On Apr 6, 2011, at 11:04 AM, canduc17 wrote:
> I have this incorrect code:
> try
> {
> myDataset = (GDALDataset *) GDALOpen( "myimg", GA_ReadOnly );
> }
> catch(int n)
> {
> cout << "File not existent!" << endl;
> return 14;
> }
>
You need to implement your own error handler if you want GDAL to throw
exceptions when it can open something.
The following example throws an error if there was a CE_Failure or CE_Fatal and
merely puts out the debug message if there is debug info.
> #include <gdal.h>
> #include <stdexcept>
> #include <sstream>
> #include <iostream>
> void CPL_STDCALL HobusGDALErrorHandler(CPLErr eErrClass, int err_no, const
> char *msg);
>
> void CPL_STDCALL HobusGDALErrorHandler(CPLErr eErrClass, int err_no, const
> char *msg)
> {
> std::ostringstream oss;
>
> if (eErrClass == CE_Failure || eErrClass == CE_Fatal) {
> oss <<"GDAL Failure number=" << err_no << ": " << msg;
> throw exception(oss.str());
> } else if (eErrClass == CE_Debug) {
> std::cout << "GDAL Debug: " << msg << std::endl;
> } else {
> return;
> }
> }
Hope this helps,
Howard_______________________________________________
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