hide sections on component page

hey, me again :P


is it possible to hide sections on the components-page if the required file is missing?


atm it looks like this:

Section ""

AddSize 59118

SetOutPath "$INSTDIR"

    SetOverwrite on

SetOverwrite ifdiff

Nsis7z::ExtractWithDetails "$EXEDIR\data\data.7z" "Install Update: %s"

SectionEnd



Section "Pack 2"

AddSize 22811

SetOutPath "$INSTDIR"

    SetOverwrite on

SetOverwrite ifdiff

Nsis7z::ExtractWithDetails "$EXEDIR\data\data01.7z" "Install Pack 2: %s"

SectionEnd





Section "Pack 3"

AddSize 71739

SetOutPath "$INSTDIR"

    SetOverwrite on

SetOverwrite ifdiff

Nsis7z::ExtractWithDetails "$EXEDIR\data\data03.7z" "Install Pack 3: %s"

SectionEnd

what i want is, if data03.7z is missing, that the installer hides section "Pack 3" on components page, so that only "Pack 2" is shown.
is that possible?

it's possible, look at Sections.nsh - however, hiding them is not enough you have to make sure it's not executed (a change of installtype can select that hidden section)

do you have a short example of this?