Virtual Listview

[ragdog]

Hello Community

I want an example with a Virtual Listview

I set the style to LVS_OWNERDATA and lock this before fill the ListView

Code Select Expand

invoke LockWindowUpdate,hLV

;Fill listview items

invoke  SendMessage,ebx,LVM_GETITEMCOUNT,0,0
mov     lvi.iItem,eax
mov     lvi.imask,LVIF_TEXT
mov     lvi.iSubItem,0
m2m     lvi.pszText,pData
invoke  SendMessage,ebx,LVM_INSERTITEM,0,addr lvi


nvoke SendMessage,hLV,LVM_SETITEMCOUNT,nItems,LVSICF_NOINVALIDATEALL or LVSICF_NOSCROLL
invoke LockWindowUpdate,NULL

But After add items is this listView empty.

Have you an idea or a good example ?

regards,

[Tedd]

Are you handling the LVN_GETDISPINFO notifications?

[ragdog]

Hi

Must i handling LVN_GETDISPINFO?

Gives any good Tutorial about it or good example?

[Tedd]

Must i handling LVN_GETDISPINFO?

Yes, that is how it works.

The whole point is that the listview does not store any data for the items (because you already have it and don't want to waste memory duplicating it all) -- you only tell it how many there are (LVM_SETITEMCOUNT). Then, when the listview needs to display the data for specific items, it requests the information from you through LVN_GETDISPINFO -- so you fill in the LVITEM structure with the data for the item at the given index, and that is what it displays for that item.

Example attached 8)

[ragdog]

Thank you Tedd

is well explained and the source is well written to understand it.

I test it this days in my project.

Regards,