using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
namespace MyTextBox
{
public partial class MyTextBox : TextBox
{
bool isMouseClick = false;
public MyTextBox()
{
InitializeComponent();
}
protected override void OnMouseClick(MouseEventArgs e)
{
base.OnMouseClick(e);
//
isMouseClick = true;
isMouseLeave = false;
Refresh();//产生点击事件以后,重画控件,NET自己会调用OnPaint()方法
}
protected override void OnMouseLeave(EventArgs e)
{
base.OnMouseLeave(e);
//
isMouseClick = false;
Refresh();//鼠标离开以后,重画控件,NET自己会调用OnPaint()方法
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);//这里是 TextBox 原有的绘制代码
//下面可以绘制放大镜
if (isMouseClick)
{
//写绘制放大镜代码
}
}
}
}
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
namespace MyTextBox
{
public partial class MyTextBox : TextBox
{
bool isMouseClick = false;
public MyTextBox()
{
InitializeComponent();
}
protected override void OnMouseClick(MouseEventArgs e)
{
base.OnMouseClick(e);
//
isMouseClick = true;
isMouseLeave = false;
Refresh();//产生点击事件以后,重画控件,NET自己会调用OnPaint()方法
}
protected override void OnMouseLeave(EventArgs e)
{
base.OnMouseLeave(e);
//
isMouseClick = false;
Refresh();//鼠标离开以后,重画控件,NET自己会调用OnPaint()方法
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);//这里是 TextBox 原有的绘制代码
//下面可以绘制放大镜
if (isMouseClick)
{
//写绘制放大镜代码
}
}
}
}