TwainGetCapQuerySupport Method (GdPictureImaging)

In This Topic

Returns the Sourceâ€™s support status of a specific TWAIN capability.

Syntax

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

'Declaration
 
Public Function TwainGetCapQuerySupport( _
   ByVal Cap As TwainCapabilities, _
   ByRef SupportGet As Boolean, _
   ByRef SupportSet As Boolean, _
   ByRef SupportGetDefault As Boolean, _
   ByRef SupportGetCurrent As Boolean, _
   ByRef SupportReset As Boolean _
) As Boolean

public bool TwainGetCapQuerySupport( 
   TwainCapabilities Cap,
   ref bool SupportGet,
   ref bool SupportSet,
   ref bool SupportGetDefault,
   ref bool SupportGetCurrent,
   ref bool SupportReset
)

public function TwainGetCapQuerySupport( 
    Cap: TwainCapabilities;
   var  SupportGet: Boolean;
   var  SupportSet: Boolean;
   var  SupportGetDefault: Boolean;
   var  SupportGetCurrent: Boolean;
   var  SupportReset: Boolean
): Boolean;

public function TwainGetCapQuerySupport( 
   Cap : TwainCapabilities,
   SupportGet : boolean,
   SupportSet : boolean,
   SupportGetDefault : boolean,
   SupportGetCurrent : boolean,
   SupportReset : boolean
) : boolean;

public: bool TwainGetCapQuerySupport( 
   TwainCapabilities Cap,
   ref bool SupportGet,
   ref bool SupportSet,
   ref bool SupportGetDefault,
   ref bool SupportGetCurrent,
   ref bool SupportReset
)

public:
bool TwainGetCapQuerySupport( 
   TwainCapabilities Cap,
   bool% SupportGet,
   bool% SupportSet,
   bool% SupportGetDefault,
   bool% SupportGetCurrent,
   bool% SupportReset
)

Parameters

Cap: A member of the TwainCapabilities enumeration.
SupportGet: Returns if the source supports Get query with the specified capability.See TwainGetCapCurrentNumeric() and TwainGetCapCurrentString().
SupportSet: Returns if the source supports Set query with the specified capability. See TwainSetCapCurrentNumeric() and TwainSetCapCurrentString().
SupportGetDefault: Returns if the source supports GetDefault query with the specified capability. See TwainGetCapDefaultNumeric() and TwainGetCapDefaultString().
SupportGetCurrent: Returns if the source supports GetCurrent query with the specified capability. See TwainGetCapCurrentNumeric() and TwainGetCapCurrentString().
SupportReset: Returns if the source supports Reset query with the specified capability. See: TwainResetCap().

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.

Reference

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