DTWAIN_IsSourceOpen

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The DTWAIN_IsSourceOpen function determines whether a Source is opened for acquisitions.

DTWAIN_BOOL DTWAIN_IsSourceOpen ( DTWAIN_SOURCE Source );

Parameters

Source

Specifies a TWAIN Source.

Return Values

If the function succeeds, TRUE is returned. If the function fails FALSE is returned.

Comments

The DTWAIN_IsSourceOpen function returns TRUE if the Source is opened, FALSE otherwise.

An open Source is a Source that has been opened previously by selecting it, calling DTWAIN_OpenSource (TWAIN State 4 or higher), or is currently acquiring an image (State 6 and State 7). If the Source is not opened, FALSE is returned.

TWAIN State Transitions

None.

Prerequisite Function Call(s)

DTWAIN_SysInitialize