DTWAIN_GetSourceUnitEx

The DTWAIN_GetSourceUnitEx gets the current unit of measure used by a Source.

DTWAIN_BOOL DTWAIN_GetSourceUnit ( DTWAIN_SOURCE Source );

Parameters

Source

Return Values

If successful, the current unit of measure is returned. On failure, -1 is returned. Call DTWAIN_GetLastError() to get extended information.

Comments

The DTWAIN_GetSourceUnitEx function performs the same functionality as DTWAIN_GetSourceUnit, with the difference being that the unit of measure is returned as a LONG instead of the user providing a pointer to a LONG as a parameter.

TWAIN State Transitions

The Source must be in State 4 or higher.

Prerequisite Function Call(s)

DTWAIN_SysInitialize

DTWAIN Source Selection Function