Variables
long	Board
	Sets or reads the selected image acquisition device via the IBoardSelect, or, if available, the IBoardSelect2 interface. More...

long	CamPort
	Sets or reads the current camera port via the ICameraSelect interface, or, if available, the ICameraSelect2 interface. More...

boolean	CanBasicDigIO
	Specifies whether the IBasicDigIO interface is available or not. More...

boolean	CanBoardSelect
	Specifies whether the IBoardSelect interface is available or not. More...

boolean	CanBoardSelect2
	Specifies whether the IBoardSelect2 interface is available or not. More...

boolean	CanCameraSelect
	Specifies whether the ICameraSelect interface is available or not. More...

boolean	CanCameraSelect2
	Specifies whether the ICameraSelect2 interface is available or not. More...

boolean	CanDeviceControl
	Specifies whether the IDeviceControl interface is available or not. More...

boolean	CanGrab2
	Specifies whether the IGrab2 interface is available or not. More...

boolean	CanGrabber
	Specifies whether the IGrabber interface is available or not. More...

boolean	CanImageRect
	Specifies whether the IImageRect interface is available or not. More...

boolean	CanLinescan
	Specifies whether the ILinescan interface is available or not. More...

boolean	CanPingPong
	Specifies whether the IPingPong interface is available or not. More...

boolean	CanPropertyChange
	Specifies whether the IPropertyChange interface is available or not. More...

boolean	CanRingBuffer
	Specifies whether the IRingBuffer interface is available or not. More...

boolean	CanSoftwareTrigger
	Specifies whether the ISoftwareTrigger interface is available or not.. More...

boolean	CanTrigger
	Specifies whether the ITrigger interface is available or not. More...

__int3264	Image
	Defines the image object that is assigned to the Common Vision Grabber Control. More...

long	NumBoards
	Returns the number of image acquisition devices available in the system. The image has to support the IBoardSelect2 interface. More...

long	NumPorts
	Ascertain the number of camera ports. More...

TriggerMode	TriggerMode
	Sets or reads the current trigger mode via the ITrigger interface. More...

long	VBToWait
	Sets or reads the expected vertical blanks when changing the camera port via the ICameraSelect or the ICameraSelect2 interface. More...

Detailed Description

Variable Documentation

◆ Board

long Board

Sets or reads the selected image acquisition device via the IBoardSelect, or, if available, the IBoardSelect2 interface.

Attention: If the IBoardSelect2 interface is available it will be used to change the actual device even if the IBoardSelect interface is available too. Notice that the Image property or some properties of the underlying Image object (e.g. its size) might change after changing the actual device.
If the board changes an ImageUpdated event is fired to indicate the change.

Within the event you should change the Image property of all controls that are using the same image as the Grabber control. All information about the image that might be stored in an application have to be updated. in case of any error the CVCError event will be fired.

Parameters

[in,out] Board Sets the selected image acquisition device

Returns: Current image acquisition device.

Related Topics:: NumBoards, CanBoardSelect2, CanBoardSelect

Examples:: Visual Basic - VB Grabber Control Example

◆ CamPort

long CamPort

Sets or reads the current camera port via the ICameraSelect interface, or, if available, the ICameraSelect2 interface.

After chaning the port the grabber will wait VBToWait vertical blanks to ensure proper re-sychronization of the PLL (phase looked loop) if the cameras are not synchronized to each other.

Attention: If the ICameraSelect2 interface is available it will be used to change the camera port even if the ICameraSelect interface is available too.
Notice that the Image property or some properties of the underlying Image object (e.g. its size) might change after changing the camera port.
If the camera port changes an ImageUpdated event is fired to indicate the change.

Within the event you should change the Image property of all controls that are using the same image as the Grabber control. All information about the image that might be stored in an application have to be updated. in case of any error the CVCError event will be fired.

Parameters

[in,out] CamPort Sets the current camera port. The value ranges from 0 to NumPorts - 1.

Returns: Current cam port.

Related Topics:: VBToWait, NumPorts, CanCameraSelect2, CanCameraSelect

Examples:: Visual Basic - VB Grabber Control Example

◆ CanBasicDigIO

boolean CanBasicDigIO

readonly

Specifies whether the IBasicDigIO interface is available or not.

IBasicDigIO function can be called from within the Common Vision Digital I/O Control.

Parameters

[out] CanBasicDigIO Indicates whether the IBasicDigIO interface is available.

Returns: TRUE if IBasicDigIO interface is available, FALSE otherwise.

Examples:: Visual Basic - VB Grabber Control Example

◆ CanBoardSelect

boolean CanBoardSelect

readonly

Specifies whether the IBoardSelect interface is available or not.

Attention: If the IBoardSelect2 interface is available the IBoardSelect interface will be ignored and the IBoardSelect2 interface is used to change the actual device.

Parameters

[out] CanBoardSelect Indicates whether the IBoardSelect interface is available.

Returns: TRUE if IBoardSelect interface is available, FALSE otherwise.

Related Topics:: CanBoardSelect2, Board

Examples:: Visual Basic - VB Grabber Control Example

◆ CanBoardSelect2

boolean CanBoardSelect2

readonly

Specifies whether the IBoardSelect2 interface is available or not.

Attention: If the IBoardSelect2 interface is available it will be used to change the actual device even if the IBoardSelect interface is available too.

Parameters

[out] CanBoardSelect2 Indicates whether the IBoardSelect2 interface is available.

Returns: TRUE if IBoardSelect2 interface is available, FALSE otherwise.

Related Topics:: CanBoardSelect, Board, NumBoards

Examples:: Visual Basic - VB Grabber Control Example

◆ CanCameraSelect

boolean CanCameraSelect

readonly

Specifies whether the ICameraSelect interface is available or not.

Attention: If the ICameraSelect2 interface is available the ICameraSelect interface will be ignored and the ICameraSelect2 interface is used to change the actual camera port.

Parameters

[out] CanCameraSelect Indicates whether the ICameraSelect interface is available.

Returns: TRUE if ICameraSelect interface is available, FALSE otherwise.

Related Topics:: CanCameraSelect2, CamPort, NumPorts, VBToWait

Examples:: Visual Basic - VB Grabber Control Example

◆ CanCameraSelect2

boolean CanCameraSelect2

readonly

Specifies whether the ICameraSelect2 interface is available or not.

Attention: If the ICameraSelect2 interface is available it will be used to change the actual device even if the ICameraSelect interface is available too.

Parameters

[out] CanCameraSelect2 Indicates whether the ICameraSelect2 interface is available.

Returns: TRUE if CanCameraSelect2 interface is available, FALSE otherwise.

Related Topics:: CanCameraSelect, CamPort, NumPorts, VBToWait

Examples:: Visual Basic - VB Grabber Control Example

◆ CanDeviceControl

boolean CanDeviceControl

readonly

Specifies whether the IDeviceControl interface is available or not.

Attention: Using this interface you can call special driver functions that are defined in the CVB Driver User Guide for your image acquisition device.

Parameters

[out] CanDeviceControl Indicates whether the IDeviceControl interface is available.

Returns: TRUE if IDeviceControl interface is available, FALSE otherwise.

Related Topics:: SendBinaryCommand, SendStringCommand

Examples:: There are special example programs available for the selected Image Acquisition Hardware, means Framegrabber or Cameras. Please have a look at the directory CVB%\Hardware.
Visual Basic - VB Grabber Control Example

◆ CanGrab2

boolean CanGrab2

readonly

Specifies whether the IGrab2 interface is available or not.

IGrab2 functions are called to acquire images by the Common Vision Image Control.

Parameters

[out] CanGrab2 Indicates whether the IGrab2 interface is available.

Returns: TRUE if IGrab2 interface is available, FALSE otherwise.

Related Topics:: CanPingPong, CanGrabber

Examples:: Visual Basic - VB Grabber Control Example

◆ CanGrabber

boolean CanGrabber

readonly

Specifies whether the IGrabber interface is available or not.

IGrabber functions are called to acquire images by the Common Vision Image Control.

Parameters

[out] CanGrabber Indicates whether the IGrabber interface is available.

Returns: TRUE if IGrabber interface is available, FALSE otherwise.

Related Topics:: CanGrab2, CanPingPong

Examples:: Visual Basic - VB Grabber Control Example

◆ CanImageRect

boolean CanImageRect

readonly

Specifies whether the IImageRect interface is available or not.

Parameters

[out] CanImageRect Indicates whether the IImageRect interface is available.

Returns: TRUE if IImageRect interface is available, FALSE otherwise.

Related Topics:: ImageSize, ImageOffset

Examples:: Visual Basic - VB Grabber Control Example

◆ CanLinescan

boolean CanLinescan

readonly

Specifies whether the ILinescan interface is available or not.

ILinescan functions can be called from withing the Common Vision Linescan Control.

Parameters

[out] CanLinescan Indicates whether the ILinescan interface is available.

Returns: TRUE if ILinescan interface is available, FALSE otherwise.

Examples:: Visual Basic - VB Grabber Control Example

◆ CanPingPong

boolean CanPingPong

readonly

Specifies whether the IPingPong interface is available or not.

IPingPong functions are called to acquire images by the Common Vision Image Control.

Parameters

[out] CanPingPong Indicates whether the IPingPong interface is available.

Returns: TRUE if IPingPong interface is available, FALSE otherwise.

Related Topics:: CanGrab2, CanGrabber

Examples:: Visual Basic - VB Grabber Control Example

◆ CanPropertyChange

boolean CanPropertyChange

readonly

Specifies whether the IPropertyChange interface is available or not.

IPropertyChange functions are called by the control when you pass an image into the control that supports this interface. The interface will then be used to generate the ImagePropertyChanged event.

Parameters

[out] CanPropertyChange Indicates whether the IPropertyChange interface is available.

Returns: TRUE if IPropertyChange interface is available, FALSE otherwise.

Related Topics:: ImagePropertyChanged event

◆ CanRingBuffer

boolean CanRingBuffer

readonly

Specifies whether the IRingBuffer interface is available or not.

IRingBuffer functions can be called from withing the Common Vision RingBuffer Control.

Parameters

[out] CanRingBuffer Indicates whether the IRingBuffer interface is available.

Returns: TRUE if IRingBuffer interface is available, FALSE otherwise.

◆ CanSoftwareTrigger

boolean CanSoftwareTrigger

readonly

Specifies whether the ISoftwareTrigger interface is available or not..

Parameters

[out] CanSoftwareTrigger Indicates whether the ISoftwareTrigger interface is available.

Returns: TRUE if ISoftwareTrigger interface is available, FALSE otherwise.

Related Topics:: GenerateSoftwareTrigger

Examples:: Visual Basic - VB Grabber Control Example

◆ CanTrigger

boolean CanTrigger

readonly

Specifies whether the ITrigger interface is available or not.

Attention: To use the trigger you need to ensure correct trigger settings in your image acquisition device configuration file.
Specially the trigger source has to be set to a hardware trigger. After enableing the trigger start an acquisition for instance using the Grab property of the Common Vision Image Control. A trigger signal will then force the ImageSnaped evet of the Common Vision Image Control to be fired.

Parameters

[out] CanTrigger Indicates whether the ITrigger interface is available.

Returns: TRUE if ITrigger interface is available, FALSE otherwise.

Related Topics:: TriggerMode

Examples:: Visual Basic - VB Grabber Control Example

◆ Image

__int3264 Image

Defines the image object that is assigned to the Common Vision Grabber Control.

Attention: The image object manages the image information, e.g. images from disk or from a image acquisition device driver. Other interfaces may be associated with it to control the image acquisition device.

Parameters

[in,out] Image Handle of the image object.

Returns: Image object handle.

◆ NumBoards

long NumBoards

readonly

Returns the number of image acquisition devices available in the system. The image has to support the IBoardSelect2 interface.

In this case you can select a device within the range 0...NumBoards-1 via the Board property. If the value for NumBoards is 0 then the IBoardSelect2 interface is not supported. Please check before with the CanBoardSelect2 property.

Parameters

[out] NumBoards Indicates whether the ISoftwareTrigger interface is available.

Returns: Number of image acquisition devices.

Related Topics:: CanBoardSelect2, Board

Examples:: Visual Basic - VB Grabber Control Example

◆ NumPorts

long NumPorts

readonly

Ascertain the number of camera ports.

Parameters

[in,out] NumPorts Select a camera port within the range from 0 to NumPorts - 1.

Returns: Number of camera ports.

Related Topics:: VBToWait, CamPort, CanBoardSelect2, CanBoardSelect

Examples:: Visual Basic - VB Grabber Control Example

◆ TriggerMode

TriggerMode TriggerMode

Sets or reads the current trigger mode via the ITrigger interface.

Parameters

[in,out] TriggerMode Sets the trigger mode. For more details see TriggerModeEnum.

Returns: Current trigger mode.

Related Topics:: CanTrigger

Examples:: Visual Basic - VB Grabber Control Example

◆ VBToWait

long VBToWait

Sets or reads the expected vertical blanks when changing the camera port via the ICameraSelect or the ICameraSelect2 interface.

Parameters

[in,out] VBToWait Sets vertical blanks.

Returns: Vertical blanks.

Related Topics:: CamPort, CanBoardSelect2, CanBoardSelect

Examples:: Visual Basic - VB Grabber Control Example

Variables

Detailed Description

Variable Documentation

◆ Board

◆ CamPort

◆ CanBasicDigIO

◆ CanBoardSelect

◆ CanBoardSelect2

◆ CanCameraSelect

◆ CanCameraSelect2

◆ CanDeviceControl

◆ CanGrab2

◆ CanGrabber

◆ CanImageRect

◆ CanLinescan

◆ CanPingPong

◆ CanPropertyChange

◆ CanRingBuffer

◆ CanSoftwareTrigger

◆ CanTrigger

◆ Image

◆ NumBoards

◆ NumPorts

◆ TriggerMode

◆ VBToWait