Question

I want to show the hourglass cursor and disable the window while a BackgroundWorker process runs in another thread.

This is what I’m doing:

Private Sub MyButton_Click(...)     Dim box As New AnotherWpfWindow()     box.Owner = Me     ...     box.ShowDialog()     If (box.DialogResult.GetValueOrDefault = True) Then         Me.IsEnabled = False         Me.Cursor = Cursors.Wait         MyBackgroundWorker.RunWorkerAsync()     End If End Sub  Private Sub MyBackgroundWorker_RunWorkerCompleted(...)     UpdateInterface()     Me.IsEnabled = True     Me.Cursor = Cursors.Arrow End Sub 

The window becomes disabled like I want, but the cursor remains an arrow. How can I make it the Wait cursor?

It seems to work for vg1890 according to this question: Disabling all but one control in a WPF window

Answer 1

What seems to be happening here is that WPF is ignoring the Cursor setting on the disabled window. The following workaround seems to work: instead of disabling the window itself, disable the content of the window:

C#:

((UIElement)Content).IsEnabled = false; Cursor = Cursors.Wait;  // and in RunWorkerCompleted handler: ((UIElement)Content).IsEnabled = true; Cursor = Cursors.Arrow; 

Visual Basic:

DirectCast(Content, UIElement).IsEnabled = False Cursor = Cursors.Wait  ' and in RunWorkerCompleted handler:' DirectCast(Content, UIElement).IsEnabled = True Cursor = Cursors.Arrow