自定义事件wpf
// 自定义控件
public class MyCustomControl : Control
{
public static readonly RoutedEvent MyCustomEvent = EventManager.RegisterRoutedEvent(
"MyCustom",
RoutingStrategy.Bubbling,
typeof(RoutedEventHandler),
typeof(MyCustomControl)
);
public event RoutedEventHandler MyCustom
{
add { AddHandler(MyCustomEvent, value); }
remove { RemoveHandler(MyCustomEvent, value); }
}
protected void OnMyCustom()
{
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
public class MyCustomControl : Control
{
public static readonly RoutedEvent MyCustomEvent = EventManager.RegisterRoutedEvent(
"MyCustom",
RoutingStrategy.Bubbling,
typeof(RoutedEventHandler),
typeof(MyCustomControl)
);
public event RoutedEventHandler MyCustom
{
add { AddHandler(MyCustomEvent, value); }
remove { RemoveHandler(MyCustomEvent, value); }
}
protected void OnMyCustom(MouseEventArgs e)
{
// 获取鼠标相对于当前控件的坐标
Point mousePosition = e.GetPosition(this);
// 创建自定义事件参数，包含鼠标坐标
var args = new RoutedEventArgs(MyCustomEvent)
{
Source = this
};
// 将鼠标坐标存储在事件参数的附加属性中
args.SetData("MousePosition", mousePosition);
// 触发事件
RaiseEvent(args);
}
protected override void
OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
base.OnMouseLeftButtonDown(e);
（加触发条件） 鼠标类的事件通常在
mouseenter 或者onmouseleftbuttondown
的基础上改触发事件
point pos=mouse.getposition(某个控件)相对某个控件的坐标
键盘就是keydown上改e.key==key.enter
OnMyCustom();
}
static MyCustomControl()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(MyCustomControl), new FrameworkPropertyMetadata(typeof(MyCustomControl)));
}
}
<Window x:Class="MyApplication.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:MyApplication"
Title="MainWindow" Height="350" Width="525">
<Grid>
<local:MyCustomControl MyCustom="MyCustomControl_MyCustom" />
</Grid>
</Window>
private void MyCustomControl_MyCustom(object sender, RoutedEventArgs e)
{
// 从事件参数中获取鼠标坐标
if (e.GetData("MousePosition") is Point mousePosition)
{
MessageBox.Show($"Mouse Position: X = {mousePosition.X}, Y = {mousePosition.Y}");
}
}