IDiaDataSource

Initiates access to a source of debugging symbols.

IDiaDataSource : IUnknown

Methods in Vtable Order

The following table shows the methods of IDiaDataSource.

Method	Description
IDiaDataSource::get_lastError	Retrieves the file name for the last load error.
IDiaDataSource::loadDataFromPdb	Opens and prepares a program database (.pdb) file as a debug data source.
IDiaDataSource::loadAndValidateDataFromPdb	Opens and verifies that the program database (.pdb) file matches the signature information provided; prepares the .pdb file as a debug data source.
IDiaDataSource::loadDataForExe	Opens and prepares the debug data associated with the .exe/.dll file.
IDiaDataSource::loadDataFromIStream	Prepares the debug data stored in a program database (.pdb) file accessed through an in-memory data stream.
IDiaDataSource::openSession	Opens a session for querying symbols.

Remarks

A call to one of the load methods of the IDiaDataSource interface opens the symbol source. A successful call to the IDiaDataSource::openSession method returns an IDiaSession interface that supports querying the data source. If the load method returns a file-related error then the IDiaDataSource::get_lastError method return value contains the file name associated with the error.

Notes for Callers

This interface is obtained by calling the CoCreateInstance function with the class identifier CLSID_DiaSource and the interface ID of IID_IDiaDataSource. The example shows how this interface is obtained.

Example

IDiaDataSource* pSource;
HRESULT hr = CoCreateInstance(CLSID_DiaSource,
                              NULL,
                              CLSCTX_INPROC_SERVER,
                              IID_IDiaDataSource,
                              (void**) &pSource);
if (FAILED(hr))
{
    // Report error and exit
}

Requirements

Header: Dia2.h

Library: diaguids.lib

DLL: msdia80.dll

See Also

Other Resources

Interfaces (Debug Interface Access SDK)