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DTWAIN_IsDeviceOnline |
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The DTWAIN_IsDeviceOnline function checks if a Source is online (ready to acquire images).
DTWAIN_BOOL DTWAIN_IsDeviceOnline ( DTWAIN_SOURCE Source );
Parameters Source Specifies an open TWAIN Source.
Return Value Returns TRUE if the Source is on-line, FALSE if device is off-line, the online status cannot be determined, or an error occurs.
Comments The DTWAIN_IsDeviceOnline function determines if a Source is on-line. It is up to the TWAIN Source to consider whether a Source is on or off line. An on-line Source usually means that the Source is ready to acquire images.
TWAIN State Transitions The source must be opened in State 4
Prerequisite Function Call(s)
DTWAIN Source Selection Function
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