Problem to delete installer when cancel

Hello,

I am working on an updater. Once the download is done, the updater is automatically launched, then overwrite some files and finally delete itself (using the SelfDel plug-in)

Function .onInstSuccess

 

  SelfDel::del



FunctionEnd

This works well.

However the updater is not deleted in the following case.

At the very beginning of the updater, the user can choose language:

Function .onInit

	

    ;display multilanguage list

    !insertmacro MUI_LANGDLL_DISPLAY



FunctionEnd

If the user press "cancel" in the window that appear to choose the language, the updater exit and the updater file is not deleted.

How can I deal with this case?

Thanks in advance

Have you tried calling selfdel from another callback function, such as .onGUIEnd or .onInstFailed?

Thanks for your reply MSG,

I just tried calling SelfDel from inside the .onGUIEnd and .onInstFailed function but the updater has not been deleted.

I have also tried calling from inside .onUserAbort but this gave me a compilation error. (function .onUserAbort already defined).

Is the .onUserAbort already defined in the macro ?

!insertmacro MUI_LANGDLL_DISPLAY

Another idea?

Ah, yes, onuserabort and some other callbacks are used in MUI. You have to use this instead:

!define MUI_CUSTOMFUNCTION_ABORT MyOnUserAbort

Function MyOnUserAbort
SelfDel::del
FunctionEnd


See http://nsis.sourceforge.net/Docs/Mod...02/Readme.html (search for 'custom functions')

I used this to enable Cancel Button during installing .

GetDlgItem $0 $HWNDPARENT 2
EnableWindow $0 1

And i used SelfDel plug-in but it only work when extract the first file . If i click cancel button when extracting above 2nd file , it dont work .

Thanks for these answers.
I have tried this

!define MUI_CUSTOMFUNCTION_ABORT MyOnUserAbort



Function MyOnUserAbort

SelfDel::del

FunctionEnd

But this doesn't work. The updater is still not deleted if user press cancel in the window in which he can choose the language.

Concerning the solution proposed by Kshiro: I don't see very well how to use this code. The cancel button is already enable. I just want to remove installer if user press cancel.

This is because the MUI_LANGDLL_DISPLAY macro calls Abort when the user canceled the Languages dialog, which causes an instant quit of the installer (see chapter 4.7.2.1.2 of the NSIS user manual).

I think this some sort of bug in MUI.

You can prevent this by removing

${if} $LANGUAGE == "cancel"

     Abort

${endif}

from the MUI_LANGDLL_DISPLAY macro (in Localization.nsh for MUI2)
You need to add this then in the .onInit function after calling MUI_LANGDLL_DISPLAY.

Maybe you should post a feature request for a MUI_CUSTOMFUNCTION_LANGDLL_ABORT MyOnUserAbort or something similar.

Stu

Thanks for these answers

So I have finally edit the file Localization.nsh (located in Program Files\NSIS\Contrib\Modern UI 2). I have add the following line

Pop $LANGUAGE

${if} $LANGUAGE == "cancel"

      SelfDel::del   ;remove updater file 

      Abort

${endif}

and let in my installer the functions

!define MUI_CUSTOMFUNCTION_ABORT MyOnUserAbort



Function  MyOnUserAbort

    SelfDel::del  ;remove updater file

FunctionEnd

	

Function .onInstSuccess

    SelfDel::del   ;remove updater file

FunctionEnd

So that, the updater file is deleted:

-If the user directly press cancel during the language selection
-If the user cancel the installation
-after the installation was successful.

Thanks again for your help