GdPictureImaging.TwainGetAvailableCapValuesCount Method

Returns the number of available values for the selected TWAIN capability which can be used with it by the opened source in its current configuration.

public int TwainGetAvailableCapValuesCount(
    TwainCapabilities Cap
);

Visual Basic

Public Function TwainGetAvailableCapValuesCount(
    ByVal Cap As TwainCapabilities
) As Integer

Parameters

Parameters	Description
Cap	A member of the TwainCapabilities enumeration.

Returns

If Success, non zero: Number of values available for the selected TWAIN capability. Else 0 if fail -> Use TwainGetLastResultCode() and TwainGetLastConditionCode() functions for diagnosing the error.

Remarks

Before using this function check that the TWAIN state is >= 4 (TWAIN_SOURCE_OPEN)

To get the TWAIN state, use the TwainGetState() function.