topic Re: Cancel other command in .NET Forum

Cancel other command

dallas.a.adams — Tue, 20 Sep 2022 02:02:15 GMT

I am using a toolbar to display a number of grid sizes that I commonly switch between. I am using this function to loop though all viewports and change the gird size on all of them when the button is pressed on the toolbar.

void SetGrid(double size, short spacing) { // Get AutoCAD objects. Document doc = Application.DocumentManager.MdiActiveDocument; KernelDescriptor kd = new KernelDescriptor(); Database database = doc.Database; Autodesk.AutoCAD.EditorInput.Editor ed = doc.Editor; // Get the current CVPORT. int currentCVPORT = System.Convert.ToInt32(Application.GetSystemVariable("CVPORT")); // Get the other View Ports. List<int> viewPortNumbers = new List<int>(); using (Transaction transaction = database.TransactionManager.StartTransaction()) { SymbolTable symTable = (SymbolTable)transaction.GetObject(database.ViewportTableId, OpenMode.ForRead); foreach (ObjectId id in symTable) { ViewportTableRecord symbol = (ViewportTableRecord)transaction.GetObject(id, OpenMode.ForWrite); viewPortNumbers.Add(symbol.Number); symbol.GridEnabled = true; symbol.GridIncrements = new Autodesk.AutoCAD.Geometry.Point2d(size, size); symbol.GridMajor = spacing; symbol.SnapIncrements = new Autodesk.AutoCAD.Geometry.Point2d(size, size); } transaction.Commit(); doc.Editor.UpdateTiledViewportsFromDatabase(); } // Switch back to original view port. Application.SetSystemVariable("CVPORT", currentCVPORT); }

It seems to work except for if there is another command already in progress. I was wondering how I can cancel the previous command if there is one via .net?

Re: Cancel other command

_gile — Tue, 20 Sep 2022 06:53:26 GMT

Hi,

Assuming the SetGrid method is called from methods colored with the ComandMethod attribute, if the command macro of the button starts with: ^C^C, it should cancel the running command.

Command:

[CommandMethod("GRID15", CommandFlags.Modal)] public void SetGrid_1_5() { SetGrid(1.0, 5); }

Macro:

^C^CGRID15

Re: Cancel other command

dallas.a.adams — Tue, 20 Sep 2022 11:11:06 GMT

Yes, you assumed correctly about the functions, although I had to add the command flag to all of them. They look like this now:

/// <summary> /// Method to set the grid and snap to 0.01mm. /// </summary> [Autodesk.AutoCAD.Runtime.CommandMethod("SNAPUNIT_0_01", CommandFlags.Modal)] public void SnapUnit_0_01_Command() { SetGrid(0.01, 10); }

But I tried to add the C^C^ to macro in the AcadToolbar.AddToolbarButton function but AutoCAD replies with:

Unknown command "^C^CSNAPUNIT_10". Press F1 for help.

Here is the full Initialize function where I am adding the C^C^:

/// <summary> /// AutoCAD calls this method to initialize the extension. /// </summary> public void Initialize() { AcadApplication cadApp = (AcadApplication)Autodesk.AutoCAD.ApplicationServices.Application.AcadApplication; AcadToolbar tb = cadApp.MenuGroups.Item(0).Toolbars.Add("GridSnap"); tb.Dock(Autodesk.AutoCAD.Interop.Common.AcToolbarDockStatus.acToolbarDockLeft); button0_01mm = tb.AddToolbarButton(0, "0.01", "Sets the Snap/Grid 0.01mm", "^C^CSnapUnit_0_01\n", null); button0_05mm = tb.AddToolbarButton(1, "0.05", "Sets the Snap/Grid 0.05mm", "^C^CSnapUnit_0_05\n", null); button0_1mm = tb.AddToolbarButton(2, "0.1", "Sets the Snap/Grid 0.1mm", "^C^CSnapUnit_0_1\n", null); button0_5mm = tb.AddToolbarButton(3, "0.5", "Sets the Snap/Grid 0.5mm", "^C^CSnapUnit_0_5\n", null); button1mm = tb.AddToolbarButton(4, "1", "Sets the Snap/Grid 1mm", "^C^CSnapUnit_1\n", null); button5mm = tb.AddToolbarButton(5, "5", "Sets the Snap/Grid 5mm", "^C^CSnapUnit_5\n", null); button10mm = tb.AddToolbarButton(6, "10", "Sets the Snap/Grid 10mm", "^C^CSnapUnit_10\n", null); button50mm = tb.AddToolbarButton(7, "50", "Sets the Snap/Grid 50mm", "^C^CSnapUnit_50\n", null); button100mm = tb.AddToolbarButton(8, "100", "Sets the Snap/Grid 100mm", "^C^CSnapUnit_100\n", null); button500mm = tb.AddToolbarButton(9, "500", "Sets the Snap/Grid 500mm", "^C^CSnapUnit_500\n", null); button1000mm = tb.AddToolbarButton(10, "1000", "Sets the Snap/Grid 1000mm", "^C^CSnapUnit_1000\n", null); SetBitMaps(); }

Is this not the right place to add this?

Re: Cancel other command

_gile — Tue, 20 Sep 2022 11:42:54 GMT

My mistake.

From the example in the documentation about AddToolbarButton AcitveX method, the macro string should be:

"\u0003\u0003SNAPUNIT_0_01\n"

Re: Cancel other command

kerry_w_brown — Tue, 20 Sep 2022 23:14:45 GMT

Bookmarked !

Thanks Gilles

Re: Cancel other command

dallas.a.adams — Wed, 21 Sep 2022 01:21:32 GMT

Its working perfectly now. Thank you for your help, it is greatly appreciated. I am now inspired to try a few more functions now.

Re: Cancel other command

kerry_w_brown — Wed, 21 Sep 2022 03:38:16 GMT

Hi,

For curiosity . .

What was the purpose of this ??

KernelDescriptor kd = new KernelDescriptor();

. . . Something to do with hardware Acceleration ??

Regards,

Re: Cancel other command

dallas.a.adams — Wed, 21 Sep 2022 04:20:06 GMT

I'm not really sure. Two of those lines at the start of the function are not used at all. Sit down, this might shock you, but I don't know what I'm doing. If I was to hazard a guess it comes from a previous attempt at trying to find the viewport objects. If I remember correctly, you need it to get the Graphics Kernel object to then call other functions like CreateAutoCADDevice and CreateAutoCADModel which is where I was originally thinking I be able to find the Viewports.

But as you can see, I found them in the Viewport table in the database.