EZTwain

EZTwainX Scan sub-object

The EZTwainX.Scan sub-object offers specialized scanning properties and methods. Scan objects cannot be created, they can only be accessed as part of an EZTwainX control, using the Scan property of the control - for example,

EZTwain.Scan.PixelType = EZTwain.PT_BW
EZTwain.Scan.DPI = 200

Scan Object
Properties
	AutoNegate	bool	Automatically negate any image that is 'too black'. Default=true.	1.57
	BitDepth	long	ICAP_BITDEPTH - not usually needed: defaults correctly based on PixelType.	1.71
	Brightness	double	ICAP_BRIGHTNESS - Scanning brightness adjustment (-1000 to +1000)	1.64
	Contrast	double	ICAP_CONTRAST - Scanning contrast adjustment (-1000..+1000)	1.64
	DiscardBlankPages	bool	If true, discard blank pages (using EZTwainX.BlankPageThreshold as threshold)	1.71
	Deskew	bool	If true, automatically deskew each scanned image	1.71
	DPI	long	ICAP_XRESOLUTION/ICAP_YRESOLUTION - Resolution in dots-per-inch.	1.57
	Duplex	long	0=simplex scanning, 1=duplex, -1=don't care. Default=-1.	1.57
	Feeder	long	0=scan from platen, 1=from feeder, -1=don't care. Default=-1.	1.57
	Gamma	double	ICAP_GAMMA (so-called gamma value for scanning)	1.66
	PaperSize	PaperSize	Default=PS_ANY (no preference)	1.57
	PixelType	PixelType	ICAP_PIXELTYPE - Default=PT_NONE (no preference)	1.57
	PreviousTwainState	long	Value of TwainState (below) before the last state change.	1.81
	SourceDevice	string	Name of device to use.	1.57
	StopOnEmpty	bool	false (default): After all pages in an ADF have been scanned, the scanner's UI remains visible, allowing the user to re-load the ADF and resume scanning. true: After all pages in an ADF have been scanned, the scanner's UI is automatically closed. This property has no effect when the scanner's UI is hidden i.e. UseUI=false.	1.73
	Threshold	long	Threshold (0..255) between black and white, for B&W scans	1.66
	TwainState	long	State (1..7) of the TWAIN conversation - see TWAIN standard for details.	1.73
	UseUI	bool	Display the scanner's user interface during scanning. Default=true.	1.57
	XferMech	long	ICAP_XFERMECH - TWAIN transfer mechanism, see TWAIN specification.	1.72
Methods
	Close()		Close the currently open device, if any	1.57
	IsFeederLoaded() => bool		Query the current device, return true if there is paper in the feeder.	1.57
	Open(string S)		Set SourceDevice = S and open it.	1.66
	OpenSourceDevice()		Open the scanner named by SourceDevice property (above)	1.66
	ResetRegion()		Reset (clear) the region-of-interest as set with SetRegion	1.66
	SetRegion(double x,y,w,h)		Set the scanning region-of-interest i.e. sub-rectangle to be scanned	1.68