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<TD align=right><A href="http://www.csdn.net/">CSDN</A> - <A
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<TD><B> MapX之VC设置非地球坐标系</B> yesgis（转贴）
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<TD width=500> MapX专家 MapX</TD></TR>
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<TD align=middle bgColor=#003399 height=10><FONT
color=#ffffff>出处</FONT></TD>
<TD height=10> <A
href="http://www.51gis.com/">http://www.51gis.com/</A></TD></TR>
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<P>【功能】：MapX之VC设置非地球坐标系<BR>【环境】：vc6+mapx4.5+win2k+sp3<BR>【提示】：CoordSys.set设置非地球坐标系时，必须定义坐标范围<BR>【出处】：<A
href="http://www.51gis.com/">http://www.51gis.com/</A></P>
<P><BR>int CMyGIsView::OnCreate(LPCREATESTRUCT lpCreateStruct)
<BR>{<BR>if (CView::OnCreate(lpCreateStruct) == -1)<BR>return
-1;<BR><BR>// create map with default size<BR>// resize message will
cause it to be<BR>// size to the client area of the
view<BR>m_ctrlMapX.Create(NULL, WS_VISIBLE, CRect(0,0,100,100),
this,
IDC_MAP);<BR>m_ctrlMapX.SetGeoSet("Mygst.gst");<BR><BR>//－－－－－－－以下代码设置nonearth（meters)坐标系－－－－－－－－－－－－－<BR>CMapXRectangle
Rect;<BR>CMapXCoordSys CurrentCoordsys;<BR>COptionalVariant vEmpty;
<BR>VARIANT
MapUnit,MapBounds;<BR>if(!Rect.CreateDispatch(Rect.GetClsid()))<BR>{<BR>TRACE0("Could
not Create object"); <BR>}
<BR>if(!CurrentCoordsys.CreateDispatch(CurrentCoordsys.GetClsid()))
{<BR>TRACE0("Could not Create object"); <BR>} <BR>try {
<BR>MapUnit.vt=VT_I4;<BR>MapUnit.lVal=miUnitMeter;
<BR>//设置坐标范围(MBR).为求一致，这里取当GeosetManager中设置为non-earth(meters)时,<BR>//gst文件中的参数"\GEOSET\MBR\LOWERLEFT"
,"\GEOSET\MBR\UPPERRIGHT"。<BR>Rect.Set(-2165.540090678837,
9841.99939777,46782.41871417205,41026.85331473999);<BR><BR>MapBounds.vt=VT_DISPATCH;<BR>MapBounds.pdispVal=Rect.m_lpDispatch;<BR>MapBounds.pdispVal->AddRef();
<BR>CurrentCoordsys.Set(0, vEmpty,MapUnit, vEmpty, vEmpty,
vEmpty,vEmpty, vEmpty, vEmpty, vEmpty, vEmpty, vEmpty,MapBounds,
vEmpty);<BR>m_ctrlMapX.SetNumericCoordSys(CurrentCoordsys.m_lpDispatch);<BR>m_ctrlMapX.SetDisplayCoordSys(m_ctrlMapX.GetNumericCoordSys().m_lpDispatch);
<BR><BR>} catch (COleDispatchException *e)
{<BR>e->ReportError();<BR>e->Delete(); <BR>} catch
(COleException *e)
{<BR>e->ReportError();<BR>e->Delete();<BR>}<BR>//------------------------------------------------<BR><BR>return
0;<BR>}</P>
<P> </P>
<P>==================MapX专家论坛(<A
href="http://www.51gis.com/">http://www.51gis.com/</A>)===================<BR></P><BR></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE><BR>
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