I have an excel 2003 application with a one combobox, two textboxes and 3
buttons. These elements are on sheet1 of a workbook, not in a form. Behind
the buttons and the combobox there is vba code handling click events, change
events etc. The application downloads data from a server on the intranet and
displays a pivot diagram and some graphs.

Everything works fine on a windows xp laptop pc. When the user connects his
laptop pc to an external screen projector things dont work very well. Every
click on the combobox seem to reduce the size of labels and the size of the
fonts in the combobox drop-down list. The picture on the wall screen soon
becomes unreadable due to reduced size.

I have used excel many times with this screen projector and it works fine.
It seems like event handling in vba in some way changes screen resolution.
What may be wrong?

Regards

Tore