Understanding Activex And Ole PdfBy Albina C. In and pdf 02.05.2021 at 00:24 6 min read
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ActiveX, COM and OLE
ISBN Today, however, it's usually just called COM. The book is written for anyone who needs to know what these technologies are and how they work. Reading it won't by itself make you a COM programmer - there's almost no code in the book - but software professionals of all kinds can benefit from its architectural description. And it's short enough that you won't need to set aside the next six months to read it.
Join Stack Overflow to learn, share knowledge, and build your career. Connect and share knowledge within a single location that is structured and easy to search. I'm working on an ActiveX control, and the control is being correctly instantiated based on the Mime Type. I'm trying to understand how to retrieve the path to the file. This very old deprecated KB article specifically says:.
ActiveX, COM and OLE
The DataWindow object can display the OLE object as an icon, or it can display an image of the contents when display of contents is supported by the server. Data from the DataWindow object. Associating the object with rows. When the OLE object is added to a DataWindow object, you can associate it with individual rows, groups of rows, or all rows. In the presentation style, the OLE object is always associated with all rows.
Understanding ActiveX and OLE David Chappell Free. Software Toolbox ActiveX vs OCX. Understanding Universal Data Access OLE DB and ADO. PDF.
Component Object Model
It is used to enable inter-process communication object creation in a large range of programming languages. The essence of COM is a language-neutral way of implementing objects that can be used in environments different from the one in which they were created, even across machine boundaries. For well-authored components, COM allows reuse of objects with no knowledge of their internal implementation, as it forces component implementers to provide well-defined interfaces that are separated from the implementation.
OLE, originally an acronym for Object Linking and Embedding, is a facility that allows Windows programs to share data and program functionality. The OLE control in the Window painter allows you to link or embed components from several applications in a window. For most servers, you can also control the server application using functions and properties defined by that server.
Rosca D. An ActiveX control is an object that supports a customizable, programmatic interface. Usingthe methods, events, and properties exposed by a control, Web authors can automate their HTMLpages. Examples of ActiveX Controls include text boxes, command buttons, audio players, videoplayers, stock tickers, and so on. ATL 2.
This section explains how you select the control you want by choosing whether it holds an OLE object also called an insertable object or an ActiveX control:. An insertable OLE object is a document associated with a server application. The object can be activated and the server provides commands and toolbars for modifying the object. An ActiveX control or OLE custom control is itself a server that processes user actions according to scripts you program in PowerBuilder. You can write scripts for ActiveX control events and for events of the PowerBuilder container. Those scripts call functions and set properties that belong to the ActiveX control.
In principle, ActiveX is not dependent on Microsoft Windows operating systems, but in practice, most ActiveX controls only run on Windows. Most also require the client to be running on an x86 -based computer because ActiveX controls contain compiled code. ActiveX is still supported as of Windows 10 through Internet Explorer 11 , while ActiveX is not supported in their default web browser Microsoft Edge which has a different, incompatible extension system, as it is based on Google 's Chromium project. ActiveX is one of the major technologies used in component-based software engineering. Many Microsoft Windows applications—including many of those from Microsoft itself, such as Internet Explorer , Microsoft Office , Microsoft Visual Studio , and Windows Media Player —use ActiveX controls to build their feature-set and also encapsulate their own functionality as ActiveX controls which can then be embedded into other applications. Internet Explorer also allows the embedding of ActiveX controls in web pages.
Возможные последствия полученного известия словно пулей пронзили Джаббу. Казалось, тучный шеф отдела обеспечения системной безопасности вот-вот рухнет на пол.
Он, конечно, с легкостью мог набрать код лифта и отправить Сьюзан домой, но она нужна ему. Она должна помочь ему найти ключ в компьютере Хейла. Стратмор пока не сказал ей, что этот ключ представляет для него отнюдь не только академический интерес. Он думал, что сможет обойтись без ее участия - принимая во внимание ее склонность к самостоятельности - и сам найдет этот ключ, но уже столкнулся с проблемами, пытаясь самостоятельно запустить Следопыта. Рисковать еще раз ему не хотелось.
Нуматака начал слегка нервничать. Он очень надеялся, что ничего не сорвалось. Если ключ так хорош, как о нем говорят, он взломает самый совершенный продукт компьютерной эры - абсолютно стойкий алгоритм цифрового кодирования.