You are here: GdPicture.NET > Documentation > Classes > GdPictureImaging Class > GdPictureImaging Methods > TWAIN Features > TwainGetContrast Method
Collapse All
logo.gif
ContentsIndexHome
PreviousUpNext
GdPictureImaging.TwainGetContrast Method
Related Topics  See Also  Send Feedback

Returns the current contrast.

C#
public int TwainGetContrast();
Visual Basic
Public Function TwainGetContrast() 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.

Related Topics
See Also
What do you think about this topic? Send feedback!
Copyright (c) 2009-2011 www.gdpicture.com. All rights reserved.