Altering Cancel Button behaviour (and/or label)

Archive: Altering Cancel Button behaviour (and/or label)

RobGrant
4th January 2005 11:17 UTC

Altering Cancel Button behaviour (and/or label)
Happy new year guys!

I need to alter a Cancel button label (to say "Skip" instead) and obviously get it to simply move on to the next page instead of halting the install process.

I've read about mysterious things such as $HWNDPARENT, FindWindow and SendMessage, all with rather sparse documentation. Can anyone point me at full documentation, or provide documentation within this thread for me and others who will no doubt struggle with this topic?

Thanks guys!

Rob

RobGrant
4th January 2005 12:53 UTC

Done the changing the label bit, here's the code:

Push $0
GetDlgItem $0 $HWNDPARENT 2
  SendMessage $0 ${WM_SETTEXT} 0 "STR:Skip"
Pop $0

The cancel button is marked as 2 in GetDlgItem, that's where that comes from. The rest should be pretty self-explanatory/obvious when you've seen the docs.

Afrow UK
4th January 2005 13:45 UTC

To find dialogue item id's you can use Resource Hacker.
What do you mean by moving the cancel button? Do you want a cancel button on the InstFiles page?

-Stu

RobGrant
4th January 2005 14:28 UTC

Hah! sorry. I mean I want the behaviour of the Cancel button to change, so that instead of cancelling the install, the user is moved onto the next page (i.e. skipping the current page).

Even help with simply removing the prompt (are you sure you want to cancel" or whatever) would be helpful, at least then I could play with MUI_INSTALLOPTIONS_DISPLAY_RETURN stuff.

Thanks

Rob

RobGrant
4th January 2005 15:37 UTC

Bump! I'd love to fix this by the end of the day if poss guys...:) (45mins to go)

kichik
4th January 2005 16:05 UTC

To the best of my knowledge, this is not possible without changing the source code or writing a plug-in that will override the handling of IDCANCEL. Once IDCANCEL is caught, the quit flag is set and NSIS quits immediately after the custom page function returns. There is no way to unset the quit flag.

RobGrant
4th January 2005 16:09 UTC

Aah. Ok, thanks for that, I'll stop searching :) I found a thread where you said something similar but it was from ages ago so I thought things might have changed.

Cheers!

Rob

deguix
5th January 2005 00:48 UTC

There is a way. I created a function that goes to another page on the installer relatively from the current page. I played with it and the callback funcion ".onUserAbort" to try to get the results you expect. What's incredible is that I got it working all right!!!

1) You need to copy this function code into your script.

2) If you want to skip a page for ALL installer pages, copy this below:

Function .onUserAbort
  StrCpy $R9 1 ;It uses the variable $R9
  Call RelGotoPage
  Abort
FunctionEnd

OR

If you only want only ONE page to skip another, you need to:
- use a variable to hold the page index:
  - inside the PreFunction of every page.
  - before InstallOptions plugin first call inside every custom page main function.
- compare this variable inside the callback function.

This is an example:

Page custom CustomPage
Page components Components_PreFunction
Page directory Directory_PreFunction

Function CustomPage
  StrCpy $R8 1 ;This is the first page
  InstallOptions::dialog "C:\Dir\Temp.ini"
  Pop $0
FunctionEnd

Function Components_PreFunction
  StrCpy $R8 2 ;This is the second page
FunctionEnd

Function Directory_PreFunction
  StrCpy $R8 3 ;This is the third page
FunctionEnd

Function .onUserAbort
  StrCmp $R8 1 0 End ;Compare the variable with the
                     ;page index of your choice
    StrCpy $R9 1
    Call RelGotoPage
    Abort
  End:
FunctionEnd

(I based the function "Goto a NSIS Page" from a code inside "io.cpp" that can be found inside "NSIS\Contrib\InstallOptions" folder)

RobGrant
5th January 2005 08:54 UTC

Wow this is fantastic thanks! Question tho - it says it can already see an .onUserAbort function; is this because I'm using the MUI or am I just stupid or what? :)

Cheers

Rob

P.S. thanks again amazing!

RobGrant
5th January 2005 10:02 UTC

Oooh, MUI_CUSTOMFUNCTION_ABORT, right?

deguix
5th January 2005 11:20 UTC

Yeah. I put this information on the Archive page.