UpdateScreen ...Proof of concept

Code Red > .NET

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kdub_nz:
Placeholder
Refer : https://forums.autodesk.com/t5/net/show-and-hide-layers-using-c-net/m-p/8818781#M62708
Video .MP4 Attached + Piccys

added kdub:
Source attached in Post Reply #4

kdub_nz:
The aim was to demonstrate that Editor.UpdateScreen() Worked in a manner required by the OP

Commands Code

--- Code - C#: ---// (C) Copyright 2019 by kdub//using System;using System.Collections.Generic;using System.Linq;using System.Text;using Autodesk.AutoCAD.ApplicationServices;using Autodesk.AutoCAD.Colors;using Autodesk.AutoCAD.DatabaseServices;using Autodesk.AutoCAD.EditorInput;using Autodesk.AutoCAD.Geometry;using Autodesk.AutoCAD.Runtime; using Exception = System.Exception;using cadApp = Autodesk.AutoCAD.ApplicationServices.Application; [assembly: ExtensionApplication(typeof(TestDialog0615.Initialization))][assembly: CommandClass(typeof(TestDialog0615.Commands))] namespace TestDialog0615{ public class Commands { [CommandMethod("TEST")] public void Test() { SetupForTest(); SetupDialog(); } private static void SetupDialog() { using (var dialog = new ModalDialog()) { var showResult = cadApp.ShowModalDialog(dialog); if (showResult == System.Windows.Forms.DialogResult.OK) { cadApp.ShowAlertDialog("All Good"); } } } private static void SetupForTest() { dynamic layerTable = Active.Database.LayerTableId; string layerName = "RedStuff"; if (!layerTable.Has(layerName)) { Active.Database.CreateLayer(layerName, Color.FromColorIndex(ColorMethod.ByAci, 1)); } layerName = "GreenStuff"; if (!layerTable.Has(layerName)) { Active.Database.CreateLayer(layerName, Color.FromColorIndex(ColorMethod.ByAci, 3)); } layerName = "BlueStuff"; if (!layerTable.Has(layerName)) { Active.Database.CreateLayer(layerName, Color.FromColorIndex(ColorMethod.ByAci, 5)); } CreateSomeCquircles(); } private static void CreateSomeCquircles() { Active.Database.UsingModelSpace( (tr, ms) => { var rnd = new Random(DateTime.Now.Second); string layerName; for (int i = 0; i < 60; i++) { var x = rnd.NextDouble() * 125; var y = rnd.NextDouble() * 100; var r = rnd.NextDouble() * 25; if (i > 40) layerName = "RedStuff"; else if (i > 20) layerName = "GreenStuff"; else layerName = "BlueStuff"; ms.Create<Circle>( tr, circle => { circle.Center = new Point3d(x, y, 0.0); circle.Radius = r; circle.Layer = layerName; }); } }); } } //===================================================== public class Initialization : IExtensionApplication { public void Initialize() { cadApp.Idle += OnIdle; } private void OnIdle(object sender, EventArgs e) { if (Active.Document != null) { cadApp.Idle -= OnIdle; Active.WriteMessage("\nTestDialog0615 loaded.\n"); Active.WriteMessage("Enter \"TEST\" at the CommandLine.\n"); } } public void Terminate() { } }}

Dialog Code

--- Code - C#: ---using System;using System.Windows.Forms;using Autodesk.AutoCAD.DatabaseServices;using cadApp = Autodesk.AutoCAD.ApplicationServices.Application; namespace TestDialog0615{ public partial class ModalDialog : Form { public ModalDialog() { InitializeComponent(); } private void ModalDialog_Load(object sender, EventArgs e) { } private void CbRed_CheckedChanged(object sender, EventArgs e) { if (cbRed.Checked) { TurnLayerOnOff("RedStuff", true); textBox.Text = "Red Checked"; Active.Editor.UpdateScreen(); } else { TurnLayerOnOff("RedStuff", false); textBox.Text = "Red Unchecked"; Active.Editor.UpdateScreen(); } } private void CbGreen_CheckedChanged(object sender, EventArgs e) { if (cbGreen.Checked) { TurnLayerOnOff("GreenStuff", true); textBox.Text = "Green Checked"; Active.Editor.UpdateScreen(); } else { TurnLayerOnOff("GreenStuff", false); textBox.Text = "Green Unchecked"; Active.Editor.UpdateScreen(); } } private void CbBlue_CheckedChanged(object sender, EventArgs e) { if (cbBlue.Checked) { TurnLayerOnOff("BlueStuff", true); textBox.Text = "Blue Checked"; Active.Editor.UpdateScreen(); } else { TurnLayerOnOff("BlueStuff", false); textBox.Text = "Blue Unchecked"; Active.Editor.UpdateScreen(); } } private void ButtonZoom_Click(object sender, EventArgs e) { //Call the COM library dynamic acadApp = cadApp.AcadApplication; acadApp.ZoomExtents(); acadApp.ZoomScaled(0.75, 1); } // should not be in the Dialog Stuff; move to control file :kdub // and change to use delegates private void TurnLayerOnOff( string layerName, bool isOffp) { using (var tr = Active.Database.TransactionManager.StartTransaction()) { var layerTable = tr.GetObject( Active.Database.LayerTableId, OpenMode.ForRead) as LayerTable; if (layerTable != null) { if (layerTable.Has(layerName)) { var layerTableRecord = tr.GetObject( layerTable[layerName], OpenMode.ForWrite) as LayerTableRecord; if (layerTableRecord != null) { layerTableRecord.IsOff = isOffp; } } } tr.Commit(); } } }}

gile:
Hi Kerry,

The code you provided uses static properties of an Active class and some Extension methods you do not show.
I think a 'proof of concept' should be testable by anyone 'as is' (but may be I'm wrong).

kdub_nz:

Hi Gilles

The main issue was the Editor.UpdateScreen() working when there was no user access to more than the dialog.
More than anything I wanted to confirm my understanding.

I'll package the Solution and post it.

Regards

kdub_nz:

Attached are the source files and solution .

I build with VS 2019 for ACAD 2020 on WIN 10 64bit
ObjectARX SDK is D:\ObjectARX 2020

Enjoy

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