WPF 等待游标与后台工作线程

发布于 2024-07-18 02:49:52 字数 799 浏览 8 评论 0原文

我想在 BackgroundWorker 进程在另一个线程中运行时显示沙漏光标并禁用窗口。

这就是我正在做的：

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

窗口像我想要的那样被禁用，但光标仍然是箭头。如何使其成为等待光标？

根据这个问题，它似乎适用于 vg1890：禁用 WPF 窗口中除一个控件之外的所有控件

原文

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

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没有伤那来痛 2024-07-25 02:49:52

另一种方法是全局更改光标，是..

Mouse.OverrideCursor = Cursors.Wait;

//Do something
//...

Mouse.OverrideCursor = null;

Another way is to change the cursor globally, is..

Mouse.OverrideCursor = Cursors.Wait;

//Do something
//...

Mouse.OverrideCursor = null;

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心如荒岛 2024-07-25 02:49:52

这里发生的情况似乎是 WPF 忽略了禁用窗口上的光标设置。以下解决方法似乎有效：不要禁用窗口本身，而是禁用窗口的内容：

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

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

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~没有更多了~