vb.net中的按钮keypress属性 [英] button keypress property in vb.net

问题描述

我想在按下按钮1的同时执行在按钮1 click事件中编写的代码.
当我释放按钮时，执行应该停止.

请告诉我可以通过文本框的哪种属性或方法来执行此操作.

谢谢.

解决方案

Anand，

您要执行在button_Click中编写的代码.是否要调用异步调用或同步调用，一旦执行button_Click方法，然后在执行Click方法后返回.

如果不想执行它们，则应改用button_MouseUp方法，MouseUp仅在释放按钮时执行.

您还应该将相同的事件附加到KeyUp，因为用户可能会使用键盘来单击按钮而不是鼠标.

希望您能消除疑问，如果不能，请向我们描述您的功能.

问候
Rushi

看看如何处理MouseDown和MouseUp事件-您可能还需要检查MouseMove或MouseLeave事件，并将代码从Click事件中删除，以使用常规方法. 如果要重复调用该例程，则可能还需要引入一个计时器. ".您应该创建自己的自定义控件，就像按钮一样，但是要使用较低级的键盘和鼠标事件来实现此类事件.不要从Button派生您的控件类，而从Control派生它.

—SA

I want to execute the code written in button 1 click event whilst button 1 is pressed.
When I release the button then execution should stop.

Please give me by which property or method of textbox I can perform this.

Thank you.

解决方案

Anand,

You want to execute code written in button_Click. Do you want to call an Asynchronous call or Synchronous call, once you execute button_Click method then it return after executing Click method.

If you don''t want to execute them then you should use button_MouseUp method instead, MouseUp only executes when button released.

You should also attach same Event to KeyUp as it may possible that user use keyboard to click button not mouse.

I hope you clear your doubt, if not please describe us what is your functionality.

Regards
Rushi

Look at handling the MouseDown and MouseUp events - you may also want to check for MouseMove or MouseLeave events and remove your code from the Click event to a general method.
You may also need to introduce a timer if you want the routine called repeatedly.

You cannot do it with a standard button, because a button does not expose events like "PressedDown" and "Released". You should create your own custom control looking like button but implementing such events using lower-level keyboard and mouse events. Don''t derive your control class from Button, derive it from Control.

—SA

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