andyb2000
7th November 2007 12:18 UTC

ListBox and selected value
  Hello all,
I've been dabbling with NSIS for a bit now, and have a couple of decent installers working.

However this last one is really confusing me! I have a ListBox on a page, that I populate then need to retrieve the value on the subsequent page. I cannot see to figure out the right query, as tried many, those from forums, etc and don't seem to get it right!

    nsDialogs::Create /NOUNLOAD 1018

    Pop$0


   ${NSD_CreateText} 0 47 30% 12u 200

    Pop $EDIT

>${NSD_CreateListBox} 0 87 40% 32u ""

    Pop $huntgroup

    SendMessage $huntgroup${LB_ADDSTRING} 0 "STR:entry1"

   SendMessage $huntgroup ${LB_ADDSTRING} 0 "STR:entry2"

   SendMessage $huntgroup ${LB_ADDSTRING} 0 "STR:entry3"


   ${NSD_CreateLabel} 0 10u 75% 40u "Select your hunt group from the drop down menu"

   Pop $0



   ${NSD_GetText} $EDIT $myvar1

    

    SendMessage $huntgroup${LB_GETSEL} 0 0 $huntgroup 

>

I have tried several different ways of getting the value and all either return 0 or return a 4 or 5 digit number (hwid perhaps?)

Thanks in advance for anyone who can help!

kichik
7th November 2007 19:38 UTC

SendMessage $huntgroup ${LB_GETSEL} 0 0 $0
System::Call user32::SendMessage(i$huntgroup,i${LB_GETTEXT},ir0,t.r0)
MessageBox MB_OK $0

pospec
28th November 2007 22:02 UTC

LB_GETSEL
  I don't understand it. I've tried kichik's tip and it didn't work. Sorry, but I'll post whole script. The messagebox shows empty value.

nsh


Name "NSD: Listbox"

>OutFile "listbox.exe"


>Page custom nsDialogsPage

Page custom validate

Page instfiles


>Var LISTBOX_1


>Function nsDialogsPage

  nsDialogs::Create /NOUNLOAD 1018

  Pop$0

 ${NSD_CreateListBox} 200 35 20% 12u ""

  Pop $LISTBOX_1

  SendMessage $LISTBOX_1${LB_ADDSTRING} 0 "STR:0"

 SendMessage $LISTBOX_1 ${LB_ADDSTRING} 0 "STR:1"

 SendMessage $LISTBOX_1 ${LB_ADDSTRING} 0 "STR:2"

 SendMessage $LISTBOX_1 ${LB_ADDSTRING} 0 "STR:3"

 nsDialogs::Show

FunctionEnd


>Function Validate

  SendMessage $LISTBOX_1${LB_GETSEL} 0 0 $1

  System::Call user32::SendMessage(i$LISTBOX_1,i${LB_GETTEXT},ir1,t.r1)

 MessageBox MB_OK $1

FunctionEnd


Section

SectionEnd 

>

I also tried the LB_GETCURSEL message but it returns '0'. Where is the problem and how does it work?

kichik
28th November 2007 22:16 UTC

The page, including the list box, is destroyed by the time the validate function is called. You must use that code in the leave callback function of the page.

Page custom nsDialogsPage validate

You also need to replace LB_GETSEL with LB_GETCURSEL.

pospec
28th November 2007 22:20 UTC

Thank you very much!

pospec
28th November 2007 22:34 UTC

And how can I create ComboBox? I tried to change ${NSD_CreateListBox} -> ${NSD_CreateComboBox} and rename all messages LB_ -> CB_, but combobox is empty. Is there something special to do when creating combobox?

kichik
28th November 2007 22:55 UTC

That's probably because the combo is too short to display the selection and can only display the text field. Try 50u instead of 12u.

pospec
29th November 2007 06:58 UTC

Aaah, I see! Actually, I am interested in "Drop-down list" :-) Is it possible to mix listboxes and dropdown lists on one page?

pospec
29th November 2007 08:44 UTC

I have combobox with dropdown list style, but I had to edit nsDialogs.nsh and add |${CBS_DROPDOWNLIST} at the end of !define __NSD_ComboBox_STYLE. Can I change (combobox control) style from script, not from .nsh file?

pospec
29th November 2007 12:08 UTC

And another question - is there any difference when sending "gettext" message to listbox or combobox? I have combobox and all CB_GETTEXT, LB_GETTEXT and CB_GETLBTEXT return empty value.

validatePage 

  SendMessage $CB_kontrola${CB_GETCURSEL} 0 0 $kontrola ### index is OK

 System::Call user32::SendMessage(i$CB_kontrola,i${CB_GETLBTEXT},i$kontrola,t.$1)

 messagebox mb_ok "$kontrola $1" 

 System::Call 

FunctionEnd 

>

kichik
29th November 2007 17:05 UTC

Currently, you can only call nsDialogs::CreateItem manually to add extra styles to the defaults defined in nsDialogs.nsh.

The problem with your text retrieval mechanism is that you pass $1 instead of r1. $1 is translated to the actual value of $1 and so the System plug-in doesn't know it needs to write something into $1.

pospec
30th November 2007 12:30 UTC

Sorry kichik, I tried $r1 and it is still empty. :confused:
My code is below:

SendMessage $CB_kontrola ${CB_GETCURSEL} 0 0 $kontrola ### index OK

>System::Call user32::SendMessage(i$CB_kontrola,i${CB_GETLBTEXT},i$kontrola,t.$r1)

>messagebox mb_ok "$kontrola $r1" 

kichik
30th November 2007 12:32 UTC

r1, not $r1.

pospec
30th November 2007 12:35 UTC

THANKS! :up:

doniking
4th April 2010 16:47 UTC

please show us the correct codes for your listbox and combobox page