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GdPictureImaging.TwainGetBrightness Method
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Returns the current brightness.

C#
public int TwainGetBrightness();
Visual Basic
Public Function TwainGetBrightness() As Integer
Returns

If success: The TWAIN standard *says* that the range for this cap is -1000 ... +1000. If fail, returns -99999 -> 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.

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