LWia::StartVideoPreview

#include "ltwrappr.h"

virtual L_INT LWia::StartVideoPreview(bStretchToFitParent)

L_BOOL bStretchToFitParent;

/* specifies whether the video display is stretched to fit the parent window */

Starts the video preview. You can specify the parent window or control where to start the video preview by calling the LScanner::SetWindow function before calling this function.

Parameter	Description
bStretchToFitParent	Specifies whether the video display is stretched to fit the parent window. Possible values are:
	Value	Meaning
	TRUE	Stretch the video preview to fit the parent window.
	FALSE	Video is displayed in a supported resolution smaller than the parent window.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

This feature is available in LEADTOOLS version 16 or higher.

This function will start the video stream preview in the window or control specified using the LScanner::SetWindow function.

This function will internally set the image directory of the captured still images to the device's default path unless you called the LWia::SetPropertyString function using the WIA_DPV_IMAGES_DIRECTORY property ID and the directory path you wish to use before calling the LWia::StartVideoPreview function.

Required DLLs and Libraries

LTWIA

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Functions:	LWia::ResizeVideoPreview, LWia::EndVideoPreview, LWia::AcquireImageFromVideo, LWia::IsVideoPreviewAvailable, LWia::InitSession, LWia::EndSession, Class Members
Topics:	Working with Video Devices
	WIA Functionality: Property Functions