Before Using Windows CSV

The following Windows extensions are of particular importance and should be reviewed before using Windows CSV:

WinAsyncCSV

Provides an asynchronous entry point for TRANSFER_MS_DATA only. If used for any other verb, the behavior will be synchronous. Use this extension instead of the blocking version of the verb if you run your application under Microsoft® Windows® version 3.x.

When the asynchronous operation is complete, the application's window hWnd receives the message returned by RegisterWindowMessage with "WinAsyncCSV" as the input string. The wParam argument contains the asynchronous task handle returned by the original function call. The lParam argument contains the original verb control block (VCB) pointer and can be dereferenced to determine the final return code.

If the function returns successfully, a "WinAsyncCSV" message is posted to the application when the operation completes or the conversation is canceled.

WinCSVCleanup

Terminates and deregisters an application from a Windows CSV implementation.

Important An application must call this function to deregister itself from the Windows CSV implementation.

WinCSVStartup

Allows an application to specify the version of Windows CSV required and to retrieve details of the specific CSV implementation.

Important An application must call this function to register itself with a Windows CSV implementation before issuing any further Windows CSV calls.