你好：
请参考MSDN文档：
Control.CanFocus
属性
Visible 和
Enabled 属性都设置为
true，同时，控件必须为窗体，或者控件的最外层父控件必须为窗体。</sentencetext>
调用Control.Handle属性可以获取控件的句柄，如果控件句柄尚未创建的话，调用这个属性也会强制创建一个句柄，具体请参考MSDN文档。
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