ASM Community

Hello,

I've created a dialog on which I have a listbox. To fill the listbox I use the following code:

invoke  SendMessage, hListbox, LB_ADDSTRING, 0, addr TheDescription

invoke  SendMessage, hListbox, LB_SETITEMDATA, eax, addr TheAction

This works just fine but when I want to retrieve the ItemData (not the visible text) I use the following code:

invoke SendMessage, [hListbox], LB_GETSEL,0,0

mov    IndexItem, eax

INVOKE SendMessage, [hListbox], LB_GETITEMDATA, IndexItem, 0

mov    Bufje, eax

INVOKE MessageBox, NULL, addr Bufje, addr szDisplayName, MB_OK+MB_ICONINFORMATION ;Show the retrieved ItemData

However, this does not work, all I get is a messagebox without any text.

Does anyone know how to solve this problem?

I have tried that and it still gives me no result. Just an empty Messagebox...

Could it be that my input is not valid?
When I ask the value of TheAction with a messagebox right before the LB_SETITEMDATA it returns the correct data.

pcdiks you are requesting whether the item is selected or not using the LB_GETSEL message and you should be trying to get the index number of the selected item.

so instead of:

invoke SendMessage, , LB_GETSEL,0,0
mov IndexItem, eax

you will replace with:

invoke SendMessage, hListbox, LB_GETCURSEL,0,0
mov IndexItem, eax

this will get the selected items index number you will need when you send the message LB_GETITEMDATA

pcdiks,

You might want to try this example.
I'am not sure but I thing that LB_GETITEMDATA and LB_SETITEMDATA works with an ownerdraw listbox.

Anyway. just click on the items in the listbox and you'll see another text appear.

Guy