Barcodes / ActiveX Components (ActiveX Controls, COM Objects & OLE Objects) / Visual FoxPro

ActiveX Components (ActiveX Controls, COM Objects & OLE Objects)

Microsoft first introduced the term ActiveX in 1996 when they launched a downloadable user interface control or software component that could be used by Internet Explorer to give more interactive or active content on a Web page to the reader. ActiveX controls were a re-branded subset of OLE custom controls (OCX) or OLE controls (OCXes) that were streamlined for downloading over the Internet and that could be digitally signed for security and authentication reasons. These ActiveX downloads were also tagged or marked as being safe for scripting and safe for initialization, to help give users confidence in using them in ActiveX Internet apps, as they were less likely to start making unauthorized actions on their systems. ActiveX controls also supported threading models, such as Apartment Model Threading, to try and improve performance in a multi-user or multi-process environment.

OLE controls (OCX's) or Object Linking and Embedding controls were themselves the successor to VBX controls first introduced by Microsoft to help programmers extend the functionality and features of their Visual Basic program by buying and reusing a VBX control built by another programmer or company, with expertise in a specific area. VBXes were limited to 16 bit usage for example on Windows 3.x, OCXes were available for both 16 bit or 32 bit architectures and began being widely used as people adopted Windows 95, although most people tended to use VBXes on 16-bit systems and OCX controls or OLE components on 32-bit systems for performance reasons. OLE itself was based on earlier work by Microsoft in their Office products to allow data to be exchanged and reused as objects inside other documents or files, such as embedding an Excel spreadsheet in a Word document and updating the content of that Excel spreadsheet for display using Dynamic Data Exchange (DDE). Hence the term OLE document, that is still in use today.

OLE was part of the Microsoft COM or Component Object Model, that enabled programmers to reuse software components and services in a logical and object oriented manner. COM was extended and expanded over the years to include DCOM, the Distributed Component Object Model that allowed programmers to call OLE objects or COM objects situated on other computers or servers. COM+ was added to support transaction services using technologies such as Microsoft Transaction Server (MTS) and this first appeared when Windows 2000 was launched to better support distributed transactions in more complex applications, where higher performance and throughput was required. COM has gradually become a common term used to refer to: COM, DCOM, COM+, OLE and ActiveX technologies in general.

ActiveX components can be created in a variety of object oriented programming languages, but are most commonly created using C++ and the Microsoft Foundation Class (MFC), such as: MFC 4.0, MFC 4.2 and MFC 6.0. When VB 5 was released in became possible for a Visual Basic programmer to create an ActiveX component for reuse by other people and whilst most programmers claim that the best ActiveX components were written in Visual C++ or by utilizing the ActiveX Template Library, it did not stop some entrepreneurial developers from Janus Systems writing one of the bestselling ActiveX UI controls of all time in VB5 and VB6, called Janus GridEx, a VB6 ActiveX, that gives the look and feel of the Microsoft Outlook UI inside your app.

ActiveX components and ActiveX controls come with a variety of file extensions such as: .exe, .dll and .ocx and these denote a certain type of usage either in-process as part of your program or app (an ActiveX DLL), or out-of-process as a standalone executable (an ActiveX Exe), as an ActiveX control or OCX control mainly used as a UI control on a form or page. Downloadable ActiveX controls are also packaged as .cab files or Cabinet files. These CAB files are packages of files compressed to take up less space and hence can be downloaded more efficiently over the Internet.

In this ActiveX Component gallery you will find a variety of commercial products that are ActiveX objects or ActiveX controls that people sometime refer to as VB controls or as a VB object, as they are often used within Visual Basic. You will find ActiveX Windows components that allow you to carry out visuals tasks, such as an ActiveX UI control for displaying video or images, an ActiveX image control or a non-Visual ActiveX upload component that will allow you to push a file up onto a server over the Internet using HTTP or FTP protocols.

1. Universal 2D Barcode Font Kit

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Publisher: dLSoft Primary Category: Barcodes Product Type: Component / .NET Class / ActiveX OCX / DLL

Add 2D barcodes to your applications. The Universal 2D Barcode Font Kit supports Aztec, Datamatrix, PDF417 and QR Code symbols, and includes a DLL, an OCX, a .NET (Framework version 2.0 or later) component for converting a data character string into a barcode. Universal 2D Barcode Font Kit supports the Normal, Compact and Full Range modes of Aztec symbols, the Square and Rectangular Datamatrix symbols at ECC200 standard and ISO 15434 formats 05 and 06, PDF417, Micro PDF417 and Truncated PDF417 symbols, including ISO 15434 formats 05 and 06 for Micro PDF417, and QR Code and Micro QR Code Version 2 symbols in Numeric, Alphanumeric and Byte modes.
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2. GS1 Databar Font Kit

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Publisher: dLSoft Primary Category: Barcodes Product Type: Component / .NET Class / 100% Managed Code / ActiveX OCX / DLL

Create GS1 Databar (formerly RSS) barcodes. The GS1-Databar Font Kit provides a versatile way to create Databar barcodes from within any application written in a programming language that supports accessing a DLL, OCX or .NET components. GS1 Databar Font Kit, supports the full range of GS1 Databar symbols: Omnidirectional, Stacked, Truncated, Limited, Stacked-Omnidirectional, Expanded and Expanded-Stacked. The components translate data into a form which may be displayed or printed in the Databar barcode font provided as TrueType, OpenType and PostScript fonts. Includes samples for C/C++, VB.NET, C#, VB6, MS Office and Visual FoxPro.
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3. Universal Barcode Font Kit

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Publisher: dLSoft Primary Category: Barcodes Product Type: Component / .NET Class / ActiveX OCX / DLL

Create most 1D barcodes using a single font. The Universal 1D Barcode Font Kit provides a versatile way to create barcodes from within any application written in a programming language that supports accessing a DLL, OCX or .Net component., and supports most barcode types including 2 of 5, Code 39, Code 128, EAN, GS1-128, UPC, Intelligent Mail, ISBN, PostNet, RM4SCC and many more. The tools translate data into a form which may be displayed or printed in the barcode fonts, which are provided as TrueType, OpenType and PostScript fonts in three different weights and five height/width ratios. Includes samples for C/C++, VB.NET, C#, VB6, MS Office and Visual FoxPro.
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4. BarcodeScanX

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Publisher: Fath Software Primary Category: Barcodes Product Type: Component / ActiveX OCX / ActiveX DLL

BarcodeScanX is an ActiveX control used to identify and decode barcodes bitmap images. The image can be loaded from image file or passed directly from memory. Image formats: BMP, PNG, TIF, GIF, JPG, J2K, PCX, etc. Just call Scan method and all barcodes in the image are returned as string data. BarcodeScanX has methods to rotate, invert, crop, mirror and filter images before scanning. BarcodeScanX supports EAN-13, UPC-A, Interleaved2of5, Code39, Code39 Ext., Code 128, EAN-128, ISSN, ISBN, Code11 and Codabar barcode types. BarcodeScanX can be used with VisualBasic6, VisualStudio, C++, C#, VB.NET, MS Access, MS Excel, Delphi, PowerBuilder, Oracle Forms, etc and includes samples for VB6 and VB.NET with source code.
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5. BarcodeX

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Publisher: Fath Software Primary Category: Barcodes Product Type: Component / ActiveX OCX / ActiveX DLL

Add image viewing, printing and conversion to your applications. BarcodeX is a full-featured ActiveX control for generating almost any type of barcode. BarcodeX supported codes include EAN-13, EAN-8, EAN-2, EAN-5, UPC-A, UPC-E, Code39, Code39 Ext., Code93, Code 128, EAN-128, ISSN, ISBN, Plessey, Code11, Code25, Code25 Int., Codebar, Code11, PLANET, ITF-14, EAN-14 and even PDF417, DataMatrix 2D bar code. BarcodeX can be bound to a data source for use in a database reports. Barcodes can be exported into bitmaps, metafiles, clipboard. BarcodeX can be used in any Windows container application (e.g. MS Word, MS Access, Visual Basic, VisualStudio .NET, etc.). VB.NET sample program included.
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ActiveX Components (ActiveX Controls, COM Objects & OLE Objects)

1. Universal 2D Barcode Font Kit

Publisher: dLSoft Primary Category: Barcodes Product Type: Component / .NET Class / ActiveX OCX / DLL

2. GS1 Databar Font Kit

Publisher: dLSoft Primary Category: Barcodes Product Type: Component / .NET Class / 100% Managed Code / ActiveX OCX / DLL

3. Universal Barcode Font Kit

Publisher: dLSoft Primary Category: Barcodes Product Type: Component / .NET Class / ActiveX OCX / DLL

4. BarcodeScanX

Publisher: Fath Software Primary Category: Barcodes Product Type: Component / ActiveX OCX / ActiveX DLL

5. BarcodeX

Publisher: Fath Software Primary Category: Barcodes Product Type: Component / ActiveX OCX / ActiveX DLL

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