>I often get error reports from customers pointing to file COMDLG32.OCX not being installed on their computer.
>
>I am thinking that maybe I can deal with this the following way:
>
>Place a copy of this file (COMDLG32.OCX) in the application directory. Then, at run time, when user goes to the part of the application using the COMDLG32.OCX, first check if it is loaded, and if not, load it on-the-fly from the application directory.
>
>But I don't know how to check if this ActiveX is loaded on the PC. How would I do it?
>
>Thank you in advance for any suggestions.

Try and create an instance of the control using CREATEOBJECT() and do this from inside a TRY CATCH ENDTRY construct. Then you can test whether its possible to instantiate the control or not and take appropiate action.