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Problem loading .x files

Started by Brobanx Dec 1, 2001 at 12:32 PM 1 reply 200+ views

Original Post

Dec 1, 2001 at 12:32 PM

I''m loading a .x file into my program, and the following code gives me an access violation during the dxFData->GetType(&guidDataType) call. I''ve tried changing it around a lot and I''m not sure why guidDataType is corrupt and unusable in the function. Anyone who knows about this sorta stuff, I''d appreciate any help I can get.

  
	IDirectXFile *dxF;
	if ( DXFILE_OK != DirectXFileCreate(&dxF) )
		return ERR_BADFILE;

	IDirectXFileEnumObject *dxFEnumObject;

	if ( DXFILE_OK != dxF->CreateEnumObject(strFilename, DXFILELOAD_FROMFILE, 
			&dxFEnumObject) )
		return ERR_BADFILE;

	HRESULT hr;
	IDirectXFileData *dxFData;
	while(1) {
		hr = dxFEnumObject->GetNextDataObject(&dxFData);
		if ( hr == DXFILEERR_NOMOREOBJECTS )
			break;

		else if ( hr == DXFILEERR_BADVALUE ) {
			break; return ERR_BADFILE;

		} else {
			const GUID *guidDataType;
			if ( DXFILE_OK  != dxFData->GetType(&guidDataType) ) {
				break; return ERR_BADFILE;
			}
		}
	}

Brobanx

Author

Brobanx

Dec 1, 2001 at 2:38 PM

Ok, it turns out that the call to GetNextDataObject is not succeeding, so I changed the code a bit to handle that, but now I have to figure out WHY that function is not working, it''s VERY strange, because the DX docs say it can only return DXFILE_OK, DXFILEERR_NOMOREOBJECTS, and DXFILEERR_BADVALUE, but the call to GetNextDataObject is returning NEITHER of these values!!!

  
	//////////////////////////////////////////////////////////

	// load the data from the X file, return with any errors.

	if ( DXFILE_OK != DirectXFileCreate(&dxF) )
		return ERR_BADFILE;

	if ( DXFILE_OK != dxF->CreateEnumObject(strFilename, DXFILELOAD_FROMFILE, 
			&dxFEnumObject) )
		return ERR_BADFILE;

	while(1) {
		hr = dxFEnumObject->GetNextDataObject(&dxFData);
		if ( SUCCEEDED(hr) ) {
			if ( DXFILE_OK  != dxFData->GetType(&guidDataType) )
				return ERR_BADFILE;
		} else {
			if ( hr == DXFILEERR_NOMOREOBJECTS )
				break;
			else return ERR_BADFILE;
		}
	}

Jim Adams

Dec 2, 2001 at 12:04 AM

You need to free the dxFData object when doen after the call to GetNextDataObject. To break the loop, just use the FAILED macro instead of checking for exacts error codes.

Jim Adams

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