See Also Examples Applies To
Returns the number of available contrast values which can be used by the opened source in its current configuation.
Syntax
object.TwainGetAvailableContrastCount ()
The TwainGetAvailableContrastCount syntax has these parts:
| Part | Description |
| object | Required. An object expression that evaluates to an object in the Applies To list. |
Returns
Long. If Success, non zéro: The number of availables contrast values. Else 0 if fail. Use TwainGetLastResultCode() and TwainGetLastConditionCode() methods for diagnosing the error.
Remarks
Before using this method check that the TWAIN state is >= 4 (TWAIN_SOURCE_OPEN)
To get the TWAIN state, use the TwainGetState() method.
Category
TWAIN Capability