WiaSession Class Methods

Summary

For a list of all members of this type, see WiaSession members

Public Methods

	Name	Description
	Acquire	Acquires one or more images from a WIA source.
	AcquireImageFromVideo	Extracts a still image from the video stream, and saves the image as a JPEG file.
	AcquireSimple	Acquires one or more images from a WIA source.
	AcquireToFile	Acquires one or more images from a WIA source directly to file(s).
	EndVideoPreview	Shuts down the streaming video.
	EnumCapabilities	Enumerates all of the available WIA driver capabilities and properties and determines the available values for each one.
	EnumChildItems	Enumerates all available child items for the root item specified in the parentItem parameter.
	EnumDevices	Enumerates all available system WIA devices connected to the user's machine.
	EnumFormats	Enumerates all of the available WIA driver transfer formats.
	FreeItem	Frees the items enumerated by the EnumChildItems method.
	GetCategoryGuid	Retrieves the relevant System.Guid structure for the WIA 2.0 item's category.
	GetFormatGuid	Retrieves the relevant System.Guid structure for the passed file format ID.
	GetProperties	Gets the properties for the specified item.
	GetPropertyBuffer	Retrieves the Stream buffer for any WiaVariableTypes.UI1 or WiaVariableTypes.Vector property.
	GetPropertyGuid	Retrieves the Guid structure for any WiaVariableTypes.Clsid property.
	GetPropertyIdString	Gets the equivalent string for the passed property ID.
	GetPropertyLong	Retrieves the Long value for a WIA property of any of the following types: WiaVariableTypes.I1, WiaVariableTypes.UI1, WiaVariableTypes.I2, WiaVariableTypes.UI2, WiaVariableTypes.I4, WiaVariableTypes.UI4, WiaVariableTypes.Int, WiaVariableTypes.UInt, WiaVariableTypes.R4, or WiaVariableTypes.R8.
	GetPropertyString	Retrieves a string buffer for any WiaVariableTypes.Bstr property.
	GetPropertySystemTime	Retrieves a System.DateTime structure for any WiaVariableTypes.UI2 or WiaVariableTypes.Vector property.
	GetRootItem	Gets the equivalent string for the passed property ID.
	GetSelectedDevice	Gets a string that contains the ID for currently selected device.
	IsAvailable	Determines which version of the WIA source is installed.
	IsVideoPreviewAvailable	Determines whether there is an available video preview.
	ResizeVideoPreview	Resizes the video playback to the largest supported resolution that fits inside the parent window.
	SelectDevice	Selects the WIA device represented by the passed device ID.
	SelectDeviceDlg	Displays a dialog box that enables the user to select a WIA hardware device for image acquisition.
	SetProperties	Sets the values of the properties to the values specified in the WiaProperties structure into the WIA device's item passed through the item parameter.
	SetPropertyBuffer	Fills the Stream buffer for any WiaVariableTypes.UI1 or WiaVariableTypes.Vector property.
	SetPropertyGuid	Sets WiaVariableTypes.Clsid property values.
	SetPropertyLong	Sets the Long value for the WiaVariableTypes.I1, WiaVariableTypes.UI1, WiaVariableTypes.I2, WiaVariableTypes.UI2, WiaVariableTypes.I4, WiaVariableTypes.UI4, WiaVariableTypes.Int, WiaVariableTypes.UInt, WiaVariableTypes.R4, and WiaVariableTypes.R8 properties.
	SetPropertyString	Sets a string value for any WIA property of type WiaVariableTypes.Bstr that is not Read only.
	SetPropertySystemTime	Sets the date and time of the specified item in the form of a System.DateTime structure for WiaVariableTypes.UI2 or WiaVariableTypes.Vector properties.
	Shutdown	Ends a WIA session.
	Startup	Initializes the WIA session.
	StartVideoPreview	Starts the video preview inside the window handle specified through the owner parameter.

Protected Methods

	Name	Description
	Dispose	This member supports the Leadtools infrastructure and is not intended to be used directly from your code.
	Finalize	This member overrides the System.Object.Finalize method.

WiaSession Class Methods

Summary

Public Methods

Protected Methods

See Also