Konrad
21st April 2003 17:04 UTC

Disable Sections for some OS
  I want to disable (set read-only flag) and unselect a section for some operating systems. If I do it it in .onInit it will not work. Here is the code:

Call IsWindowsAboveNT4And98FE

StrCmp$0 ${TRUE} Done

Push$0

SectionGetFlags${Sec25} $0

IntOp$0 $0 & ${SECTION_OFF}

>IntOp $0 $0 | ${SF_R0}

>SectionSetFlags ${Sec25} $0

Pop$0

Done: 

The function IsWindowsAboveNT4And98FE definitely work. But even if it sets $0 not to true it doesn't work.
Can I use the variables Sec25 which are set by the Section command. What else do I have to consider?

kichik
21st April 2003 17:07 UTC

It's O (the letter) not 0 (the number) in RO.
You have to put this code after the section is defined so the compiler will recognize ${sec25}.

Konrad
21st April 2003 17:42 UTC

Setting the read-only flag works. But I want to clear the selection, too. It seems that the InstType overrides the selection changes in .onInit. Is that right? When do I have to call SectionSetFlags?

kichik
21st April 2003 17:47 UTC

If it's in an InstType too then get it out if it using SectionSetInstTypes.

Konrad
21st April 2003 17:54 UTC

How I can set another InstType than index 0 to be the standard. I would like to delete or hide one inst-type in the combo box, because it is not valid for some operating systems.
Is that possible?
Thanks!

kichik
21st April 2003 17:57 UTC

No, you can't hide installation types. You can only change which sections belong to them.

virtlink
21st April 2003 18:57 UTC

Actually, I think that there should be some mayor changes to the InstType and Section part of the installer. Since that's the most important part for the end-user, I suggest that there should be more instructions available to work with them. For example: It should be possible to make (sub)sections invisible (by putting a '-' in front of it?) and to make installation types invisible.