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阅读：2103回复：8
[求助]请教ToMapPoint问题。
<P>请问：</P>
<P> Dim p as point </P> <P> Dim str1 as string: dim str2 as string</P> <P> set p=map1.ToMapPoint(100,200)</P> <P> str1=p.x : str2=p.y</P> <P> 为什么str1!=100 ,str2!=200??</P> <P> 请哪位大侠把ToMapPoint讲讲，英文的帮助看了半天也没有深刻理解。谢谢！ </P> |
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1楼#
发布于：2004-08-28 17:39
<P>系统坐标和地图坐标、系统距离和地图距离是两回事</P><P>tomappoint（x，y）就是把系统坐标转化为地图坐标然后赋给一个mapobjects2.point 对象</P>
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2楼#
发布于：2004-08-30 08:13
相等才怪！
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3楼#
发布于：2004-08-30 09:12
因为100和200是屏幕坐标，tomappoint变为地图坐标了
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4楼#
发布于：2004-08-30 10:42
<P>谢谢，搞懂了。</P>
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5楼#
发布于：2004-09-03 14:17
tomappoint一般捕捉鼠标的信息吧
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6楼#
发布于：2004-09-06 10:52
<P>不一定是鼠标的信息，只是转换坐标，当然有可能坐标是当前的鼠标点。</P>
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7楼#
发布于：2004-09-14 14:47
数据类型都不一样
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8楼#
发布于：2004-09-14 15:45
<P>最好看看帮助文件．．．</P><P>Converts a point in control space to map coordinates.
</P><P>If you have changed the Scale units of your Map container: The ToMapPoint method is dependant upon the ScaleMode of the Map control's container. However, the internal control units of a Map control are Twips, and therefore the ToMapPoint converts units from Twips to Map units. In Visual Basic, if the Map control's container has a different ScaleMode, use the ScaleX and ScaleY methods to convert X and Y coordinates before using the ToMapPoint method. For more information on the ScaleX and ScaleY methods, see the Visual Basic online reference.</P> |
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