private void OnToolStripDropDownClosing(object sender, ToolStripDropDownClosingEventArgs e)
{
ToolStripDropDown tToolStripDropDown = sender as ToolStripDropDown;
//use pointer location to see if the user is inside the menu item
Point p = tToolStripDropDown.PointToClient(MousePosition);
if (tToolStripDropDown.DisplayRectangle.Contains(p))
{
e.Cancel = true; // stop the auto closing on click
}
}
public static void DropdownClosed(object sender, EventArgs e)
{
ToolStripDropDownItem ddItem = (ToolStripDropDownItem)sender;
ToolStripDropDown parent = ddItem.GetCurrentParent() as ToolStripDropDown;
if (parent != null)
{
Point pos = parent.PointToClient(Cursor.Position);
if (pos.X < 0 || pos.Y < 0 || pos.X > parent.Width || pos.Y > parent.Height)
{
//When closing a dropdown, if the mouse isn't inside its parent, close all the parent, too.
parent.Close();
}
}
_openedDropdowns.Remove(ddItem.DropDown);
}
public bool PreFilterMessage(ref Message msg)
{
if (ToolStripDropDown.Visible)
{
switch (msg.Msg)
{
case WinApi.WM_LBUTTONDOWN:
case WinApi.WM_RBUTTONDOWN:
case WinApi.WM_MBUTTONDOWN:
case WinApi.WM_NCLBUTTONDOWN:
case WinApi.WM_NCRBUTTONDOWN:
case WinApi.WM_NCMBUTTONDOWN:
{
int i = unchecked ((int)(long)msg.LParam);
short x = (short)(i & 0xFFFF);
short y = (short)((i >> 16) & 0xFFFF);
Point pt = new Point(x, y);
WinApi.MapWindowPoints(msg.HWnd, ToolStripDropDown.Handle, ref pt, 1);
if (!ToolStripDropDown.ClientRectangle.Contains(pt))
{
if (!ToolStripDropDown.ClientRectangle.Contains(ToolStripDropDown.PointToClient(new Point(x, y))))
{
pt = new Point(x, y);
WinApi.MapWindowPoints(msg.HWnd, Handle, ref pt, 1);
if (!ClientRectangle.Contains(pt))
{
HideToolStrip();
}
}
}
break;
}
}
}
return(false);
}
