Class VLImageDisplay.TVLExternalImageDisplayMatrixLayer

---

Revision as of 00:18, 22 November 2011

This is a Beta Read Only version of this page. Please review and send recommendations to mitov@mitov.com. We will enable the editing as soon as we are happy with the overall Wiki site.

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 From TVLBasicImageDisplayElement 5 Properties 5.1 Published 6 Methods 6.1 Public 7 From TVLImageDisplay 8 Methods 8.1 Public 9 From TVLCommonImageDisplay 10 Properties 10.1 Published 11 Methods 11.1 Public 12 Pins 13 From TVLCommonDisplay 14 Properties 14.1 Published 14.2 Public 15 Methods 15.1 Public 16 Events 17 From TSLCustomControlItem 18 Properties 18.1 Public 19 Methods 19.1 Public 20 From TLPCustomControl 21 Properties 21.1 Published 22 Methods 22.1 Public 23 Events

Syntax

Delphi:

type TVLExternalImageDisplayMatrixLayer = class( TVLBasicImageDisplayElement, ILPMatrixComponentElement )

C++ Builder:

class TVLExternalImageDisplayMatrixLayer : public TVLBasicImageDisplayElement

Visual C++ (MFC):

class CTVLExternalImageDisplayMatrixLayer : public CTVLBasicImageDisplayElement

C# (.NET):

public ref class TVLExternalImageDisplayMatrixLayer : Mitov.VideoLab.BasicImageDisplayElement

Summary

Matrix element drawing video.

Description

Add this matrix element to draw video over in the matrix.

Example:

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