TUISPI_providerGenericDialogData

The TUISPI_providerGenericDialogData function in the UI DLL is called when the service provider sends a LINE_SENDDIALOGINSTANCEDATA message. The service provider uses this to spontaneously update information in dialog boxes created in the application context in conjunction with the processing of particular asynchronous TSPI functions. This function is called from a separate thread from that in which TSPI_providerGenericDialogData is executing. The UI DLL should not block the thread in which this function is called, but should process the data and return immediately (posting a message to the dialog box if necessary).

Implementation is mandatory if TUISPI_providerGenericDialog is exported.

LONG TSPIAPI TUISPI_providerGenericDialog(
  HTAPIDIALOGINSTANCE htDlgInst,  
  LPVOID lpParams,                
  DWORD dwSize                    
);

Parameters

htDlgInst

The opaque identifier binding the association of this instance of the function to a particular request from the service provider.

lpParams

Pointer to a memory area used to hold a parameter block. The contents of this parameter block are specific to the service provider and its associated UI DLL. The conveyance of data through this parameter block is one-way to the UI DLL; changes made to the parameter block are not reflected back in the service provider. If this parameter is set to NULL, this is a request to close the dialog box immediately and clean up (TUISPIDLLCALLBACK should not be invoked during this cleanup). TAPI invokes this function with lpParams set to NULL to force dialog box cleanup under certain circumstances, such as an application calling lineShutdown with a dialog box still active.

dwSize

The size in bytes of the parameter block.

Return Values

Returns zero if successful, or one of these negative error values:

LINEERR_INVALPARAM, LINEERR_NOMEM, LINEERR_OPERATIONFAILED.

Requirements

  Windows NT/2000: Requires Windows NT 4.0 SP3 or later.
  Windows 95/98: Requires Windows 95 or later.
  Version: Requires TAPI 2.0 or later.
  Header: Declared in Tspi.h.

See Also

LINE_SENDDIALOGINSTANCEDATA, TUISPIDLLCALLBACK, lineShutdown