Disable Sections for some OS

KonradApril 21, 2003 at 2:04 PM#

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?

kichikApril 21, 2003 at 2:07 PM#

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}.

KonradApril 21, 2003 at 2:42 PM#

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?

kichikApril 21, 2003 at 2:47 PM#

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

KonradApril 21, 2003 at 2:54 PM#

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!

kichikApril 21, 2003 at 2:57 PM#

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

virtlinkApril 21, 2003 at 3:57 PM#

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.