WinXP and Vista compatible

Question

I developed the application using also third-party components (developed on D7, WinXP). When I deploy this application on XP, everything works fine. When I run it in Vista, the application stops working properly:

• The buttons on the toolbar do not change the same when I switch the visibility on / off, which is why (third-party) skins do not have the proper attachment, and then look ugly. It bothers, it annoys, but it is not fatal, as the next point.

• The third-party text messaging component stops writing. I have written several routines that allow you to write on this component under certain circumstances. It was a big shock to learn that I could not write anything (perhaps these routines return false for writing, but I see no reason why this should work fine on XP, but not on Vista).

The application starts (finally), but not as intended !!!!

I would like to debug it, but how?

• Should I install Delphi 7 on this problematic Vista computer and compile it? (here it is, what I'm going to do ...)
• Is this a third-party component problem?
• Is it possible to use some compiler directives to ensure that the application will run flawlessly on Vista? (to be honest, I don't know if Vista will require at all).
• Delphi 7 Vista?

: Win98, ...

- ​​?

Answer 1

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Answer 2

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Answer 3

I never explored, but I noticed that in some applications that I have, in all skin modes (XP-teletubbie and Vista / W7, not classic) I had artifacts with any delphi verrsions if I overlay buttons and tags directly on tframes or ttabsheets.

The problems disappeared when I inserted a panel between them.