TwainGetCapCurrentNumeric Method (GdPictureImaging)

In This Topic

Returns as numeric, the current value of a TWAIN capability.

Syntax

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Managed Extensions for C++
C++/CLI

'Declaration
 
Public Function TwainGetCapCurrentNumeric( _
   ByVal Cap As TwainCapabilities, _
   ByRef CurrentValue As Double _
) As Boolean

public bool TwainGetCapCurrentNumeric( 
   TwainCapabilities Cap,
   ref double CurrentValue
)

public function TwainGetCapCurrentNumeric( 
    Cap: TwainCapabilities;
   var  CurrentValue: Double
): Boolean;

public function TwainGetCapCurrentNumeric( 
   Cap : TwainCapabilities,
   CurrentValue : double
) : boolean;

public: bool TwainGetCapCurrentNumeric( 
   TwainCapabilities Cap,
   ref double CurrentValue
)

public:
bool TwainGetCapCurrentNumeric( 
   TwainCapabilities Cap,
   double% CurrentValue
)

Parameters

Cap: A member of the TwainCapabilities enumeration.
CurrentValue: Returns the current value of the specified TWAIN capability.

Return Value

True if success, else False -> 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. This method can be used to retrieve the following types of capabilities: TWTY_INT8 , TWTY_INT16, TWTY_INT32, TWTY_UINT8, TWTY_UINT16, TWTY_UINT32, TWTY_BOOL, TWTY_FIX32, TWTY_FRAME. You can determine the type of each TWAIN capability using the TwainGetCapItemType method or looking the twain references from http://www.twain.org

Reference

GdPictureImaging Class
GdPictureImaging Members
TwainGetCapItemType Method
TwainGetState Method
TwainSetCapCurrentNumeric Method
TwainGetLastConditionCode Method
TwainGetLastResultCode Method