DTWAIN_EnumCompressionTypesEx

The DTWAIN_EnumCompressionTypesEx function gets all of the possible compression methods that are available when a buffered image transfer is done.

DTWAIN_ARRAY DTWAIN_EnumCompressionTypesEx ( DTWAIN_SOURCE Source );

Parameters

Source

An open TWAIN Source.

Return Values

If successful, a DTWAIN_ARRAY that will store the Source's compression types. NULL is returned on failure. If the function fails, call DTWAIN_GetLastError() to get extended information.

Comments

The DTWAIN_EnumCompressionTypesEx function has the same functionality as DTWAIN_EnumCompressionTypes, except that the DTWAIN_ARRAY is returned to the caller instead of the caller providing a pointer to a DTWAIN_ARRAY 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