Download Developing Visual Basic Add-ins by PhD Steven Roman PDF
By PhD Steven Roman
A hugely lucid textual content certainly on a subject region that no longer many writers have even try to become familiar with. After scripting this textual content, i started to create add-in from reminiscence. it is a disgrace there usually are not extra books love it.
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However, default members tend to make code less readable, and for this reason, they are generally avoided in this book. One notable exception is for a collection object. It's usually the case that the default member of a collection object is the Item method. Item(2) Since this use of the default member isn't likely to cause any confusion, we will use it. html[09/07/2009 22:47:09] page_48 < previous page page_48 next page > Page 48 4 Menus and Toolbars In this chapter: Menus and Toolbars: An Overview Menus and Toolbars: The Object Model Example: Creating a Menu Example: A More Elaborate Menu Example: Creating a Toolbar Example: Adding an Item to an Existing Menu Built-in Face IDs Most add-ins require that menu items or toolbar buttons be added to the VB IDE so that the user can invoke its features.
However, all references to the object must be freed before the object is destroyed. This is another reason not to point more than one object variable at the same object if possible. To test whether or not an object variable has been set to Nothing, we write: If proj1 Is Nothing Then Default Members Many (but not all) VBIDE objects have a default member (property or method) that is invoked when a property or method is expected but one isn't specified. For instance, the default member for the VBProject object is the Name property.
It also serves to indicate in the Immediate window when the add-in was connected and to provide a useful demarcation point. The BeginShutdown Method The AddinInstance interface of VB6 includes an additional method not included in IDTExtensibility. The syntax is: Sub BeginShutdown (Custom() As Variant) This event is fired immediately before shutting down the VB IDE environment. The OnDisconnection Method The OnDisconnection method is fired by VB when we attempt to deactivate the add-in by unchecking it in the Add-In Manager or through code (using the add-in portion of the VB IDE object model).