键盘箭头任务的代码 [英] code for the keyboard arrows tasks

问题描述

大家好
我正在开发一个项目，其中一部分涉及键盘箭头(左，右，上和下)，每个按钮有4个按钮，用于执行特定箭头的任务.

hi all
i''m working on a project, there is a part of it concerning of keyboard arrows(left, right, up and down), and there is 4 buttons each button do the task of a specific arrow.
what is the code to let the button do the task for the arrow?

推荐答案

您知道吗，取决于获得焦点的控件，箭头键是什么?他们可能已经执行或尚未执行特定操作?我们必须知道您要完成的工作，然后才能为您提供准确的问题答案.

编辑====================

将事件处理程序添加到您的窗体中以进行keydown和keyup，并在这些处理程序中确定键是否为箭头键.请记住，标准键盘上有两个箭头键.

Are you aware that depending on the control that''s got focus, the arrow keys may or may not already have a specific action they perform? We have to know what you''re trying to accomplish before we can give you a precise answer to your question.

EDIT ======================

Add event handlers to your form for keydown and keyup, and inside those handlers, determine if the keys are arrow keys. Remember, there are two sers of arrow keys on a standard keyboard.

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