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| GeoCommunity Mailing List |
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| Mailing List Archives |
| Subject: | GISList: Problem in setting the coordinate system of a new layer in MapX |
| Date: |
03/06/2002 05:07:03 PM |
| From: |
Shanmugam Ganeshkumar |
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Hello Listers,
I face problem in setting the cooordsys of a user draw layer in
MapX.There is function called GetCoordSys for CMapXLayer's object where
you can get the current coordsys but there is no function to set it.
The reason why I want my user draw layer's coordinate to be
changed to LatiLongi is that I need to draw a point at the longitude and
latitude specified by me in the user draw layer. The default CoordSys is
Map.NumericCoordSys but I want it to be Map.LatLongi.
For this what I did is that I got the CoordSys of a layer
already there(whose coordsys is LatiLongi) by means of
layer.GetCoordSys() whish returns a LPDISPATCH and pass it as argument
to layer1.AttachDispatch().But it is not working.
Can anyone find whats wrong in the logic or else provide alternate
solution for the problem.
=20
try {
m_ctrl_map.SetZoom(0.5):
CCMapXLayer layer1 =3D
m_ctrl_map.GetLayers().AddUserDrawLayer("My Layer",1):
CCMapXLayer layer2=3D m_ctrl_map.GetLayers().Item("USA"):
=09=09
layer1.AttachDispatch(layer2.GetCoordSys(),true):
m_ctrl_map.GetLayers().SetAnimationLayer(layer1):
}
catch (COleDispatchException *e) {
e->ReportError():
e->Delete():
}
catch (COleException *e) {
e->ReportError():
e->Delete():
}
Thanks for your time.
Ganesh
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