Allows you to add designers to your project's Toolbox.
Available Designers List
Displays the available designers. You add a designer by selecting the check box next to its name.
Note You can't remove a designer that is used in your project.
Path
Displays the path of the designer selected in the Available Designers List.
Selected Items Only
When selected, displays only those designers in the Available Designers list which you have selected to include in the project.
Apply
Adds the selected designers to the Toolbox without closing the dialog box.
OK
Adds the selected designers to the Toolbox and closes the Components dialog box.