GdPicture14 Namespace / GdPictureImaging Class / TwainGetThreshold Method

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TwainGetThreshold Method (GdPictureImaging)
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Returns the dividing line between black and white. This is the value the Source will use to threshold, if needed, when scanning B&W image.
Public Function TwainGetThreshold() As Integer
public int TwainGetThreshold()
public function TwainGetThreshold(): Integer; 
public function TwainGetThreshold() : int;
public: int TwainGetThreshold(); 
int TwainGetThreshold(); 

Return Value

Current threshold value between 0 and 255. -1 If it is not supported by the current device (Use TwainGetLastResultCode() and TwainGetLastConditionCode() methods for diagnosing the error.)
Before using this method check that the TWAIN state is >= 4 (TWAIN_SOURCE_OPEN) To get the TWAIN state, use the TwainGetState() method.
See Also