Dumb question:

What is the best way to determine the OS platform at runtime?

I would like to be able to position things like dialog form buttons dependent on the OS.

Thanks,

Dumb question: What is the best way to determine the OS platform at runtime?

You can already at compile time.

http://wiki.lazarus.freepascal.org/Code_Conversion_Guide#Useful_compiler_variables_.2F_defines_.2F_macros

I would like to be able to position things like dialog form buttons dependent on the OS.

For common buttons you can use TButtonPanel.

Mattias

Thanks Mattias. I was aware of the defines but thought maybe there was a built-in function in LCL that returned an enumerated type or constant or something similar.

No problem, I will just create a singleton that relies on the defines to return an enumerated type of my own.

> I would like to be able to position things like dialog form buttons > dependent on the OS. For common buttons you can use TButtonPanel.

Thanks I will this rearrange itself depending on the OS? Is that what you are saying? I have not experience with this component.

Thanks again,

Thanks Mattias. I was aware of the defines but thought maybe there was a built-in function in LCL that returned an enumerated type or constant or something similar.

No problem, I will just create a singleton that relies on the defines to return an enumerated type of my own.

Is there a complete list of the defines available. That link seems to show just a few in examples.

> I would like to be able to position things like dialog form buttons > dependent on the OS. For common buttons you can use TButtonPanel.

Thanks I will this rearrange itself depending on the OS? Is that what you are saying? I have not experience with this component.

Thanks again,

Lee Jenkins wrote

Dumb question: What is the best way to determine the OS platform at runtime?

That depends what you expect. OS and architecture are mostly compiletime. FPC/Lazarus mostly busies itself with a very course "os-architecture" combination, but doesn't care much about versions and variants (e.g. win9x and winNT are both "win32")

IOW {$ifdef linux} will return "linux" for a Linux binary, even when it is running on FreeBSD. The opposite would probably also be true if Linux had a FreeBSD emulation mode.

This information can be retrieved in String form using the {$I } directive, as documented in the FPC documentation:

http://www.freepascal.org/docs-html/prog/progsu38.html#x45-430001.1.38

If you want more detailed information, probably you need to go OS specific.

However the unices have a call for this, fpuname:

http://www.freepascal.org/docs-html/rtl/baseunix/fpuname.html

which makes it at least semi-generic.

Yes.

Mattias