The Tapi.dll module exports the TAPI functions used to develop TAPI client applications, such as outbound dialing telephony applications. TAPI functions and structures are defined in the Tapi.h header file.
TAPI functions are identified as asynchronous if they can return before making a call to the application callback function; otherwise, they are considered synchronous.
The following table shows the TAPI functions supported by Windows CE.
Function |
Description |
| lineAddProvider | Installs a new service provider |
| lineClose | Closes a specified line device |
| lineConfigDialogEdit | Displays a dialog box for a user to change configuration data for a line device |
| lineDeallocateCall | Frees system-allocated memory related to the call after the call has been dropped |
| lineDrop | Drops or disconnects a call |
| lineGetDevCaps | Returns the capabilities of a specified line device |
| lineGetDevConfig | Returns the default configuration of a specified line device |
| lineGetID | Retrieves a device identifier associated with the specified open line, address, or call |
| lineGetTranslateCaps | Returns the address of translation capabilities |
| lineInitialize | Initializes the TAPI line for use by invoking applications |
| lineMakeCall | Initiates outbound dialing, makes a call, and returns a handle |
| lineNegotiateAPIVersion | Negotiates the API version |
| lineOpen | Opens a specified line device for providing subsequent monitoring and control of the line |
| lineSetCurrentLocation | Sets the location used as the context for address translation |
| lineSetDevConfig | Sets the configuration of the specified medial stream device |
| lineSetStatusMessages | Specifies the status change on the line device or its addresses for which the application is notified |
| lineShutdown | Shuts down TAPI |
| lineTranslateAddress | Translates a specified address into a string format capable of being dialed |
| lineTranslateDialog | Displays a dialog box enabling a user to change the current location of a phone number to be dialed |
Note All TAPI functions return zero to signal success.