SAMPLE: Dbctl.exe Using ODBC in an ActiveX Control

ID: Q152534

The information in this article applies to:

The Microsoft Foundation Classes (MFC), included with:
- Microsoft Visual C++, 32-bit Editions, versions 4.0, 4.1

SUMMARY

DBCTL demonstrates a way to use ODBC in an ActiveX Control (OLE Control). A Visual C++ and a Visual Basic client application are included as part of this sample. The Visual C++ client is called DBUSR, the Visual Basic client is called DBVBUSR.

The following file is available for download from the Microsoft Software Library:

Dbctl.exe

For more information about downloading files from the Microsoft Software Library, please see the following article in the Microsoft Knowledge Base:

Q119591 How to Obtain Microsoft Support Files from Online Services

NOTE: Use the -d option when running DBCTL.EXE to decompress the file and recreate the proper directory structure.

MORE INFORMATION

DBCTL creates and opens a Class Wizard-configured CRecordset object from within the virtual override of COleControl::OnSetClientSite. The CRecordset- derived object is configured to the COURSE table of the STDREG32.MDB that comes with the sample.

The CRecordset-derived object is closed from within its own destructor. The CRecordset object is destructed with a call to the delete operator from within the COleControl derived class destructor.

The control exposes one method, a DisplayRecords method, that simply lists the contents of the recordset in the control.

The OLE Control subclasses a listbox. The string items are added to the listbox by using SendMessage.

The DBUSR.EXE and DBVBUSR.EXE demonstrate using the custom control.

Additional query words:


Keywords          : kbfile kbprg kbsample kbDatabase kbMFC kbODBC kbVC 
Version           : 4.0 4.1
Platform          : NT WINDOWS 
Issue type        :

Last Reviewed: August 8, 1999