最后我用下面的方法实现它。该对话框使用ShowDialog()
显示,但已启动(并在线程中创建)。 ShowDialog()
实现了自己的消息循环,因此当表单在线程中启动时,主窗体会响应事件,并且您可以关闭主窗体并且子窗体仍然响应事件。这对于ShellExtension应用程序非常有用。
请记住为了释放线程以及外壳扩展线程(每个外壳扩展窗口和孩子都在一个线程中执行),在表单上全部处理。
下面的代码固定我的问题:
protected virtual void SetupViewControl()
{
ThreadPool.QueueUserWorkItem(new WaitCallback(DoSetupViewControl));
while (!mViewControlCreated)
{
// wait for view control created
Thread.Sleep(100);
}
}
private bool mViewControlCreated = false;
protected virtual void DoSetupViewControl(object state)
{
mViewControl = ViewControlFactory.CreateViewControl();
mViewControl.Dock = DockStyle.Fill;
mViewControl.Initialize();
this.Controls.Clear();
this.Controls.Add(mViewControl);
IntPtr wHnd = GetActiveWindow();
IWin32Window owner = GetOwner(wHnd);
mViewControlCreated = true;
ShowDialog(owner);
this.Dispose();
}
private IWin32Window GetOwner(IntPtr wHnd)
{
if (wHnd == IntPtr.Zero) return null;
return new WindowWrapper(wHnd);
}
[DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
private static extern IntPtr GetActiveWindow();
private class WindowWrapper : IWin32Window
{
private IntPtr mHwnd;
public WindowWrapper(IntPtr handle)
{
mHwnd = handle;
}
public IntPtr Handle
{
get { return mHwnd; }
}
}