phoneSetDisplay
The phoneSetDisplay
function causes the specified string to be displayed on the specified open
phone device.
LONG phoneSetDisplay(
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HPHONE hPhone, |
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DWORD dwRow, |
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DWORD dwColumn, |
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LPCSTR lpsDisplay, |
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DWORD dwSize |
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); |
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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