disable next button in a custom page

출처: http://forums.winamp.com/showthread.php?postid=2056841

disable next button in a custom page

I am having a weird problem. I can not seem to be able to disable the install button in the following script. Just to make sure I am doing everything right I played with disabling the Cancel button and it worked! But I have no idea why the Install button is stubborn or is it me being stupid?

The script creates a simple license custom page and I want to disable the Install button until the I Agree Radio button is selected otherwise it needs to stay disabled.

PHP:

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[Settings]
NumFields=3
[Field 1]
Type=Text
Left=10
Right=-10
Top=10
Bottom=110
State=blabla
Flags=MULTILINE|VSCROLL|READONLY

[Field 2]
Type=RadioButton
Text=I AGREE
Flags=NOTIFY
State=0
Left=10
Right=110
Top=120
Bottom=128

[Field 3]
Type=RadioButton
Text=I DO NOT AGREE
Flags=NOTIFY
State=1
Left=10
Right=110
Top=131
Bottom=139


---

 

PHP:

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!define FILE_INI           "LicensePage.ini"
!include "MUI.nsh"
!include "Sections.nsh"
!include WinMessages.nsh

Page custom License LicenseLeave ""
!insertmacro MUI_PAGE_INSTFILES
OutFile "test.exe"

Section "dummy"
SectionEnd


Function .onInit
        !insertmacro MUI_INSTALLOPTIONS_EXTRACT ${FILE_INI}
FunctionEnd

Function License
        !insertmacro MUI_HEADER_TEXT "License the product" "Please read the license carefully."
        InstallOptions::initDialog /NOUNLOAD "$PLUGINSDIR\${FILE_INI}"
        GetDlgItem $1 $HWNDPARENT 1
        EnableWindow $1 0
        InstallOptions::show
FunctionEnd

Function LicenseLeave
        ReadINIStr $0 "$PLUGINSDIR\${FILE_INI}" "Settings" "State"
        IntCmp $0 0 validate
        IntCmp $0 2 I_AGREE
        IntCmp $0 3 I_DO_NOT_AGREE
        Abort
        I_DO_NOT_AGREE:
                GetDlgItem $1 $HWNDPARENT 1
                EnableWindow $1 0
                GetDlgItem $1 $HWNDPARENT 2
                EnableWindow $1 0
                Abort
        I_AGREE:
                GetDlgItem $1 $HWNDPARENT 1
                EnableWindow $1 1
                GetDlgItem $1 $HWNDPARENT 2
                EnableWindow $1 1
                Abort
        validate:
FunctionEnd


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