Page 21 - Open Soource Technologies 304.indd

Unit 2: Working of VB Applications

In the above figure Project type specifies the type of project that is being developed, in this case
the project is of type ActiveX Exe, other project types can be seen by clicking on the combo box.
“Project Name” specifies the name of the component type library.

You include the ActiveX reference at a later stage in to the Standard EXE. Note that the “Project
Description” is the one that appears in “Add Reference” dialog box when its corresponding
component is added.
In this case, startup object is set to “None”, as there is no initialization required for this project.
Go to the component tab and check for the following:
“Version Compatibility” by default is of type “Project Compatibility” for all ActiveX Project
types.
“Start Mode” is of type “ActiveX Component” by default. Select the “Standalone” option button,
only if you intend to start the application as a standalone.
Now, you write the required code. We have added a new Module for placing our code.
Go to Project -> Add Module.

Figure 2.3: ActiveX-3, Project Properties Dialog Box.

Don’t Use the Initialize Event to Set an ActiveX Control’s Default Property
Values. If you put code to initialize properties to their default values in your
custom ActiveX control’s Initialize event instead of in the InitProperties event,
then you will have some very frustrated developers on your hands. Your
default values will override the values the developer has assigned at design
time every time the developer runs an application using your control.

LOVELY PROFESSIONAL UNIVERSITY 15