Class VLImageDisplay.TVLImageDisplay
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Package: VideoLabBasicPkg
Unit: VLImageDisplay
Inherits: TVLCommonImageDisplay
Contents |
Syntax
Delphi:
type TVLImageDisplay = class( TVLCommonImageDisplay )
C++ Builder:
class TVLImageDisplay : public TVLCommonImageDisplay
Visual C++ (MFC):
class CTVLImageDisplay : public CTVLCommonImageDisplay
C# (.NET):
public ref class ImageDisplay : Mitov.VideoLab.CommonImageDisplay
Summary
Video display component.
Description
Creates visible image display for representing the frame images.
Use this component to visualize video data.
Diagram:
In Visual C++ you can instantiate the component by using the Open method:
VCL_InitControls( m_hWnd ); // Call this function once before creating any visual controls! CTVLImageDisplay ImageDisplay; ImageDisplay.Open( m_ImageDisplay.m_hWnd );
Properties
Published
- RenderMode - Specifies the desired rendering mode.
Methods
Public
- procedure DrawTo(AGraphics : IGPGraphics; AContoursOnly : Boolean; AWidth : Single; AHeight : Single)
- 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.
- StretchMax - Stretches the image to fill completely the frame, while preserving the aspect ration.
- 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.
