Drawing on a Drawing Layer that has been removed does not generate an error about mapwingis HOT 5 CLOSED

This is directly related to #28 .. my problem was the ClearDrawing was removing the layer but no error generated drawing to a nonexistent drawing layer.

So this code immediately after drawing on the layer was giving

            Dim b = Map_Nav.LastErrorCode
            Dim c = Map_Nav.get_ErrorMsg(Map_Nav.LastErrorCode)

b=1202
c="No Error"

If the layer was destroyed, then there should be an error generated ..

from mapwingis.

Did you have a look at the examples mentioned here: http://www.mapwindow.org/documentation/mapwingis4.9/group__map__drawing__layers.html#gacbd4270e2ee82c97def2d169f54bb518

from mapwingis.

Yes, I used them .. If I just add the layer I can draw, if I clear the layer, then it will not draw. Drawing on a nonexistant layer (after clearing it) returns error code 1202 with Description "No Error"

from mapwingis.

Is this still an issue with the latest version of MapWinGIS?

I'm closing this issue.
If needed you can repost at our MapWinGIS forum

from mapwingis.

This is no longer an issue with the latest code. When drawing to a removed (Cleared) drawing layer, the call returns -1, as it should, and the error code/string indicates an invalid layer handle.

from mapwingis.