顶部WPF窗口不会随着Window Forms父窗口最小化 [英] Topmost WPF window does not minimize with Window Forms parent

问题描述

大家好，

我在Windows Forms Forms中使用ElementHost拥有WPF控件.通过此WPF控件，我打开了一个( non -modal)WPF窗口(使用Show())，该窗口设置为最高，因为它应始终出现在Windows Forms Form的前面.下面的树显示了这种情况:

Windows窗体Form
+ ElementHost
+ WPF控件
+ +打开( non -modal)最上方的WPF窗口

现在，如果最小化了Form(即最小化了应用程序)，我也希望最顶层的WPF窗口也最小化.当然，这是行不通的，因为WPF窗口不知道表单应该是它的所有者.因此，我在WPF控件中使用了以下代码来将Form设置为WPF窗口的所有者:

Hi all,

I have a WPF control inside a Windows Forms Form using an ElementHost. From this WPF control, I open a (non-modal) WPF window (using Show()) which is set topmost because it should always appear in front of the Windows Forms Form. The following tree shows this situation:

Windows Forms Form
   + ElementHost
      + WPF Control
         + opens (non-modal) topmost WPF Window

Now, if the Form is minimized (i.e. the application is minimized), I want the topmost WPF window to minimize as well. Of course this does not work because the WPF window does not know that the Form should be its owner. Therefore, I have used the following code within the WPF control to set the Form as the Owner of the WPF window:

1	//找到此WPF控件的Windows窗体父窗口将其设置为父窗口 //-此"是ElementHost中的WPF控件
3	IntPtrparentFormHandle=IntPtr.Zero;
4	HwndSource wpfHandle = PresentationSource. FromVisual( this ) as HwndSource;
5
6	//如果没有wpfHandle，则托管WPF控件null
7	如果 (wpfHandle！= 空 )
8
10	System.Windows.Forms.Integration.ElementHost host = System.Windows.Forms.Control.FromChildHandle(wpfHandle.句柄)为 System.Windows.Fo rms.Integration.ElementHost;
11	style ="font-size:11px">(host！= 空 )
12	{{
13	style ="font-size:11px">
14	空 //获取父Windows窗体的窗体的句柄
17
18
19	}
20
21	如果 (parentFormHandle！= IntPtr.Zero)
22	{
23	//将WPF对话框的所有者设置为表单句柄 WindowInteropHelperwindowHelper = WindowInteropHelper(myWpfDialog);
25	windowHelper.Owner == parentFormHandle;
26	}
27
28	myWpfDialog.Show();

1	// find the Windows Forms parent window of this WPF control to set it as the parent
2	// of the WPF popup - "this" is the WPF control in the ElementHost
3	IntPtr parentFormHandle = IntPtr.Zero;
4	HwndSource wpfHandle = PresentationSource.FromVisual(this) as HwndSource;
5
6	// the WPF control is hosted if the wpfHandle is not null
7	if (wpfHandle != null)
8	{
9	// get the ElementHost which hosts this WPF control
10	System.Windows.Forms.Integration.ElementHost host = System.Windows.Forms.Control.FromChildHandle(wpfHandle.Handle) as System.Windows.Forms.Integration.ElementHost;
11	if (host != null)
12	{
13	// get the parent Form of the ElementHost
14	System.Windows.Forms.Form parentForm = host.FindForm();
15	if (parentForm != null)
16	// get the handle of the parent Windows Forms Form
17	parentFormHandle = parentForm.Handle;
18	}
19	}
20
21	if (parentFormHandle != IntPtr.Zero)
22	{
23	// set the owner of the WPF dialog to the Form handle
24	WindowInteropHelper windowHelper = new WindowInteropHelper(myWpfDialog);
25	windowHelper.Owner = parentFormHandle;
26	}
27
28	myWpfDialog.Show();

推荐答案

我正在做同样的事情，但是使用WPF UserControl，它工作正常.尝试改用UserControl.

感谢

Ben

I'm doing this same thing but using a WPF UserControl and it works fine.  Try using a UserControl instead.

Thanks

Ben

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