How to tweak old legacy delphi exe to work well in Win7, there are no source codes, but luckily just one small GUI issue:
The main window size is fixed to be too narrow and now the text in control does not fit to screen. adjusting compatibility settings do not help at all.
Supposedly the form uses system default fonts, but on Windows Vista/7 they seem to be larger than on XP. As the designer of the application seems to have adjusted the size of the form to just fit the controls for XP default font size, I guess you'll have no other option but
It is likely that the application is configured for standard font size and you are using a larger font size. A screen shot would be helpful. Anyway, usually the window size is in a resource in the application but it depends how the application has been written. You could use a resource tool to change the resource in the exe file directly (not easy to find exactly which form it is). If you have the source code, the application can be edited and recompiled...
A good resource editor which works with older Delphi applications is Resource hacker. I believe it has a few issues with forms which use frames, but other than that it is worth a try. You should be able to export the DFM from the executable, adjust the size, and the replace the old with the new using this utility.