C / C++ / MFC

double Tabel_Panelinfo(String^ item_id, String^ use, String^ type)
{	
	// returnwaarde initialiseren
	int dblID = 10;

	// Aanmaken logische naam voor connectie
	OleDbConnection^ myOleDbConnection = nullptr;
    try
    {
        // 1. Build OLE DB connection string for MS Access database
        OleDbConnectionStringBuilder^ connectionBuilder = gcnew OleDbConnectionStringBuilder();
        connectionBuilder->Provider = "Microsoft.Jet.OLEDB.4.0";
        connectionBuilder->DataSource = "D:\\Data\\Visual Studio 2005\\Projects\\VertexBDXML-RandekSPL728\\VertexBDXML-RandekSPL728\\Tabel-XML.mdb";
        
        // 2. Create OLE DB connection
        myOleDbConnection = gcnew OleDbConnection(connectionBuilder->ToString());
        
        // 3. Open OLE DB connection
        myOleDbConnection->Open();

		// 4. create OLE DB DataAdapter
		OleDbDataAdapter^ DataAdapter = gcnew OleDbDataAdapter("SELECT * FROM tblPanel", myOleDbConnection);

        // 4a. Attach FillError and RowUpdated event handlers
        DataAdapter->FillError += gcnew FillErrorEventHandler(MyEventHandler::FillError);
        DataAdapter->RowUpdated += gcnew OleDbRowUpdatedEventHandler(MyEventHandler::RowUpdated);

        // 5. Create DataSet
        DataSet^ myDataSet = gcnew DataSet();

		// 6. Dataset opvullen
		DataAdapter->MissingSchemaAction = MissingSchemaAction::Add;
        DataAdapter->Fill(myDataSet, "tblPanel");

		// 7. Waarde zoeken
		DataRow^ row = myDataSet->Tables["tblPanel"]->NewRow();
		// DataRow^ row = myDataSet->Tables["tblPanel"]->Rows->Find("1");
		if (row != nullptr)
		{
			// 8. Datavelden invullen
			// row["ID"] = dblID;
			row["item_id"] = item_id;
			row["use"] = use;
			row["type"] = Convert::ToInt16(type);
			// dblID = Convert::ToDouble(row["ID"]);

			// 9. Data updaten
			DataAdapter->Update(myDataSet, "tblPanel");
		}
    }
    catch(Exception^ e)
    {
		Console::WriteLine(e->Message);
    }
    finally
    {
        // Close OLE DB connection
        if ( myOleDbConnection != nullptr )
            myOleDbConnection->Close();
    }
	
	return dblID;
} 

<br />
DllA::SomeFunc(){<br />
char * pszBuffer = new char[100];<br />
...<br />
strcpy(pszBuffer, pszData);<br />
DllB::SomeOtherFunc(pszBuffer);<br />
...<br />
delete [] pszBuffer; << delete from dll where you allocated it originally.<br />
pszBuffer = NULL;<br />
...<br />
}

_CrtIsValidHeapPointer(const void * 0x00443270) line 1697<br />
_free_dbg_lk(void * 0x00443270, int 1) line 1044 + 9 bytes<br />
_free_dbg(void * 0x00443270, int 1) line 1001 + 13 bytes<br />
free(void * 0x00443270) line 956 + 11 bytes<br />
operator delete(void * 0x00443270) line 7 + 9 bytes<br />
std::allocator<char>::deallocate(void * 0x00443270, unsigned int 33) line 64 + 38 bytes<br />
std::basic_string<char,std::char_traits<char>,std::allocator<char> >::_Tidy(unsigned char 1) line 592<br />
std::basic_string<char,std::char_traits<char>,std::allocator<char> >::~basic_string<char,std::char_traits<char>,std::allocator<char> >() line 59 + 39 bytes<br />
CStartupManager::~CStartupManager() line 17 + 33 bytes<br />
InitApplication() line 18 + 18 bytes<br />
main(int 1, char * * 0x00441420) line 26