WPF Hide on Close?

Question

How to do it in wpf

Vb.net

Private Sub FrmSettings_FormClosing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing e.Cancel = (e.CloseReason = Forms.CloseReason.UserClosing) Me.Hide() End Sub 

WITH#

 private void FrmSettings_FormClosing(object sender, System.Windows.Forms.FormClosingEventArgs e) { e.Cancel = (e.CloseReason == Forms.CloseReason.UserClosing); this.Hide(); } 

like wpf Close event just gives me e.Cancel and no closereason: (

Answer 1

In the WPF implementation, there is no equivalent by default. You can use the window hook to get the reason.

The following post details how to do this: http://social.msdn.microsoft.com/forums/en-US/wpf/thread/549a4bbb-e77b-4c5a-b724-07996774c60a/

Answer 2

I'm not sure I understand that WinForms approach solves.

Isn't it better to always do this:

 Protected Overrides Sub OnClosing(ByVal e As System.ComponentModel.CancelEventArgs) e.Cancel = True Me.Hide() End Sub 

And then install this in your application?

 Application.Current.ShutdownMode = System.Windows.ShutdownMode.OnMainWindowClose 

This way, whenever your child windows close, you save them for faster display later, but your application still shuts down when the main window closes (i.e. exit, shutdown, etc.).

Answer 3

I would like to thank Bob King for his hint and make an addition to his code as C # WPF. It works for me. My application is a tray icon by type. In the WPF XAML form code behind:

 protected override void OnInitialized(EventArgs e) { base.OnInitialized(e); Application.Current.ShutdownMode = System.Windows.ShutdownMode.OnMainWindowClose; } private bool m_isExplicitClose = false;// Indicate if it is an explicit form close request from the user. protected override void OnClosing(System.ComponentModel.CancelEventArgs e) { base.OnClosing(e); if (m_isExplicitClose == false)//NOT a user close request? ... then hide { e.Cancel = true; this.Hide(); } } private void OnTaskBarMenuItemExitClick(object sender, RoutedEventArgs e) { m_isExplicitClose = true;//Set this to unclock the Minimize on close this.Close(); }