internal void UpdateGroupNative(ListViewGroupEx group, bool invalidate = true)
{
LVGROUP nGroup = group.AsLVGROUP();
nGroup.SetState(ListViewGroupState.Collapsible, collapsible);
this.CallWhenHandleValid(c => { SendMessage(ListViewMessage.SetGroupInfo, group.ID, nGroup); if (invalidate)
{
base.Invalidate();
}
});
}
private void InsertGroupNative(int index, ListViewGroupEx group)
{
this.CallWhenHandleValid(c => this.SendMessage(ListViewMessage.InsertGroup, index, group.AsLVGROUP()));
}