Only allowing 1 component per install?

Is there a way to disable the ability to chose more than 1 component everytime someone wants to do the install.

Reason being, as this is acting as a 4 in 1 installer, and they should only be able to install 1 at a time.

Thanks,
Ryan

You can use .onSelChange (Manual chapter 4.7.2.1.8).
This function is called when the user changes the selection.
Then find out which component is selected with SectionGetFlags (Manual chapter 4.9.13.2).
(You have to remember what component was selected previously).
Then use SectionSetFlags to select this component only.

Check out Examples\one-section.nsi

Stu

This is what I have so far, its working for the most part. The only problem I am having, is that I need the default to be all "off/unselected" rather than all selected from the start.

Ideas? Here is my code

Function .onInit
!insertmacro MUI_LANGDLL_DISPLAY
StrCpy $1 ${SEC01} ; Group 1 - Option 1 is selected by default
StrCpy $2 ${SEC02}
StrCpy $3 ${SEC03}
StrCpy $4 ${SEC04}
FunctionEnd

Function .onSelChange

!insertmacro StartRadioButtons $1
!insertmacro RadioButton ${SEC01}
!insertmacro RadioButton ${SEC02}
!insertmacro RadioButton ${SEC03}
!insertmacro RadioButton ${SEC04}
!insertmacro EndRadioButtons

FunctionEnd

OK, I didn't know about these macro's.
Makes it easier ;-)

Well, obviously you have to make all sections unselected by default, by adding the /o flag for each section:

; Sections



Section /o "Option 1" SEC01

SectionEnd



Section /o "Option 2" SEC02

SectionEnd



Section /o "Option 3" SEC03

SectionEnd



Section /o "Option 4" SEC04

SectionEnd



;--------------------------------



; Functions



Function .onInit

!insertmacro MUI_LANGDLL_DISPLAY

StrCpy $1 ${SEC01} ; Group 1 - Option 1 is selected by default

FunctionEnd



Function .onSelChange



!insertmacro StartRadioButtons $1

!insertmacro RadioButton ${SEC01}

!insertmacro RadioButton ${SEC02}

!insertmacro RadioButton ${SEC03}

!insertmacro RadioButton ${SEC04}

!insertmacro EndRadioButtons



FunctionEnd

BTW, you only need to have ${SEC01} copied to $1 in onInit.
This is where the previous selected section is stored.

Got it, all I needed to do was add the /o!


Thanks!

One problem there is once the user has clicked one of the components he's forced to install one of them. You may want to add an additional empty section in the group that the user can select.

Stu