private void setSelectedIndex(int value)
{
SelectedIndexChanging?.Invoke(this, _selectedIndex);
_selectedIndex = value;
Invalidate();
SelectedIndexChanged?.Invoke(this, value);
}
protected override void WndProc(ref Message m)
{
if (m.Msg == (WM_REFLECT + WM_NOTIFY))
{
NMHDR hdr = (NMHDR)(Marshal.PtrToStructure(m.LParam, typeof(NMHDR)));
if (hdr.code == TCN_SELCHANGING)
{
TabPage tp = TestTab(PointToClient(Cursor.Position));
if (tp != null)
{
TabPageChangeEventArgs e = new TabPageChangeEventArgs(base.SelectedTab, tp);
SelectedIndexChanging?.Invoke(this, e);
if (e.Cancel || tp.Enabled == false)
{
m.Result = new IntPtr(1);
return;
}
}
}
}
base.WndProc(ref m);
}