Main events and mouse response functions of CListCtrl

Main Events:

Lvn_begindrag the left mouse button is being triggered for drag-and-drop operations (resulting when the left mouse button starts dragging items in a list view control)

Lvn_beginrdrag The right mouse button is being triggered for drag-and-drop operations (resulting when the right mouse button starts dragging items in a list view control)

Lvn_beginlabeledit start editing the text of an item

Lvn_columnclick click a column (resulting when the mouse clicks the column header of a list view control)

Nm_click when the mouse clicks the list view Control

Lvn_columnclick Click Columns

Lvn_deleteallitems Delete all items

Lvn_deleteitem Deleting an item

NM_DBLCLK occurs when the mouse double-clicks the list view Control

Lvn_endlabeledit ending edits to item text

Lvn_getdispinfo request information that needs to be displayed

Lvn_getinfotip additional text information that is requested to be displayed in the ToolTip window

Lvn_hottrack Mouse over an item

Lvn_insertitem When you insert a project into a list view control

Lvn_itemactivate activating an item

Lvn_itemchanged an item has changed

Lvn_itemchanging a project is changing

Nm_killfocus occurs when the View Table column chart control loses focus

Lvn_keydown a key is pressed

Lvn_marqueebegin Start a border selection

Nm_outofmemory When a memory overflow occurs

Lvn_odcachehint the contents of the display area of the virtual list control have changed

Lvn_odstatechanged an item or a range of items in a control of a virtual list has changed

Lvn_odfinditem requires the owner to find a specific callback item

Nm_rclick when the right mouse button is clicked on a list view control

NM_RDBLCLK when the right mouse button is double-clicked on a list view control

Nm_setfocus when a list view control receives focus

Lvn_setdispinfo the parent window must update the information maintained by the control for the item

notes:

Hdn:header Notify
Lvn:listview Control Notify
Nm:notify Message
Tvn:treeview Control Notify

For example:

handling of lvn_itemchanged event messages

In. CPP found in the following two paragraphs, between them to add bold that the sentence, the third parameter is the function name, you can write freely ,

Begin_message_map ()

on_notify (lvn_itemchanged, Idc_list1, OnItemchangedList1);

End_message_map ()

In. The addition of afx_msg void OnItemchangedList1 (nmhdr* pnmhdr, lresult* PResult) in H is considered a function declaration.

In. Add functions in CPP:

void C***dlg::onitemchangedlist (nmhdr* pnmhdr, lresult* pResult)
{
nm_listview* Pnmlistview = (nm_listview*) pnmhdr;

if (pnmlistview->uchanged==lvif_state)
{
if (Pnmlistview->unewstate & lvis_selected)
{
Working with Content
int nitem=pnmlistview->iitem;
CString Value[6];
for (int i=0;i<6;i++)
{
Value[i]=m_list.getitemtext (Nitem,i);
}
}
}

*presult = 0;
}

The two if conditional sentences in the message handler must be there, otherwise there may be multiple entry handling issues.

Mouse Double-click on the handling of list item events

Response NM_DBLCLK Message:

void Cdissalarydlg::ondblclklist (nmhdr* pnmhdr, lresult* pResult)
{
Nm_listview *pnmlistview= (Nm_listview *) Pnmhdr;

int nitem=pnmlistview->iitem;
if (nitem>=0 && nitem<m_list.getitemcount ())//Determine if the double-click position is above the list item with data
{
.............
}

*presult = 0;
}

The IF statement in a message handler is important to determine whether the double-click position is above the list item with the data. Because the NM_DBLCLK message is a CListCtrl control (overall) message, the message is generated if the event is executed within the scope of the CListCtrl control, not necessarily on the list item that has the data.