examples/SysLibs/ResourceFiles/MultiRead2/MultiRead2.cpp

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Description:
This example shows how to use multiple resource files with cross-referenced
resources.  It depends on the resource file created for the MultiRead1 project.
It introduces a second resource file, MultiRead2, which contains an LLINK
to a resource defined in the MultiRead1 project. The important point to note is
that the effect of introducing this second resource file is minimal: just
another #include file; and the logic in doExampleL() would be identical whether
the LLINK pointed to another resource in the same file or a different file.� 
*/





#include "CommonToResourceFilesEx.h"
#include <multiread2.rsg> // user resources
#include "MultiRead.h"    // definition of multi-resource-reader class

// Do the example
void doExampleL()
        {
        _LIT(KFormat,"%S\n");

        // allocate multi-reader
        CMultipleResourceFileReader* multiReader =
                        CMultipleResourceFileReader::NewLC();

        // open resource file on the emulator(__WINS__  is defined for the Windows emulator)
        // (leave if error)
        #if defined(__WINS__)
        // add MultiRead1 version 23
        _LIT(KZSystemDataBasigbRsc,"Z:\\Resource\\apps\\MultiRead1.rsc");
        multiReader->AddResourceFileL(KZSystemDataBasigbRsc,23);
        // add MultiRead2 version 17
        _LIT(KZSystemDataBasiguRsc,"Z:\\Resource\\apps\\MultiRead2.rsc");
        multiReader->AddResourceFileL(KZSystemDataBasiguRsc,17);
        #endif

        // open a resource file on the target phone
        // ( __EPOC32__ is defined for all target hardware platforms regardless of processor type/hardware architecture)
        #if defined(__EPOC32__)
        // add MultiRead1 version 23
        _LIT(KCSystemDataBasigbRsc,"Z:\\Resource\\apps\\MultiRead1.rsc");
        multiReader->AddResourceFileL(KCSystemDataBasigbRsc,23);
        
        // add MultiRead2 version 17
        _LIT(KCSystemDataBasiguRsc,"Z:\\Resource\\apps\\MultiRead2.rsc");
        multiReader->AddResourceFileL(KCSystemDataBasiguRsc,17);
        #endif
        
        // read resource that returns a reference to another resource
        HBufC8* refBuffer=multiReader->AllocReadLC(R_USER_HELLOREF);
        TResourceReader theReader;
        theReader.SetBuffer(refBuffer);
        TInt referencedId=theReader.ReadInt32(); // treat resource as integer
        CleanupStack::PopAndDestroy(); // refBuffer
        // read the other resource
        HBufC8* dataBuffer=multiReader->AllocReadLC(referencedId);
        TResourceReader reader;
        reader.SetBuffer(dataBuffer);
        TPtrC textdata = reader.ReadTPtrC();

        // write string to test console
        console->Printf(KFormat, &textdata);
        // clean up data buffer
        CleanupStack::PopAndDestroy(); // finished with dataBuffer
        // cleanup multi-reader
        CleanupStack::PopAndDestroy(); // multi-reader
        }

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