我希望使用鼠标输入事件为我的用户控制 [英] i want use from mouse enter event for my user control
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问题描述
hi
i想要使用鼠标进入和离开事件以供我的用户控制。
i想要在鼠标进入时改变用户控制forecolor,但是不能正常工作鼠标输入事件用户控制项目,
我的代码用户控件是(这是用于悬停):
private void lbl_operation_MouseHover( object sender,EventArgs e)
{
lbl_operation.ForeColor = Color.Yellow;
}
我怎么做?
解决方案
UserControl的完整示例:
使用System;
使用System.Collections.Generic;使用System.ComponentModel
;
使用System.Data;使用System.Drawing
;
使用System.Linq;
使用System.Text;
使用System.Threading.Tasks;
使用System.Windows.Forms;
命名空间Test_UserControl
{
公共部分类Form1:表格
{
MyCtl ctl = new MyCtl();
颜色ctlDefaultColor;
public Form1()
{
InitializeComponent();
InitOthers();
}
private void InitOthers()
{
this.SuspendLayout();
//设置ctl属性
this.ctl.Left = 10;
this.ctl.Top = 10;
this.Controls.Add(ctl);
this.ctl.MouseEnter + = ctl_MouseEnter;
this.ctl.MouseLeave + = ctl_MouseLeave;
this.ctlDefaultColor = this.ctl.ForeColor;
this.ResumeLayout(false);
this.PerformLayout();
}
void ctl_MouseLeave(object sender,EventArgs e)
{
//恢复背景颜色
this.ctl.ForeColor = this.ctlDefaultColor;
}
void ctl_MouseEnter(object sender,EventArgs e)
{
// set backcolor
this.ctl.ForeColor = Color.Yellow;
}
}
公共类MyCtl:UserControl
{
Label lbl;
Button btn;
public MyCtl()
{
this.Initialize();
}
protected override void Dispose(bool disposing)
{
base.Dispose(disposing);
}
private void Initialize()
{
this.SuspendLayout();
this.lbl = new Label();
this.lbl.Left = 10;
this.lbl.Top = 10;
this.lbl.Text =这里有一个标签;
this.Controls.Add(this.lbl);
this.btn = new Button();
this.btn.Left = 10;
this.btn.Top + = this.lbl.Bottom + 10;
this.btn.Text =我的按钮;
this.Controls.Add(this.btn);
this.ResumeLayout(false);
}
}
}
hi
i wanna use mouse enter and leave events for my user control.
i wanna changing user control forecolor when mouse enter,but don't work mouse enter event the user controls items,
my code user control is(this is for hover):
private void lbl_operation_MouseHover(object sender, EventArgs e)
{
lbl_operation.ForeColor = Color.Yellow;
}
how do i?
解决方案
Complete example for a UserControl:
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace Test_UserControl { public partial class Form1 : Form { MyCtl ctl = new MyCtl(); Color ctlDefaultColor; public Form1() { InitializeComponent(); InitOthers(); } private void InitOthers() { this.SuspendLayout(); // set ctl properties this.ctl.Left = 10; this.ctl.Top = 10; this.Controls.Add(ctl); this.ctl.MouseEnter += ctl_MouseEnter; this.ctl.MouseLeave += ctl_MouseLeave; this.ctlDefaultColor = this.ctl.ForeColor; this.ResumeLayout(false); this.PerformLayout(); } void ctl_MouseLeave(object sender, EventArgs e) { // restore backcolor this.ctl.ForeColor = this.ctlDefaultColor; } void ctl_MouseEnter(object sender, EventArgs e) { // set backcolor this.ctl.ForeColor = Color.Yellow; } } public class MyCtl : UserControl { Label lbl; Button btn; public MyCtl() { this.Initialize(); } protected override void Dispose(bool disposing) { base.Dispose(disposing); } private void Initialize() { this.SuspendLayout(); this.lbl = new Label(); this.lbl.Left = 10; this.lbl.Top = 10; this.lbl.Text = "There exists a label here"; this.Controls.Add(this.lbl); this.btn = new Button(); this.btn.Left = 10; this.btn.Top += this.lbl.Bottom + 10; this.btn.Text = "My Button"; this.Controls.Add(this.btn); this.ResumeLayout(false); } } }
And documentation: UserControl Class[^]
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