private void Cmd_Prepare_Icons()
{
if (LocalData.Tree_Icon_Line is null)
{
LocalData.Tree_Icon_Line = LocalTreeFunctions.Cmd_Create_Icon_Line();
LocalData.Tree_Icon_Item = LocalTreeFunctions.Cmd_Create_Icon_Item();
LocalData.Tree_Icon_LastItem = LocalTreeFunctions.Cmd_Create_Icon_LastItem();
LocalData.Tree_Icon_Minus = LocalTreeFunctions.Cmd_Create_Icon_Minus_Or_Plus(true);
LocalData.Tree_Icon_Minus_Top = LocalTreeFunctions.Cmd_Create_Icon_Minus_Or_Plus_Top(true);
LocalData.Tree_Icon_Minus_Bottom = LocalTreeFunctions.Cmd_Create_Icon_Minus_Or_Plus_Bottom(true);
LocalData.Tree_Icon_Minus_Top_Bottom = LocalTreeFunctions.Cmd_Create_Icon_Minus_Or_Plus_Top_Bottom(true);
LocalData.Tree_Icon_Plus = LocalTreeFunctions.Cmd_Create_Icon_Minus_Or_Plus(false);
LocalData.Tree_Icon_Plus_Top = LocalTreeFunctions.Cmd_Create_Icon_Minus_Or_Plus_Top(false);
LocalData.Tree_Icon_Plus_Bottom = LocalTreeFunctions.Cmd_Create_Icon_Minus_Or_Plus_Bottom(false);
LocalData.Tree_Icon_Plus_Top_Bottom = LocalTreeFunctions.Cmd_Create_Icon_Minus_Or_Plus_Top_Bottom(false);
}
}