ActiveX controls are used to extend the functionality of web browsers. They are typically written in C++ or another low-level programming language and can be used to perform tasks that would not be possible with HTML or JavaScript alone. For example, ActiveX controls can be used to play videos, display 3D graphics, and access data from databases.
In order to use an ActiveX control, it must first be installed on the user’s computer. There are a few different ways to check if an ActiveX control is installed. One way is to use the Windows Registry. The Registry is a database that stores information about all of the software installed on a computer. To check if an ActiveX control is installed, you can look for the control’s CLSID in the Registry. The CLSID is a unique identifier for each ActiveX control.
