Support Board
Date/Time: Thu, 12 Jun 2025 08:04:43 +0000
[Programming Help] - Unable to reset line after sc.DeleteUserDrawnACSDrawing using s_UseTool Tool
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| [2022-11-08 14:47:39] |
| User92573 - Posts: 563 |
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Dear Support I'd be very grateful for some assistance with the following. I have for example 2 ACS Button Events that run as follows: Button_1 Populates a Persistent Variable "Price_Level_1" that is used to draw a simple Horizontal Line. if(Price_Level_1 != 0) { s_UseTool Tool; Tool.ChartNumber = sc.ChartNumber; Tool.DrawingType = DRAWING_HORIZONTALLINE; Tool.AddMethod = UTAM_ADD_OR_ADJUST; Tool.AddAsUserDrawnDrawing = 1; Tool.AllowSaveToChartbook = 1; if r_LineNumber_Test_RefLine;!= 0) Tool.LineNumber = r_LineNumber_Test_RefLine; Tool.BeginValue = Price_Level_1; Tool.Color = RGB(0, 0, 0); Tool.LineWidth = 1; // LineWidth must be 1 to use non-solid line styles Tool.LineStyle = LINESTYLE_DOT; Tool.Text = "Test."; Tool.ShowPrice = 1; Tool.RoundToTickSize = 1; Tool.TextAlignment = DT_VCENTER | DT_RIGHT; Tool.TransparentLabelBackground = 1; sc.UseTool(Tool); r_LineNumber_Test_RefLine = Tool.LineNumber; //Remember line number which has been automatically set } This correctly places the anticipated line on the chart at "Price_Level_1". Testing the PersVars I can see that they hold the following example values: Price_Level_1 = "Correct price value" r_LineNumber_Test_RefLine = "-56789" Button_2 uses the following function to delete the line: sc.DeleteUserDrawnACSDrawing(sc.ChartNumber, r_LineNumber_Test_RefLine); As expected, this removed line while the PersVars were retained: ------------------------------------------------------- So, here is my issue ------------------------------------------------------- Select Button_1 again. Here I want to return/recover the Horizontal line to the chart using the same "Price_Level_1". Price_Level_1 = "Correct price value" r_LineNumber_Test_RefLine = "-56789" which is the same number as was set earlier. if(Price_Level_1 != 0) { s_UseTool Tool; Tool.ChartNumber = sc.ChartNumber; Tool.DrawingType = DRAWING_HORIZONTALLINE; Tool.AddMethod = UTAM_ADD_OR_ADJUST; Tool.AddAsUserDrawnDrawing = 1; Tool.AllowSaveToChartbook = 1; if r_LineNumber_Test_RefLine;!= 0) Tool.LineNumber = r_LineNumber_Test_RefLine; Tool.BeginValue = Price_Level_1; Tool.Color = RGB(0, 0, 0); Tool.LineWidth = 1; // LineWidth must be 1 to use non-solid line styles Tool.LineStyle = LINESTYLE_DOT; Tool.Text = "Test."; Tool.ShowPrice = 1; Tool.RoundToTickSize = 1; Tool.TextAlignment = DT_VCENTER | DT_RIGHT; Tool.TransparentLabelBackground = 1; sc.UseTool(Tool); r_LineNumber_Test_RefLine = Tool.LineNumber; //Remember line number which has been automatically set } ... But no line is drawn? Have I missed something as can't see I need increment the LineNumber and I've read through the relevant information? Many thanks. |
| [2022-11-09 09:08:59] |
| User92573 - Posts: 563 |
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Partially solved.
I have the line repainting but it doesn't always get deleted? So, still not acting as expected and I'm a little confused. Here is the tool "Horizontal Line" clear function. if (sc.MenuEventID == Button_2) { if (sc.PointerEventType == SC_ACS_BUTTON_ON) { s_UseTool ChartDrawing; // begin accepting mouse events sc.SetCustomStudyControlBarButtonEnable(Button_2, 1); sc.GetUserDrawnDrawingByLineNumber(0, r_LineNumber_Test_RefLine, ChartDrawing); sc.DeleteUserDrawnACSDrawing(sc.ChartNumber, r_LineNumber_Test_RefLine); r_LineNumber_Test_RefLine= 0; // I'm now resetting the PersVar but I don't see why? sc.SetCustomStudyControlBarButtonEnable(Button_19, 0); } else if (sc.PointerEventType == SC_ACS_BUTTON_OFF) { sc.SetCustomStudyControlBarButtonEnable(Button_2, 0); } } If I reset the line number to 0, so that Sierra generates a new unique number when Button_1 is used to draw a new line again using the same price value: Tool.BeginValue = Price_Level_1
Then I felt all should work as intended but that's not the case? Do I even need to reset the “r_LineNumber_Test_RefLine= 0; ” because I can't see why it would be necessary as either the new or old exist in the PersVar. Obviously getting a little confused. Certainly, allowing Sierra to generate another unique number solves it 'sometimes' but it's inconsistent? Any help appreciated. Date Time Of Last Edit: 2022-11-09 10:36:28
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