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GdPicture14 Namespace / GdPictureImaging Class / TwainGetAvailableContrastCount Method

TwainGetAvailableContrastCount Method (GdPictureImaging)

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Returns the number of available contrast values which can be used by the opened source in its current configuration.
Syntax
'Declaration
 

Public Function TwainGetAvailableContrastCount() As Integer
public int TwainGetAvailableContrastCount()
public function TwainGetAvailableContrastCount(): Integer; 
public function TwainGetAvailableContrastCount() : int;
public: int TwainGetAvailableContrastCount(); 
public:
int TwainGetAvailableContrastCount();

Return Value

If Success, non zero: The number of available 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.
See Also

Reference

GdPictureImaging Class
GdPictureImaging Members
TwainGetState Method
TwainGetAvailableContrastNo Method
TwainGetLastConditionCode Method
TwainGetLastResultCode Method