fperez
27th September 2005 16:21 UTC

How to Selectively Disable Page Directory Screen
  Hi,

I'm using the "!insertmacro MUI_PAGE_DIRECTORY" macro as part of the MUI.nsh GUI package. I would like to find a way to selectively show or not show the Page Directory screen.

I want to show it when I initially run the Installer program and the Application has not been installed at all initially. But then I want to run the Installer again to allow the user to install OTHER aspects of the program, but in that case I do not want to allow the user the ability to change the Install Directory; in this case, I want to not show the Directory Page screen shown by the "!insertmacro MUI_PAGE_DIRECTORY" macro and simply skip this Page Directory screen.

How do I do this? Please provide me with specific.

Thanks.

kichik
27th September 2005 17:25 UTC

Take a look at:

http://nsis.sourceforge.net/wiki/Skipping_Pages

glory_man
27th September 2005 17:26 UTC

Use Abort instruction in pre-function.
For example, when your programm was installed some regestry keys were created.
Code like this:

!include LogicLib.nsh
...
var AbortPage
...
!define MUI_PAGE_CUSTOMFUNCTION_PRE "PageAbort" ; if product installed break this page
!insertmacro MUI_PAGE_DIRECTORY
...
Function PageAbort
${If} AbortPage == "yes"
        Abort
${EndIf}
FunctionEnd
...
Function .onInit
...
ReadRegStr $R0 HKLM "Software\My Soft" "Version"
${Unless} ${Errors}
        StrCpy $AbortPage "yes"
${Else}
        StrCpy $AbortPage "no"
${EndUnless}
...
FunctionEnd

fperez
27th September 2005 17:30 UTC

Thanks!

Jamyn
28th September 2005 20:06 UTC

That is a good example! But you don't need the .onInit stuff or the extra "Var AbortPage".
You can do most of the checks/work inside the pre function.

nsh

>...


!define MUI_PAGE_CUSTOMFUNCTION_PRE "PageSkipDir" ; skip if installed

>!insertmacro MUI_PAGE_DIRECTORY

>!define MUI_PAGE_CUSTOMFUNCTION_PRE "PageSkipStartMenu" ; skip if installed

>!insertmacro MUI_PAGE_STARTMENU Application $StartMenuGroup


>...

Function PageSkipDir

   ; ClearErrors

    ReadRegStr $R0 HKLM "Software\My Soft" "Version"

   ; If the key exists (no errors), we've installed the software before.

    ; Use the old install location and skip asking them.

    ${Unless} ${Errors}

    Abort ; skip the next page (Choose install dir)

    ${Else}

    ; Do nothing; show the next page.

    ${EndUnless}

FunctionEnd


; Also works if you're using the StartMenu code (search the forum).

Function PageSkipStartMenu

   ; ClearErrors

    ReadRegStr $StartMenuGroup HKLM"${REGKEY}" StartMenuGroup

   ${Unless} ${Errors}

    ; Ifthe key exists (no errors), weve installed the software before.

    ; Usethe old start menu location and skip asking them.

    Abort

    ${Else}

    ; Donothing; let them see the "choose start menu" page

   ${EndUnless}

>FunctionEnd 

>