求教键盘事件
我自己做了一个usercontrol,添加了一个基于usercontrol的键盘事件,但是在form   中使用这个控件的时候却键盘事件,这是为什么?求各位帮忙解答

------解决方案--------------------
protected override bool IsInputKey(Keys keyData) {
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/* 這裡需回傳true, 否則無法接收到方向鍵
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* MSDN:
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* Call the IsInputKey method to determine whether the key specified by the keyData
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* parameter is an input key that the control wants.
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* This method is called during window message preprocessing to determine whether
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* the specified input key should be preprocessed or sent directly to the control.
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* If IsInputKey returns true, the specified key is sent directly to the control.
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* If IsInputKey returns false, the specified key is preprocessed and only sent to
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* the control if it is not consumed by the preprocessing phase.
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* Keys that are preprocessed include the TAB, RETURN, ESCAPE, and the UP ARROW,
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* DOWN ARROW, LEFT ARROW, and RIGHT ARROW keys. */
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return true;
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}