Hello, I've been trying to get the viewer working to no avail...
First of all, the python code works fine (both the non-XML and XML tutorial
code). Using the latest 0.6.1 Win32 binaries, Visual Studio .Net 2003.
1. When I run C++ code on the same XML file as the python script, the viewer
crashes. In Debug mode it reports that there is "Damage after normal block"
(heap corruption)
I've traced the crash to the following line:
boost::shared_ptr<mapnik::Map> map(new mapnik::Map(width,height));
In particular, it's the "new mapnik::Map(width, height));" statement that
causes the crash. Stepping through in debug mode didn't get me anywhere.
If I instead say mapnik::Map map(width, height); then there is no error.
Attaching Windows Debugger to the viewer process results in the following:
mapnik!mapnik::Map::Map+0x96:
Missing image name, possible paged-out or corrupt data.
2. I know that the viewer doesn't even try to load the XML/shape files yet, but
in debug mode I see this:
'viewer.exe': Loaded 'C:\mapnik_0_6_1\lib\mapnik\input\shape.input', No symbols
loaded.
'viewer.exe': Unloaded 'C:\mapnik_0_6_1\lib\mapnik\input\shape.input'
It's unloading the shape.input file... will this be a problem?
As a side note, rundemo.cpp also crashes, but on the following line:
m.insert_style("provinces",provpoly_style);
I am starting to wonder whether I've set up third party libs correctly... or
maybe it's an issue with linking to the mapnik lib. I tried compiling mapnik
from source, but abandoned the idea after running into many missing
dependencies and "inconsistent DLL-linkage" problems. Please let me know if
anyone has any ideas as to why this might be happening in my build.
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