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<title>给控件添加OnMouseLeave事件 </title>
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<div align="center" class="btitle">给控件添加OnMouseLeave事件 <br>
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<div align="center"><strong>grhunter </strong></div>
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摘 要</b>：如何给控件添加OnMouseLeave事件 <br>
<b> 关键字</b>：OnMouseLeave，鼠标 <br>
<b> 类 别</b>：VCL
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<span class="content"><br><br>需要在鼠标离开的时候得到通知吗？看看以下的代码，也许会有帮助。你可以把TImage换成其它控件。关键在于对CMMouseLeave消息的处理。<br><br>unit Main;<br>interface<br>uses<br> Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,<br> ExtCtrls;<br>type<br> TMyImage = class(TImage)<br> private<br> FOnMouseLeave: TNotifyEvent;<br> procedure CMMouseLeave(var Message: TMessage); message CM_MOUSELEAVE;<br> protected<br> public<br> published<br> property OnMouseLeave: TNotifyEvent read FOnMouseLeave write FOnMouseLeave;<br> end;<br><br>procedure Register;<br><br>implementation<br><br>procedure Register;<br>begin<br> RegisterComponents('Samples', [TMyImage]);<br>end;<br><br>procedure TMyImage.CMMouseLeave(var Message: TMessage);<br>begin<br> inherited;<br> if Assigned(FOnMouseLeave) then FOnMouseLeave(Self);<br>end;<br><br>end.</span>
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