public void Install()
{
if (Installed)
{
return;
}
NativeMethods.WinEventProc callback = new NativeMethods.WinEventProc(EventProcessor);
_keyHookDelegate = GCHandle.Alloc(callback);
_keyHook = NativeMethods.SetWinEventHook(3, 32780, IntPtr.Zero, callback, 0, 0, 0);
if (_keyHook == IntPtr.Zero)
{
throw new Win32Exception("H");
}
IntPtr currentForegroundWindow = NativeMethods.GetForegroundWindow();
new Thread(new ThreadStart(() => { OnWindowChangeEvent?.Invoke(this, new WindowChangeMonitorEventArgs(currentForegroundWindow)); })).Start();
// InvokeFocusChange(currentForegroundWindow, NativeHelpers.GetTitleFromHandle(currentForegroundWindow), NativeHelpers.GetProcessFromWindowHandle(currentForegroundWindow));
//OnWindowFocus.BeginInvoke(currentForegroundWindow, Utilities.GetTitleFromHandle(currentForegroundWindow),
// Utilities.GetProcessFromWindowHandle(currentForegroundWindow), null, null);
}
private void EventProcessor(IntPtr hWinEventHook, uint eventId, IntPtr hWnd, long idObject, long idChild, uint dwEventThread, uint dwmsEventTime)
{
// if (idObject != 0 || idChild != 0) return;
if (hWnd == IntPtr.Zero)
{
return;
}
if (eventId != 3)
{
return;
}
if (!NativeMethods.IsTopLevelWindow(hWnd))
{
return;
}
new Thread(new ThreadStart(() => { OnWindowChangeEvent?.Invoke(this, new WindowChangeMonitorEventArgs(hWnd)); })).Start();
//InvokeFocusChange(hWnd, NativeMethods.GetTitleFromHandle(hWnd), NativeMethods.GetProcessFromWindowHandle(hWnd));
}
