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<title>如何阻止用户移动窗体或改变它的大小 </title>
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<div align="center" class="btitle">如何阻止用户移动窗体或改变它的大小 <br>
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摘 要</b>：如何阻止用户移动窗体或改变它的大小 <br>
<b> 关键字</b>：WM_WINDOWPOSCHANGING <br>
<b> 类 别</b>：API
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<span class="content"> 捕捉 Windows WM_WINDOWPOSCHANGING信息和 WindowPos 结构的‘or’标记，它把预先定义了的常数SWP_NOMOVE 和 SWP_NOSIZE 作为信息的lparam参数。<Br><Br><Br>type<Br> TForm1 = class(TForm)<Br> private<Br> procedure WMPosChange(var Message: TWMWINDOWPOSCHANGING);<Br> message WM_WINDOWPOSCHANGING;<Br> public<Br> end;<Br><Br>var<Br> Form1: TForm1;<Br><Br>implementation<Br><Br>{$R *.DFM}<Br><Br>procedure Tform1.WMPosChange(var Message: TWMWINDOWPOSCHANGING);<Br>begin<Br> PWindowPos(TMessage(Message).lParam).Flags :=<Br> PWindowPos(TMessage(Message).lParam).Flags or<Br> SWP_NOMOVE or SWP_NOSIZE;<Br>end;<Br><Br></span>
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