GdPicture.NET Reference Guide
TwainGetAvailableCompressionCount Method (GdPictureImaging)





GdPicture14 Namespace > GdPictureImaging Class : TwainGetAvailableCompressionCount Method
Returns the number of available compression values which can be used by the opened source in its current configuration for file transfer mode.
Syntax
'Declaration
 
Public Function TwainGetAvailableCompressionCount() As Integer
public int TwainGetAvailableCompressionCount()
public function TwainGetAvailableCompressionCount(): Integer; 
public function TwainGetAvailableCompressionCount() : int;
public: int TwainGetAvailableCompressionCount(); 
public:
int TwainGetAvailableCompressionCount(); 

Return Value

If Success, non zero: The number of available compression 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
TwainGetAvailableCompressionNo Method
TwainGetLastConditionCode Method
TwainGetLastResultCode Method