如何开发一个背景颜色可以闪烁的Button的控件
如何开发一个Button控件使背景颜色可以闪烁?
------解决方案--------------------处理它的Paint事件,添加一个Timer定时指定要绘制的颜色让Button绘制
------解决方案--------------------你这样来做:
class ButtonEx:Button
{
private Timer timer = new Timer();
public ButtonEx()
{
timer.Enabled = true;
timer.Interval = 500;
timer.Tick += new EventHandler(timer_Tick);
}
void timer_Tick(object sender, EventArgs e)
{
if (this.BackColor == Color.Transparent)
{
this.BackColor = Color.Green;
}
else
{
this.BackColor = Color.Transparent;
}
}
protected override void Dispose(bool disposing)
{
this.timer.Enabled = false;
this.timer.Dispose();
base.Dispose(disposing);
}
}
------解决方案--------------------在void timer_Tick(object sender, EventArgs e)
里面不直接更新背景,改成用delegate 和 event来更新
尝试一下怎样
------解决方案--------------------问题1、控件未加载完毕;
2、应该在线程UI里修改,
下面没有在UI里修改,直接用时钟修改,但可以用
using System;
using System.Windows.Forms;
using System.Drawing;
namespace LessonManager
{
/// <summary>
/// Class3 的摘要说明。
/// </summary>
class ButtonEx:Button
{
private Timer timer = new Timer();
public delegate void ChangColor(Color c);
public ButtonEx()
{
timer.Enabled = true;
timer.Interval = 500;
timer.Tick += new EventHandler(timer_Tick);
}
void timer_Tick(object sender, EventArgs e)
{
if (this.BackColor == Color.Transparent)
{
this.BackColor=Color.Green;
}
else
{
this.BackColor=(Color.Transparent);
}
}
private void Changing(Color c)
{
this.BackColor=c;
}
protected override void Dispose(bool disposing)
{
this.timer.Enabled = false;
this.timer.Dispose();
base.Dispose(disposing);
}
}
}