SetWinEventHook(WindowsEventHookType.EVENT_SYSTEM_FOREGROUND,
WindowsEventHookType.EVENT_SYSTEM_FOREGROUND,
IntPtr.Zero, cbPtr, 0, 0, WindowsEventHookFlags.WINEVENT_OUTOFCONTEXT | WindowsEventHookFlags.WINEVENT_SKIPOWNPROCESS);
Debug.WriteLine("WinEventHook installed");
}
public void SetHook(string windowName)
{
if (hHook != null && !hHook.IsInvalid && !hHook.IsClosed)
{
hHook.Close();
callback = null;
}
callback = WinEventProc(windowName);
hHook = SetWinEventHook(WindowsEventHookType.EVENT_SYSTEM_FOREGROUND, WindowsEventHookType.EVENT_OBJECT_LOCATIONCHANGE, IntPtr.Zero, callback, 0, 0, WindowsEventHookFlags.WINEVENT_OUTOFCONTEXT | WindowsEventHookFlags.WINEVENT_SKIPOWNPROCESS);
var err = Marshal.GetLastWin32Error();
if (hHook == null || hHook.IsInvalid)
{
System.Console.WriteLine("Hook set failed...");
System.Console.WriteLine($"error code: {err}");
}
}