Printing - FoxTalk - dFPUG-Portal

Sometimes an add-in most appropriately enhances or replaces existing functionality in the Class
Browser. For example, the DocumentClass add-in can be viewed as analogous to the View Class
command button. You could say it would be appropriate to hook this add-in not to the add-in
menu but rather to the RightClick event of the View Class button.
To show how this is done, let's take a closer look at the syntax of the AddIn() method:
AddIn(, ;
, ;
, ;
, ;
, ;
)
is the name of the add-in. The name can be one or more words and case isn't
important except that it will display on the menu in the same manner as you specify here. The
add-in will display in the add-in menu if the third parameter (Method Name) isn't specified.
is the name of a program to run. The program can be a .PRG, .APP, .EXE, or
.FXP. In addition, you can specify an .SCX. The assumed extension is .PRG; specify other
extensions as appropriate.
can also be the name of an object. The syntax for this would be , for example:
_oBrowser.AddIn("MyAddIn", "MyVcx.VCX, MyClass")
When the add-in is run, the class MyClass of MyVcx.VCX is instantiated. Remember that an
object parameter will be sent through to the class.
It's a good idea to specify a full path to the program in this parameter, ensuring that the add-in
runs properly wherever you are in your hard disk. If the Class Browser can't find the program or
.VCX when trying to call an add-in, an error will be generated.
is the name of a method to automatically call the add-in. Any valid method,
either a method of the Class Browser form or one of its objects, can be a hook for a method. For
example, if you want to hook MyAddIn to the Export CommandButton's RightClick event, you
can use the following code:
_oBrowser.AddIn("MyAddIn", , "CmdExport.Click")
By the way, you don't have to specify the second parameter in this command. This allows you to
change the registration of an add-in only as much as you need. In this case, since the program
that will run when MyAddIn is run doesn't change, there's no need to specify that parameter.