WindowsFormsHost 中的 MouseWheel 事件 [英] MouseWheel event in WindowsFormsHost

问题描述

我有一个 WPF 应用程序，它使用 WindowsFormsHost 控件来承载 Windows.Forms 控件.

I have a WPF application that is using a WindowsFormsHost control to host a control of Windows.Forms.

我尝试实现 MouseWheel 事件 - 但似乎 MouseWheel 事件从未触发.

I tried to implement the MouseWheel event - but it seems that the the MouseWheel event never fired.

是否有解决此问题的方法?

Is there a workaround for this issue?

推荐答案

一种解决方法是使用事件 MouseEnter.

A workaround is to use event MouseEnter.

假设您在 WindowsFormHost 中有一个 winform 标签

Suppose you have a winform label in a WindowsFormHost

在 XAML 中

<WindowsFormsHost Height="100" Name="windowsFormsHost1" Width="200" />

在 C# 中

System.Windows.Forms.Label label = new System.Windows.Forms.Label();
label.Text = "Hallo";`
label.MouseEnter += new EventHandler(label_MouseEnter);
label.MouseWheel += new System.Windows.Forms.MouseEventHandler(label_MouseWheel);
windowsFormsHost1.Child = label;

.....

void label_MouseEnter(object sender, EventArgs e)
{
    (sender as System.Windows.Forms.Label).Focus();
}

void label_MouseWheel(object sender, System.Windows.Forms.MouseEventArgs e)
{
    (sender as System.Windows.Forms.Label).BackColor = System.Drawing.Color.Red;
}

现在 MouseWheel 应该可以工作了(标签应该改变颜色)

Now MouseWheel should work (label shoud change color)

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