Processes this message to be notified when the user selects an item in the ImageList Control.
idCtlr = (L_INT)LOWORD(wParam) identifier of the control.
wNotifyCode = HIWORD(wParam) will be L_ILN_ITEMSEL.
Pointer to an LILITEMSEL structure containing information about the selected item.
This message is sent to the ImageList Control's window by itself when an Item is selected by the user.
You can use this message instead of the L_ILN_ITEMSEL command notification when you are sub-classing the ImageList Control.
The lIndex member of the LILITEMSEL structure pointed to by lParam will contain the 0-based index of the selected item.
This sample code comes from an example that sub-classes the LEAD ImageList Control Window. This function processes the L_ILM_ITEMSELECTED message to be notified when an item is selected.
LRESULT OnItemSel(HWND /*hWnd*/, UINT /*msg*/, WPARAM /*wParam*/, LPARAM /*lParam*/)
pItem = (pLILITEMSEL)lParam;
wsprintf(szBuf, TEXT("Item %ld was selected\n"), pItem->lIndex);
MessageBox(hWnd, szBuf, TEXT("Selected"), MB_OK);
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