TwainGetContrast Method (GdPictureImaging)

In This Topic

Returns the current contrast.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Function TwainGetContrast() As Integer

public int TwainGetContrast()

public function TwainGetContrast(): Integer;

public function TwainGetContrast() : int;

public: int TwainGetContrast();

public:
int TwainGetContrast();

Return Value

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

Reference

GdPictureImaging Class
GdPictureImaging Members
TwainGetState Method
TwainGetLastConditionCode Method
TwainGetLastResultCode Method