DTWAIN_EnumLightSources

The DTWAIN_EnumLightSources function returns the available sources of light that the TWAIN driver can manage.

DTWAIN_BOOL DTWAIN_EnumLightSources (

DTWAIN_SOURCE	Source,
LPDTWAIN_ARRAY	lpLightSources );

Parameters

Source

Specifies an open TWAIN Source.

lpLightSources

A pointer to a DTWAIN_ARRAY that on return will be filled with the available light sources that are supported.

Return Values

If supported, TRUE is returned. Otherwise FALSE is returned.

Comments

The DTWAIN_EnumLightSources function takes the open Source Source, and returns to the DTWAIN_ARRAY pointed to by lpLightSources a list of the supported light sources. The light source will represent the color of the lamp used to acquire an image. A list of the possible values stored in the DTWAIN_ARRAY are found in Light Source Constants. The returned DTWAIN_ARRAY is of type DTWAIN_ARRAYLONG.

TWAIN State Transitions

The source must be opened in State 4

Prerequisite Function Call(s)

DTWAIN_SysInitialize

DTWAIN Source Selection Function