Class VLImageDisplay.TVLExternalImageDisplayElement

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Package: VideoLabBasicPkg

Unit: VLImageDisplay

Inherits: TVLBasicImageDisplayElement

Contents 1 Syntax 1.1 Delphi: 1.2 C++ Builder: 1.3 Visual C++ (MFC): 1.4 C# (.NET): 2 Summary 3 Description 4 Methods 4.1 Public 5 From TVLBasicImageDisplayElement 6 Properties 6.1 Published 7 Methods 7.1 Public 8 From TVLImageDisplay 9 Methods 9.1 Public 10 From TVLCommonImageDisplay 11 Properties 11.1 Published 12 Methods 12.1 Public 13 Pins 14 From TVLCommonDisplay 15 Properties 15.1 Published 15.2 Public 16 Methods 16.1 Public 17 Events 18 From TSLCustomControlItem 19 Properties 19.1 Public 20 Methods 20.1 Public 21 From TLPCustomControl 22 Properties 22.1 Published 23 Methods 23.1 Public 24 Events

Syntax

Delphi:

type TVLExternalImageDisplayElement = class( TVLBasicImageDisplayElement, ILPDrawComponentElement )

C++ Builder:

class TVLExternalImageDisplayElement : public TVLBasicImageDisplayElement

Visual C++ (MFC):

class CTVLExternalImageDisplayElement : public CTVLBasicImageDisplayElement

C# (.NET):

public ref class TVLExternalImageDisplayElement : Mitov.VideoLab.BasicImageDisplayElement

Summary

Component element drawing video.

Description

Add this component element to draw video inside a component.

Example:

Methods

Public

• procedure Draw(AGraphics : IGPGraphics; AContoursOnly : Boolean; ARadiusX : Single; ARadiusY : Single; Width : Single; Height : Single; AXCoeff : Single; AYCoeff : Single)

From TVLBasicImageDisplayElement

Properties

Published

• Position - Specifies the position of the component element.
• Size - Specifies the size of the component element.

Methods

Public

• procedure Invalidate()
• procedure InvalidateSize()

From TVLImageDisplay

Methods

Public

• procedure Clear() - Clears the Display.
• procedure Invalidate()

From TVLCommonImageDisplay

Properties

Published

• AutoClear - Auto clear the display at the end of the video.
• AspectRatio - Specifies the desired aspect ration for the display.
• TabStop

Methods

Public

• procedure Clear() - Clears the display.
• procedure DisplayBitmap(ABitmap : TBitmap) - Displays the content of a bitmap.
• procedure DisplayBitmap(ABitmap : TVLBitmap) - Displays the content of a bitmap.
• procedure DisplayImage(AImage : IVLImageBuffer) - Displays the content of an image buffer.

Pins

• InputPin - The Video Input Pin of the display.
• UserControlOutputPin - User control source pin.

From TVLCommonDisplay

Properties

Published

• AutoSize - Auto-size to display to the video size.
• Center - Center the image in the display.
• Stretch - Stretch the image to the display size.
• Proportional - Keep the image proportional(Preserve aspect ratio).
• Color

Public

• ImageHeight - Returns the Height of the image in the display.
• ImageWidth - Returns the Width of the image in the display.
• ImageTop - Returns the Top position of the image in the display.
• ImageLeft - Returns the Left position of the image in the display.

Methods

Public

• procedure SetParent(AParent : TWinControl)
• function ScreenToImage(AValue : TPoint) : TPoint - Converts from screen coordinates into video frame coordinates.

Events

• OnMouseMove
• OnMouseDown
• OnMouseUp
• OnClick
• OnDblClick

From TSLCustomControlItem

Properties

Public

• Index
• ComponentList

Methods

Public

• procedure SetParent(AParent : TWinControl)
• function GetHasEnable() : Boolean
• function GetCanDisable() : Boolean
• procedure SetParentComponent(AValue : TComponent)

From TLPCustomControl

Properties

Published

• Visible

Methods

Public

• procedure InvalidateIntRect(ARect : TRect)

Events

• OnMouseEnter
• OnMouseLeave