phoneSetDisplay

The phoneSetDisplay function causes the specified string to be displayed on the specified open phone device.

LONG phoneSetDisplay(

HPHONE hPhone,
DWORD dwRow,
DWORD dwColumn,
LPCSTR lpsDisplay,
DWORD dwSize
);

Parameters

hPhone

A handle to the open phone device. The application must be the owner of the phone.

dwRow

The row on the display where the new text is to be displayed.

dwColumn

The column position on the display where the new text is to be displayed.

lpsDisplay

A pointer to the memory location where the display content is stored. The display information must have the format specified in the dwStringFormat field of the phone's device capabilities.

dwSize

The size in bytes of the information pointed to by lpsDisplay.

Return Values

Returns a positive request ID if the function will be completed asynchronously or a negative error number if an error has occurred. The dwParam2 parameter of the corresponding PHONE_REPLY message is zero if the function is successful or it is a negative error number if an error has occurred. Possible return values are:

PHONEERR_INVALPHONEHANDLE, PHONEERR_OPERATIONUNAVAIL, PHONEERR_NOTOWNER, PHONEERR_OPERATIONFAILED, PHONEERR_INVALPHONESTATE, PHONEERR_UNINITIALIZED, PHONEERR_INVALPOINTER, PHONEERR_NOMEM, PHONEERR_INVALPARAM, PHONEERR_RESOURCEUNAVAIL.

Remarks

The specified display information is written to the phone's display, starting at the specified positions. This operation overwrites previously displayed information. If the amount of information exceeds the size of the display, the information will be truncated. The amount of information that can be displayed is at most (dwNumRows * dwNumColumns) elements in size. dwNumRows and dwNumColumns are available in the PHONECAPS structure, which is returned by phoneGetDevCaps; they are zero-based.

See Also

PHONE_REPLY, PHONECAPS, phoneGetDevCaps

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