How to increase AutoPopDelay value for ListViewItems in WinForms?

Question

You know that each item in a ListView has a ToolTipText property and that\'s all! There is no property like AutoPopDelay to set its displa

Answer 1

MouseHover fires once per control - so is never updated as you move to different items.

Use ListView.ItemMouseHover to accomplish what you need.

void listView1_ItemMouseHover(object sender, ListViewItemMouseHoverEventArgs e)
{
    this.toolTip1.SetToolTip(e.Item.ListView, e.Item.ToolTipText);
}

Answer 2

To Hans Passant.

I used this code in MouseHover event:

    Point pntOnList = lsvSource.PointToClient
        (new Point(Cursor.Position.X, Cursor.Position.Y));
    ListViewItem lsviUnderMouse =
        lsvSource.GetItemAt(pntOnList.X, pntOnList.Y);
    if (lsviUnderMouse != null)
    {
        ttipDetails.SetToolTip(lsvSource, lsviUnderMouse.ToolTipText);
        ttipDetails.Active = true;
    }
    else
    {
        ttipDetails.Active = false;
    }

But it behaves strangely. Actually the ToolTip's text is always outdated.

Answer 3

You can get the ToolTip of the ListView using LVM_GETTOOLTIPS, then send a TTM_SETDELAYTIME message to the tooltip and set its delay by passing TTDT_AUTOPOP as wparam and the delay in millisecond as lparam.

Also make sure ShowItemsToolTip property of the ListView has been set to true and the items have tooltip.

[System.Runtime.InteropServices.DllImport("user32.dll")]
static extern IntPtr SendMessage(IntPtr hWnd, int msg, int wParam, int lParam);
const int LVM_GETTOOLTIPS = 0x104E;
const int TTM_SETDELAYTIME = 0x403;
const int TTDT_AUTOPOP = 2;

private void button1_Click(object sender, EventArgs e)
{
    var tooltip = SendMessage(listView1.Handle, LVM_GETTOOLTIPS, 0, 0);
    SendMessage(tooltip, TTM_SETDELAYTIME, TTDT_AUTOPOP, 10000 /*milliseconds*/);
}

To set the initial delay or the reshow delay, set the following values for wparam:

const int TTDT_AUTOMATIC = 0;
const int TTDT_AUTOPOP = 2;
const int TTDT_INITIAL = 3;