WPF 窗口拖动

WPF 窗口拖动

WPF 窗口拖动

WPF拖动通过DragMove()方法实现，下面具体讨论：

1. WPF局部窗口拖动

前台页面

      `<Grid>
    <Grid.RowDefinitions>
        <RowDefinition/>
        <!--示例第二行可拖动-->
        <RowDefinition/>
    </Grid.RowDefinitions>
    <!--设置几近透明背景，点击空白区也可拖动-->
    <Grid Grid.Row="1" Background="#01FFFFFF" MouseDown="Grid_MouseDown">
        <TextBlock VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="100" Text="可拖动区域"/>
    </Grid>
</Grid>`  

    

逻辑代码

`private void Grid_MouseDown(object sender, MouseButtonEventArgs e)
 {
    this.DragMove();
    // 设置此属性可以防止拖动到屏幕边缘，窗体最大化
    this.ResizeMode = ResizeMode.NoResize;
 }`  	 

    

2. WPF 拖动窗口限制在屏幕显示区域内

   在逻辑代码里添加限制，添加限制后的逻辑代码如下：	
`   private void Grid_MouseDown(object sender, MouseButtonEventArgs e)
    {
        this.DragMove();
        // 设置此属性可以防止拖动到屏幕边缘，窗体最大化
        this.ResizeMode = ResizeMode.NoResize;
        if (Top < SystemParameters.VirtualScreenTop)
            Top = SystemParameters.VirtualScreenTop;
        if (Left < SystemParameters.VirtualScreenLeft)
            Left = SystemParameters.VirtualScreenLeft;
        if (Left + Width > SystemParameters.VirtualScreenLeft + SystemParameters.VirtualScreenWidth)
            Left = SystemParameters.VirtualScreenLeft + SystemParameters.VirtualScreenWidth - Width;
        if (Top + Height > SystemParameters.VirtualScreenTop + SystemParameters.VirtualScreenHeight)
            Top = SystemParameters.VirtualScreenHeight + SystemParameters.VirtualScreenTop - Height;
    }`