VB.Net - Buttons missing on one client

We're facing a strange problem here. One of our users cannot see two buttons on a form, that everybody else can see. I'm not sure if the buttons are not there or the window is smaller than it should be. The size of this window is fixed, so it cannot be adjusted manually. (it is like a pop-up window informt of the main window)

Our application is used by employees of our company all over the world. So they all have windows xp in different languages and their regional settings differ. But I can't see how that would开发者_Go百科 make a difference.

Does anyone have an idea?

A reason for this might be that the user changed the DPI setting on its machine. Typically you would change that in the control panel, in the Display settings you can choose to have a font size of 100%, 125% and 150%. This affects the DPI and might push winforms controls further down the form, making them "invisible" (below the bottom boundary of the form).

Here are instructions on how to change DPI settings on Windows XP.

If this is the cause for your problem, you have to make sure your forms scale properly. Look at the MSDN documentation for automatic scaling.