How can I modify the text in the MUI_WELCOME_PAGE when using MUI2 for NSIS?

Question

I want to add a label displaying the full version-string in the welcome screen in the installer I am creating using NSIS with MUI2.

I have searched for info on how to do this, but only found references to using MUI_INSTALLOPTIONS* which I found ws deprecated for MUI2. Another one referred to the newer versions using INSTALLOPTIONS* with the same options, but I could not get it working. I finally also found a reference to using nsDialogs for this - which is what I am using for my custom pages. However - I found no reference or samples on how to change any of the existing pages that comes with MUI2.nsh.

I found a way to change the MUI_HEADERTEXT, but that doesn't affect the welcome-screen. I wish there was a way to also change the welcometext. Maybe using MUI_WELCOMETITLE and MUI_WELCOMEBODY or similar.

Answer 1

There is MUI_WELCOMEPAGE_TEXT but it is only useful if you want to change all of the text and not just append something.

During the show function for the page, you can change the text of any control:

outfile test.exe
requestexecutionlevel user

!include MUI2.nsh

#!define MUI_WELCOMEPAGE_TEXT "New text goes here"
!define MUI_PAGE_CUSTOMFUNCTION_SHOW MyWelcomeShowCallback
!insertmacro MUI_PAGE_WELCOME
!insertmacro MUI_PAGE_INSTFILES
!insertmacro MUI_LANGUAGE "English"


Function MyWelcomeShowCallback
SendMessage $mui.WelcomePage.Text ${WM_SETTEXT} 0 "STR:$(MUI_TEXT_WELCOME_INFO_TEXT)$\n$\nVersion: foo.bar"
FunctionEnd

Section
SectionEnd

..or add a new control:

outfile test.exe
requestexecutionlevel user

!include MUI2.nsh

!define MUI_PAGE_CUSTOMFUNCTION_SHOW MyWelcomeShowCallback
!insertmacro MUI_PAGE_WELCOME
!insertmacro MUI_PAGE_INSTFILES
!insertmacro MUI_LANGUAGE "English"


Function MyWelcomeShowCallback
${NSD_CreateLabel} 120u 150u 50% 12u "Version: foo.bar"
Pop $0
SetCtlColors $0 "" "${MUI_BGCOLOR}"
FunctionEnd

Section
SectionEnd