WPF：单击并拖动以选择多个复选框

Question

我想要的效果来实现：

1. 鼠标左键按住。
2. 鼠标移动。
3. 切换鼠标经过的任何复选框。

简单吧？ ; - ;

谢谢。

Answer 1

不太难。

代码隐藏

public partial class MainWindow : Window 
{ 
    public MainWindow() 
    { 
     InitializeComponent(); 
    } 

    private void Checkbox_OnMouseEnter(object sender, MouseEventArgs e) 
    { 
     var checkbox = sender as CheckBox; 

     if (e.LeftButton == MouseButtonState.Pressed) 
     { 
      if (checkbox != null) 
      { 
       checkbox.IsChecked = !checkbox.IsChecked; 
      } 
     } 
    } 

    private void UIElement_OnGotMouseCapture(object sender, MouseEventArgs e) 
    { 
     if (e.LeftButton == MouseButtonState.Pressed) 
     { 
      var checkbox = sender as CheckBox; 
      if (checkbox != null) 
      { 
       checkbox.IsChecked = !checkbox.IsChecked; 
       checkbox.ReleaseMouseCapture(); 
      } 
     } 
    } 

XAML

<Window x:Class="ClickAndDrag.MainWindow" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    Title="MainWindow" Height="350" Width="525"> 
<StackPanel> 
    <CheckBox MouseEnter="Checkbox_OnMouseEnter" GotMouseCapture="UIElement_OnGotMouseCapture"/> 
    <CheckBox MouseEnter="Checkbox_OnMouseEnter" GotMouseCapture="UIElement_OnGotMouseCapture"/> 
    <CheckBox MouseEnter="Checkbox_OnMouseEnter" GotMouseCapture="UIElement_OnGotMouseCapture"/> 
    <CheckBox MouseEnter="Checkbox_OnMouseEnter" GotMouseCapture="UIElement_OnGotMouseCapture"/> 
    <CheckBox MouseEnter="Checkbox_OnMouseEnter" GotMouseCapture="UIElement_OnGotMouseCapture"/> 
    <CheckBox MouseEnter="Checkbox_OnMouseEnter" GotMouseCapture="UIElement_OnGotMouseCapture"/> 
</StackPanel> 

原因释放鼠标捕获是为了防止一个复选框吞下所有的事件被点击时。