Making a password work - nsis

Question

So what you gave me works great.
Now the question is how do I set it so the password page has a message on it asking for you to inter your password This is what I have so far.
Function leave
${NSD_GetText} $hwnd $0
${If} $0 != "web9^root"
MessageBox MB_OK "Please enter a valid security code"
Abort
${EndIf}
FunctionEnd
Function pre
nsDialogs::Create 1018
Pop $dialog
${NSD_CreatePassword} 0 0 50% 8% ""
Pop $hwnd
nsDialogs::show
FunctionEnd
======================
so i have the following script set up to run,
!include "nsDialogs.nsh"
!include "winmessages.nsh"
!include "logiclib.nsh"
OutFile "test.exe"
Page Custom pre
var dialog
var hwnd
Function pre
nsDialogs::Create 1018
Pop $dialog
${NSD_CreatePassword} 0 0 50% 8% "web9^root"
Pop $hwnd
SendMessage $hwnd ${EM_SETPASSWORDCHAR} 149 0 # 149 = medium dot
nsDialogs::Show
FunctionEnd
Section ""
SectionEnd
How do I make it so that if you do not know the password it will not let you pass. I also need to know who to set it so that the password is not already in the text feild. Can you all help me with this

Answer 1

you will have to add a leave function for that nsdialogs page...
Page custom pre leave
...and there you verify the password...
Function leave
${NSD_GetText} $hwnd $0
${If} $0 != "yourPassword"
MessageBox MB_OK "Wrong password"
Abort
${EndIf}
FunctionEnd
if you don't want the password in that field, just leave it empty when creating the dialog!