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>> <a href="../cbuilder.htm">C++ Builder</a> >> </small><font>具体而微的绘图程式</font>·OnMouseMove事件的处理</p>
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</font><p><font SIZE="2"></font><font color="#FF0000" SIZE="2">·02-02 OnMouseMove事件的处理</font></p><font SIZE="2">
<p> </p>
<p>在加上了<font SIZE="2">OnMouseDown</font>及<font SIZE="2">OnMouseUp</font>处理函式之後，我们只能画出一条条直线，若是我们想要以滑鼠画出不规则线段时，就必须再处理<font SIZE="2">OnMouseMove</font>事件，利用<font SIZE="2">OnMouseMove</font>事件，我们可以追纵到滑鼠移动的位置，简单的<font SIZE="2">OnMouseMove</font>事件处理函式如下：</p>
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<p>void __fastcall TForm1::FormMouseMove(TObject *Sender, TShiftState Shift, int X,</p>
<p>int Y)</p>
<p>{</p>
<p>Canvas->LineTo(X,Y);</p>
<p>}</p>
</font>
<p>此程式的意义即在於将滑鼠所经过的每个点，以线条连接起来，在加上OnMouseMove
事件处理函式之後，它的执行结果会变成图02：</p>
<p><img SRC="Image9.gif" WIDTH="348" HEIGHT="240">图02</p>
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<p> <font SIZE="2"><small><a href="../../../index.htm">首页</a> >> <a href="../../program.htm">程序设计</a>
>> <a href="../cbuilder.htm">C++ Builder</a> >> </small><font>具体而微的绘图程式</font></font>·OnMouseMove事件的处理</p>
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