On Tuesday, 19 May 2015 at 17:31:07 UTC, Kelly wrote:
On Tuesday, 19 May 2015 at 16:33:00 UTC, CraigDillabaugh wrote:
On Tuesday, 19 May 2015 at 08:09:33 UTC, Suliman wrote:
modmap (C++) "<gdalwarper>";

import std.stdio;

void main()
{
        GDALDatasetH  hSrcDS, hDstDS;
        GDALAllRegister();
        writeln("hello");
}


error:
app.d(7): Error: undefined identifier GDALDatasetH
app.d(7): Error: undefined identifier GDALDatasetH
app.d(8): Error: undefined identifier GDALAllRegister

Perhaps you also need to include the GDAL headers, as I suspect gdalwarper doesn't define GDALDatasetH.


Hi Craig,

The method here is to actually 'import (C++) _;' since that '_' will make Calypso import all the global functions/variables/typedefs in gdalwarper.

This works for namespaces also, so if you have a namespace in a different example called MySpace, then calling 'import (C++) MySpace._;' will import all the functions/variables/typedefs in the namespace and make them accessible in your D file.

If you just have a single class in the MySpace namespace called 'myclass', and you would like to use it in your D program, then use 'import (C++) MySpace.myclass;' to import it. Then instantiate the class in D and use it from there.

Thanks,
Kelly

Kelly,

Just to clarify then. If gdalwarper.h includes gdal.h and GDALDatasetH is declared in gdal.h, then gdal.h gets imported too?

Craig

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