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我在WPF中有一个UserControl。我也有无边界窗口。要移动它,我使用DragMove。 But-在用户控件中获取单击事件 - 我使用PreviewMouseLeftButtonUp事件并在UserControl_MouseEnter上捕获鼠标。 问题是,如果我单击控件,然后移动窗口 - 当点击控件附近的时,也可以触发事件,而不是它。UserControl PreviewMouseLeftButtonUp问题
这里是我的代码:
UserControl1.xaml:
<UserControl x:Class="WpfApplication1.UserControl1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300" MouseEnter="UserControl_MouseEnter" MouseLeave="UserControl_MouseLeave">
<Grid>
</Grid>
</UserControl>
UserControl1.xaml.cs:
public partial class UserControl1 : UserControl
{
public UserControl1()
{
InitializeComponent();
}
private void UserControl_MouseEnter(object sender, MouseEventArgs e)
{
CaptureMouse();
}
private void UserControl_MouseLeave(object sender, MouseEventArgs e)
{
ReleaseMouseCapture();
}
}
MainWindow.xaml:
<Window x:Class="WpfApplication1.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" xmlns:my="clr-namespace:WpfApplication1" WindowStyle="None" MouseLeftButtonDown="Window_MouseLeftButtonDown">
<Grid>
<my:UserControl1 Margin="39,29,380,199" Background="Red" PreviewMouseLeftButtonUp="UserControl1_PreviewMouseLeftButtonUp">
</my:UserControl1>
</Grid>
</Window>
主窗口。 xaml.cs:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
DragMove();
}
private void UserControl1_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
MessageBox.Show("Hello World");
}
}
如果你运行这个APP-你会发现,如果你点击控制,然后拖动窗口,然后点击控制近(侧可能会有所不同) - 它将即使触发的PreviewMouseLeftButtonUp事件你没有点击控制本身。
任何想法如何解决这个问题? 谢谢!