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); } }