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





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GdPicture14 Namespace / GdPictureImaging Class / TwainGetCapCurrentNumeric Method

TwainGetCapCurrentNumeric Method (GdPictureImaging)

In This Topic
Returns as numeric, the current value of a TWAIN capability.
Syntax
'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
See Also

Reference

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