[Gdal-dev] geoTiff: set georef using metadata tags

[Gennady Khokhorin]

Hello, all.
I have a problem translating geoTiff tags values to prettyWKT and back.

I have char* raw data buffers for each GeoKeyDirectory, GeoDoubleParams and GeoASCIIParams.
How I can put those raw data in existing .tif?

GDALSetMetadataItem(hDataSet, "GeoKeyDirectory", tagValue, NULL) command handles string tagValue only.

Help, please!
Thanks in advance for any suggestions.
gok