Problem Reading blob field
Posted: Wed 08 Jun 2005 17:42
I am having troubles reading data from a Blob field on a Query.
The following test code excutes, the first three lines do as they should, the actually Read method of the blob acts like Write though.
TBlob *Test = m_pQry->GetBlob("Pins"); // Works
AnsiString test = m_pQry->FieldByName("Pins")->AsString; // Works
m_pQry->GetBlob("Pins")->SaveToFile("c:\Test.txt"); // Works
iBytes = Test->Read(0, 1000, m_pPinBlob); // Sets size of blob to 1000 blanks it (as if its doing a write)
The following test code excutes, the first three lines do as they should, the actually Read method of the blob acts like Write though.
TBlob *Test = m_pQry->GetBlob("Pins"); // Works
AnsiString test = m_pQry->FieldByName("Pins")->AsString; // Works
m_pQry->GetBlob("Pins")->SaveToFile("c:\Test.txt"); // Works
iBytes = Test->Read(0, 1000, m_pPinBlob); // Sets size of blob to 1000 blanks it (as if its doing a write)