Sendmessage, listbox & itemdata

Hello
I can, with sendmessage, fill the text of a listbox.
But, how, with sendmessage, fill the itemdata of a listbox?
Code needed.
Regards
trodriAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

rmichelsCommented:
Not sure about this, but ItemData appears to be an extension of the standard Microsoft listbox.  The VB control provides this, above and beyond a listbox.  Also in C++, the object wrapper around the listbox appears to provide the itemdata property.

But...hang on for more comments..cause I could be wrong.
0
mrmickCommented:
You can find examples that demonstrate using sendmessage and the listbox as well as many other great VB examples at the following URL:

http://home.sprynet.com/sprynet/rasanen/vbnet/default.htm

Click Code Library on the left, List & Combo on the center left.

0
trodriAuthor Commented:
Sorry, i need code here
0
Big Business Goals? Which KPIs Will Help You

The most successful MSPs rely on metrics – known as key performance indicators (KPIs) – for making informed decisions that help their businesses thrive, rather than just survive. This eBook provides an overview of the most important KPIs used by top MSPs.

mrmickCommented:
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Const LB_SETITEMDATA = &H19A

Assuming a listbox named "List1" has data, Index contains the index of the item and longData contains the value to be assinged to ItemData.  RC = Return Code.

RC = SendMessage(List1.hwnd, LB_SETITEMDATA, Index, longData)
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
trodriAuthor Commented:
Thanks very much, but....
i try this code using a combobox and i can put values in text using: rc = SendMessage(Combo1.hwnd, CB_ADDSTRING, 0, ByVal ja)
but i can't put any values on itemdata!!! In the two cases, rc is 0.
Can you help me? I give you the points, of course!
Regards
0
mrmickCommented:
Sorry, that's because to set itemdata values in a combobox you must use

Const CB_SETITEMDATA = &H151

instead of the LB_SETITEMDATA



0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Visual Basic Classic

From novice to tech pro — start learning today.