CODEWITHSUNDEEP
mfcclistctrl
Fabio C.
Fabio C.

Reputation: 347

Force update of a virtual CListCtrl

I have a CListCtrl containings about 2500 differents elements consisting of a 48x48 icon and text.

Due to the amount of data I implemented it as a virtual list providing 

ON_NOTIFY(LVN_GETDISPINFO, IDC_LST_ICONS, &CWGDIconSearchDlg::OnLvnGetdispinfoLstIcons)
ON_NOTIFY(LVN_ODFINDITEM, IDC_LST_ICONS, &CWGDIconSearchDlg::OnLvnOdfinditemLstIcons)

My problem is when I change list content these callback get never called.

How can I force it?

Upvotes: 4

Views: 2385

Answers (1)

Jabberwocky
Jabberwocky

Reputation: 50912

Windows cannot know that you have changed an item in virtual list.

In order to trigger a redraw of your CListCtrl, you must call yourcontrol.Invalidate() which will trigger a repaint of your control.

Upvotes: 5

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