LTWAINPROPERTIES

pLTWAINPROPERTIES= ^LTWAINPROPERTIES;
LTWAINPROPERTIES= Packed Record
   bPaperSource: L_BOOL;
   nMaxNumOfPages: L_INT;
   nDuplexScanning: L_INT;
   ImageRes: IMAGERESOLUTION;
   DataTransfer: DATATRANSFER;
   ImageEff: IMAGEEFFECTS;
end;

The LTWAINPROPERTIES structure provides information about the available TWAIN properties.

Member	Description
bPaperSource	Flag that indicates whether to use the Auto - Feed capability of the selected TWAIN source. Possible values are:
	Value	Meaning
	TRUE	Use the Auto - Feed capability.
	FALSE	Do not use the Auto - Feed capability.
nMaxNumOfPages	The maximum number of pages to get from the TWAIN source. (If the function updates this field to -1, it means that the number of pages is unlimited.)
nDuplexScanning	Sets the type of duplex scanning. Possible values are (according to the TWAIN 1.9 specification):
	Value	Meaning
	TWDX_NONE	No duplex used.
	TWDX_1PASSDUPLEX	1 pass duplex.
	TWDX_2PASSDUPLEX	2 pass duplex.
ImageRes	A structure of type IMAGERESOLUTION that contains image resolution data for the TWAIN source.
DataTransfer	A structure of type DATATRANSFER that contains data transfer information for the TWAIN source.
ImageEff	A structure of type IMAGEEFFECTS that contains image effects information for the TWAIN source.

Comments

pLTWAINPROPERTIES is a pointer to a LTWAINPROPERTIES structure. Where the function parameter type is pLTWAINPROPERTIES, you can declare an LTWAINPROPERTIES variable, update the structure's fields, and pass the variable's address in the parameter. Declaring a pLTWAINPROPERTIES variable is necessary only if your program requires a pointer.

LTWAINPROPERTIES is used with the GetProperties and SetProperties methods.