Class VLBasicBitmap.TVLBasicBitmap

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Revision as of 14:22, 26 October 2012

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Package: SignalLabBasicPkg

Unit: VLBasicBitmap

Contents 1 Syntax 1.1 Delphi: 1.2 C++ Builder: 1.3 Visual C++ (MFC): 1.4 C# (.NET): 2 Summary 3 Description 4 Properties 4.1 Public 5 Methods 5.1 Public

Syntax

Delphi:

type TVLBasicBitmap = class

C++ Builder:

class TVLBasicBitmap

Visual C++ (MFC):

class CTVLBasicBitmap

C# (.NET):

public ref class TVLBasicBitmap

Summary

Bitmap wrapper class for thread safe bitmap access.

Description

Defines a Bitmap wrapper class for thread safe bitmap access. Use this class when you need to access a bitmap from different threads.

Properties

Public

• PixelFormat - Specifies the pixel format of the bitmap.
• Height - The Height of the Bitmap.
• Width - The Width of the Bitmap.
• Canvas - Access the the drawing context of the bitmap.
• RawData - Returns pointer to the raw bitmap data.

Methods

Public

• procedure Resize(AWidth : Integer; AHeight : Integer) - Resizes the bitmap.
• procedure SetSize(AWidth : Integer; AHeight : Integer) - Resizes the bitmap.
• procedure SaveToFile(Filename : String) - Saves the bitmap to a bitmap file.
• procedure SaveToStream(Stream : TStream) - Saves the bitmap to a stream.
• procedure FromBuffer(APtr : PByte; AScanlineStep : Integer) - Populates the bitmap from a video buffer.
• procedure ToBuffer(APtr : PByte; AScanlineStep : Integer) - Populates a buffer from the bitmap data.
• procedure ToBitmap(ABitmap : TBitmap) - Copies the bitmap to a standard bitmap object.
• function GetDC() : HDC - Returns the Windows Device Context (DC) of the internal bitmap.
• function GetHBitmap() : HBITMAP - Returns the HBITMAP handle of the internal bitmap.