[RESOLVED] How to send an LVN_COLUMNCLICK message?

[MasterDucky]

Hello

I read it on MSDN that it should be sent through WM_NOTIFY.

And that the iSubItem number has to be put in a NMLISTVIEW structure.

But where do I put the NMLISTVIEW structure to tell it to which column to click on?

NMHDR nmh;
nmh.code = LVN_COLUMNCLICK;    // Message type defined by control.
nmh.idFrom = GetDlgCtrlID(hListView);
nmh.hwndFrom = hListView;
 
NMLISTVIEW nmlv = {0};
nmlv.iItem = -1;
nmlv.iSubItem = 1;
 
SendMessage(hwnd, WM_NOTIFY, nmh.idFrom,(LPARAM)&nmh);

https://docs.microsoft.com/en-us/win...rols/wm-notify

https://docs.microsoft.com/en-us/win...vn-columnclick

[2kaud]

LVN_COLUMNCLICK is not a message, but a notification received via the WM_NOTIFY message when a column header is clicked.

An example of use from some code is:

LPNMHDR tc;
LPNMLISTVIEW pnmlv;
DWORD subitm;

// g_hwndLV is the window handle to the list view control

case WM_NOTIFY:
    tc = (LPNMHDR)lParam;

    if ((tc->hwndFrom == g_hwndLV) && (tc->code == LVN_COLUMNCLICK)) {
        pnmlv = (LPNMLISTVIEW)lParam;
        subitm = pnmlv->iSubItem;
        // ...
    }

[VictorN]

Try

NMLISTVIEW nmlv = {0};

nmlv.nmh.code = LVN_COLUMNCLICK;    // Message type defined by control.
nmlv.nmh.idFrom = GetDlgCtrlID(hListView);
nmlv.nmh.hwndFrom = hListView;
 
nmlv.iItem = -1;
nmlv.iSubItem = 1;
 
SendMessage(hwnd, WM_NOTIFY, nmh.idFrom,(LPARAM)&nmlv);

[MasterDucky]

Of course, how could I miss it that NMHDR hdr; was also a member of NMLISTVIEW structure.

Ive learned something and its working, thank you very much Victor!

[VictorN]

You are welcome!