ShowWindow Property in Windows 7 Professional

[SitesMasstec]

Hi colleagues!

When executing a form with some buttons in Windows 7 Professional all the buttons inside the form are invisible, except if the user pass the mouse pointer on them (invisible area used by the button). Each button appears when the mouse pointer is over it, and when the mouse is out, the button desappears again.

This do not happen in Windows 7 Home/Premium, Windows 8, Windows 10, as I have tested.
In the Form, the ShowWindow Property is set to 0 - In Screen (Default).

I have used this property for years, without any problem with buttons in forms. The problem appears on Windows 7 Professional.

To solve this I changed (by chance) the form ShowWindow Property to 1-In Top-Level Form, and the problem was solved!

Why this happens? (I searched in many of my VFP books, but haven't found an answer).

Thank you,





Thank you,
SitesMasstec

 

[Olaf Doschke]

The visibility behaviour you describe is well known for legacy code @SAY @GET having problems with Themes and with Winforms overall. It should not happen with normal VFP forms with normal controls. It does then not happen, if you turn themes off (see _screen.themes and SYS(2700).

Are you perhaps having converted legacy screens to forms somewhere on the way to where you are now?

Bye, Olaf.

 

[SitesMasstec]

Hi Olaf!

No, I have not converted legacy screens to forms. I have created all my forms in VFP9.

But Themes property is set to 'True (default)'


Thank you,
SitesMasstec

 

[Mike Lewis]

But Themes property is set to 'True (default)'

That almost certainly explains the behaviour you are seeing.

I always include the following line near the start of my main program:

[tt]_screen.Themes = .F.[/tt]

It avoids various cosmetic problems, including the one you are seeing.

Mike







__________________________________
Mike Lewis (Edinburgh, Scotland)

Visual FoxPro articles, tips and downloads

 

[SitesMasstec]

Hi Mike!

Well, if I put _screen.Themes = .F. in the main program, and then, the main program calls a form, and in the form property Themes is set to 'True (default)', the form will consider this last property (Themes: 'True (default)', won't it?

Won't it overide the _screen.Themes = .F. in the main program?



Thank you,
SitesMasstec