C＃如何在按住鼠标按钮时循环 [英] C# how to loop while mouse button is held down

问题描述

你能指出我正确的方向吗？我正在尝试在窗体按钮被按下时触发一个循环。

  //伪代码
按（button1）
 value1 + = 1 
  

然后当按钮被释放时，当然会停止循环

解决方案

为避免使用线程，您可以添加计时器组件在您的窗体/控件上，只需启动鼠标，并将其禁用。然后把你通常放在循环中的代码放在Timer_Tick事件中。如果要使用System.Timers.Timer，可以改用Timer.Elapsed事件。

示例（使用System.Timers.Timer）：

  Timer = System.Timers.Timer; 
使用Systems.Timers; 
使用System.Windows.Forms; // WinForms示例
 private static Timer loopTimer; 
 private Button formButton; 
 public YourForm（）
 {
 //循环定时器
 loopTimer = new Timer（）; 
 loopTimer.Interval = 500; / interval（以毫秒为单位）
 loopTimer.Enabled = false; 
 loopTimer.Elapsed + = loopTimerEvent; 
 loopTimer.AutoReset = true; 
 // form button 
 formButton.MouseDown + = mouseDownEvent; 
 formButton.MouseUp + = mouseUpEvent; 
} 
 private static void loopTimerEvent（Object source，ElapsedEventArgs e）
 {
 //做任何你想要发生的事情，点击按钮
} 
 private static void mouseDownEvent（object sender，MouseEventArgs e）
 {
 loopTimer.Enabled = true; 
} 
 private static void mouseUpEvent（object sender，MouseEventArgs e）
 {
 loopTimer.Enabled = false; 
} 
  

Can you point me in the right direction? I'm trying to get a loop to trigger while the form button is depressed.

//pseudocode
While (button1 is pressed)
value1 += 1

And then of course stop looping when the button is released

解决方案

To avoid using threads you can add a Timer component on your form/control and simply enable it on mouse down and disable it on mouse up. Then put the code you would normally put inside the loop in the Timer_Tick event. If you want to use System.Timers.Timer you can use the Timer.Elapsed event instead.

Example (using System.Timers.Timer):

using Timer = System.Timers.Timer;
using Systems.Timers;
using System.Windows.Forms;//WinForms example
private static Timer loopTimer;
private Button formButton;
public YourForm()
{ 
    //loop timer
    loopTimer = new Timer();
    loopTimer.Interval = 500;/interval in milliseconds
    loopTimer.Enabled = false;
    loopTimer.Elapsed += loopTimerEvent;
    loopTimer.AutoReset = true;
    //form button
    formButton.MouseDown += mouseDownEvent;
    formButton.MouseUp += mouseUpEvent;
}
private static void loopTimerEvent(Object source, ElapsedEventArgs e)
{
    //do whatever you want to happen while clicking on the button
}
private static void mouseDownEvent(object sender, MouseEventArgs e)
{
    loopTimer.Enabled = true;
}
private static void mouseUpEvent(object sender, MouseEventArgs e)
{
    loopTimer.Enabled = false;
}       

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