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[Closed] System.Windows.Forms.Timer Unhandled Exception and escapeEnable = true

Hi, everyone!
Simplest example from the mxs reference:

	t = dotNetObject "System.Windows.Forms.Timer"
	fn OnTick sender ev =
	(		
		try
		(	-- some little task in max main thread
			print localTime		
		)
		catch()	
	)
	dotnet.addEventHandler t "tick" OnTick
	t.interval = 1000
	t.start()

	escapeEnable = true
-- 	t.stop()

Now when the timer is active and escapeEnable set to true press and hold Esc key for some time. Max will popup unhandled exception window which is impossible to close. So the user has no chance to save the work.
Can someone suggest a working solution to prevent such behavior, except disabling escapeEnable?

I thought that it is possible to add some timestamp checks to stop timer from execution further, but this doesn’t seem to work.

	t = dotNetObject "System.Windows.Forms.Timer"
	fn OnTick sender ev =
	(
		local ts = timeStamp()
		
		if ts - sender.Tag >= (sender.Interval * 1.5) then
		(
			format "Interval exceeded: %" ((ts - sender.Tag) / sender.Interval)
			sender.Stop()
		)
		else sender.Tag = ts		 
		
		try
		(       -- some little task in max main thread
			print localTime		
		)
		catch()	
	)
	dotnet.addEventHandler t "tick" OnTick
	t.interval = 1000
	
	t.tag = timestamp()
	t.start()

	escapeEnable = true
-- 	t.stop()

cXOLWdYc1f

14 Replies

I don’t have this exception (MAX 2016)

but it might happen I guess.

make some tests:

#1 try to remove “try/catch”
#2 try to move all in local scope:

(
	global t = dotNetObject "System.Windows.Forms.Timer"
	fn OnTick sender ev =
	(		
		try
		(	-- some little task in max main thread
			print localTime		
		)
		catch()	
	)
	dotnet.addEventHandler t "tick" OnTick
	t.interval = 1000
	t.start()
)

#3 maybe you have another “background” task that is causing the problem?

2012, 2014, 2016, 2017 & 2020 behave exactly the same. Impossible to close this popup.
Could it be that your 2016 somehow forces escapeEnable to false? As it is the only condition when this script can work safely.

  1. Try catch isn’t a problem. Removing it doesn’t change a thing.
  2. Initially this timer is a member of a struct, so it is local and its callback is also local.
  3. I removed ENU folder, renamed Plugins folder in max root, so there’s nothing left that may interfere with this basic example script. And it still fails… Other users also had this issue, so it is unlikely to be related to my pretty old pc config.

At first I thought that something like this might work. But I was overly optimistic.

fn OnTick =
(
    escapeEnable = false
    ...
    ...
    escapeEnable = true
)

So the only solution available at the moment is to force escapeEnable to false and pray for it to stay disabled while timer is active.

can you show whole error message with Details?

See the end of this message for details on invoking 
just-in-time (JIT) debugging instead of this dialog box.

*********** Exception Text ***********
System.Runtime.InteropServices.SEHException (0x80004005): External component has thrown an exception.
   at MXS_dotNet.DotNetObjectWrapper.RunEventHandlers(DotNetObjectWrapper* , Value* target, Value* eventName, Array* handlers, Object[] delegateArgsArray)
   at MXS_dotNet.DotNetObjectWrapper.ProcessEvent(DotNetObjectWrapper* , String eventName, Object delegateArgs)
   at MXS_dotNet.DotNetObjectManaged.delegate_proxy_type.ProcessEvent(String eventName, Object delegateArgs)
   at System.Windows.Forms.Timer.OnTick(EventArgs e)
   at System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)


*********** Loaded Assemblies ********
mscorlib
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.4069.0 built by: NET48REL1LAST_B
    CodeBase: file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/mscorlib.dll
----------------------------------------
3dsmax
    Assembly Version: 0.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/3dsmax.exe
----------------------------------------
AssemblyLoader
    Assembly Version: 16.5.277.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/AssemblyLoader.DLL
----------------------------------------
CSharpUtilities
    Assembly Version: 16.5.277.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/CSharpUtilities.DLL
----------------------------------------
ManagedServices
    Assembly Version: 0.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/ManagedServices.DLL
----------------------------------------
UiViewModels
    Assembly Version: 16.5.277.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/UiViewModels.DLL
----------------------------------------
PresentationFramework
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.4110.0
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/PresentationFramework/v4.0_4.0.0.0__31bf3856ad364e35/PresentationFramework.dll
----------------------------------------
WindowsBase
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.4110.0 built by: NET48REL1LAST_B
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/WindowsBase/v4.0_4.0.0.0__31bf3856ad364e35/WindowsBase.dll
----------------------------------------
System.Core
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.4110.0 built by: NET48REL1LAST_B
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll
----------------------------------------
System
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.4001.0 built by: NET48REL1LAST_C
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
PresentationCore
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.4110.0 built by: NET48REL1LAST_B
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_64/PresentationCore/v4.0_4.0.0.0__31bf3856ad364e35/PresentationCore.dll
----------------------------------------
System.Xaml
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.4110.0 built by: NET48REL1LAST_B
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Xaml/v4.0_4.0.0.0__b77a5c561934e089/System.Xaml.dll
----------------------------------------
Autodesk.Max.Wrappers
    Assembly Version: 0.0.0.0
    Win32 Version: 16.3.0.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/Autodesk.Max.Wrappers.dll
----------------------------------------
3dsCUIActionTest
    Assembly Version: 1.0.0.0
    Win32 Version: 1.0.0.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/3dsCUIActionTest.dll
----------------------------------------
3dsmax_custom_Snap
    Assembly Version: 1.0.0.0
    Win32 Version: 1.0.0.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/3dsmax_custom_Snap.dll
----------------------------------------
Autodesk.Max.StateSets
    Assembly Version: 16.5.277.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/Autodesk.Max.StateSets.dll
----------------------------------------
DaylightSimulation
    Assembly Version: 0.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/DaylightSimulation.dll
----------------------------------------
FPMaxWpfContent
    Assembly Version: 0.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/FPMaxWpfContent.dll
----------------------------------------
ManagedBootstrap
    Assembly Version: 0.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/ManagedBootstrap.dll
----------------------------------------
ManagedNetworkUtilities
    Assembly Version: 1.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/ManagedNetworkUtilities.dll
----------------------------------------
MaterialExplorerView
    Assembly Version: 0.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/MaterialExplorerView.dll
----------------------------------------
MaxWpfContent
    Assembly Version: 16.5.277.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/MaxWpfContent.dll
----------------------------------------
nunit.framework
    Assembly Version: 2.4.7.0
    Win32 Version: 2.4.7.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/nunit.framework.dll
----------------------------------------
SceneExplorerView
    Assembly Version: 1.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/SceneExplorerView.dll
----------------------------------------
Sunlight
    Assembly Version: 1.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/Sunlight.dll
----------------------------------------
Autodesk.Max
    Assembly Version: 16.3.0.0
    Win32 Version: 16.3.0.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/Autodesk.Max.DLL
----------------------------------------
System.Drawing
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.3761.0 built by: NET48REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Windows.Forms
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.4042.0 built by: NET48REL1LAST_C
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System.Configuration
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.3761.0 built by: NET48REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Xml
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.3761.0 built by: NET48REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
Microsoft.GeneratedCode
    Assembly Version: 1.0.0.0
    Win32 Version: 4.8.3761.0 built by: NET48REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
Microsoft.GeneratedCode
    Assembly Version: 1.0.0.0
    Win32 Version: 4.8.3761.0 built by: NET48REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
Microsoft.JScript
    Assembly Version: 10.0.0.0
    Win32 Version: 14.8.3761.0 built by: NET48REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.JScript/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.JScript.dll
----------------------------------------
inpjfwqi
    Assembly Version: 0.0.0.0
    Win32 Version: 14.8.3761.0 built by: NET48REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.JScript/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.JScript.dll
----------------------------------------
inpjfwqi
    Assembly Version: 0.0.0.0
    Win32 Version: 14.8.3761.0 built by: NET48REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.JScript/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.JScript.dll
----------------------------------------
SceneExplorer
    Assembly Version: 0.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/SceneExplorer.DLL
----------------------------------------
ExplorerFramework
    Assembly Version: 16.5.277.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/ExplorerFramework.DLL
----------------------------------------
WPFCustomControls
    Assembly Version: 16.5.277.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/WPFCustomControls.DLL
----------------------------------------
DevExpress.XtraTreeList.v10.1
    Assembly Version: 10.1.7.0
    Win32 Version: 10.1.7.10307
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/DevExpress.XtraTreeList.v10.1.DLL
----------------------------------------
AdWindows
    Assembly Version: 4.0.24.0
    Win32 Version: 4.0.24.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/AdWindows.DLL
----------------------------------------
ExplorerManagement
    Assembly Version: 0.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/ExplorerManagement.DLL
----------------------------------------
MaxCustomControls
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    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/MaxCustomControls.DLL
----------------------------------------
DevExpress.XtraEditors.v10.1
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----------------------------------------
DevExpress.Utils.v10.1
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    Win32 Version: 10.1.7.10307
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/DevExpress.Utils.v10.1.DLL
----------------------------------------
MaxMaterialBindings
    Assembly Version: 0.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/MaxMaterialBindings.DLL
----------------------------------------
DevExpress.Data.v10.1
    Assembly Version: 10.1.7.0
    Win32 Version: 10.1.7.10307
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/DevExpress.Data.v10.1.DLL
----------------------------------------
MaxExplorerBindings
    Assembly Version: 0.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/MaxExplorerBindings.DLL
----------------------------------------
System.Data
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    Win32 Version: 4.8.3761.0 built by: NET48REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_64/System.Data/v4.0_4.0.0.0__b77a5c561934e089/System.Data.dll
----------------------------------------
MaxSerialization
    Assembly Version: 16.5.277.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/MaxSerialization.DLL
----------------------------------------
mxsdotNet
    Assembly Version: 1.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/mxsdotNet.dlx
----------------------------------------
CoreManagedUiControls
    Assembly Version: 16.5.277.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/CoreManagedUiControls.DLL
----------------------------------------
AdApplicationFrame
    Assembly Version: 0.0.0.0
    Win32 Version: 4.0.19.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/AdApplicationFrame.DLL
----------------------------------------
PresentationFramework.Classic
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.3761.0 built by: NET48REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/PresentationFramework.classic/v4.0_4.0.0.0__31bf3856ad364e35/PresentationFramework.classic.dll
----------------------------------------
PresentationFramework-SystemXml
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.3761.0
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/PresentationFramework-SystemXml/v4.0_4.0.0.0__b77a5c561934e089/PresentationFramework-SystemXml.dll
----------------------------------------
PresentationFramework.Aero
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.3761.0 built by: NET48REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/PresentationFramework.Aero/v4.0_4.0.0.0__31bf3856ad364e35/PresentationFramework.Aero.dll
----------------------------------------
PresentationFramework-SystemCore
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.3761.0
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/PresentationFramework-SystemCore/v4.0_4.0.0.0__b77a5c561934e089/PresentationFramework-SystemCore.dll
----------------------------------------
PresentationFramework-SystemData
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.4110.0
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/PresentationFramework-SystemData/v4.0_4.0.0.0__b77a5c561934e089/PresentationFramework-SystemData.dll
----------------------------------------
UIAutomationTypes
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.4110.0 built by: NET48REL1LAST_B
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/UIAutomationTypes/v4.0_4.0.0.0__31bf3856ad364e35/UIAutomationTypes.dll
----------------------------------------
UIAutomationProvider
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.4110.0 built by: NET48REL1LAST_B
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/UIAutomationProvider/v4.0_4.0.0.0__31bf3856ad364e35/UIAutomationProvider.dll
----------------------------------------
ATSVault10
    Assembly Version: 1.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/stdplugs/AssetTracking/ATSVault10.dll
----------------------------------------
System.Xml.Linq
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.3761.0 built by: NET48REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml.Linq/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.Linq.dll
----------------------------------------
xtbhqofq
    Assembly Version: 0.0.0.0
    Win32 Version: 4.8.4001.0 built by: NET48REL1LAST_C
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
jahtest
    Assembly Version: 1.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/mxsdotNet.dlx
----------------------------------------
DNDDependecies
    Assembly Version: 1.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/mxsdotNet.dlx
----------------------------------------
User32
    Assembly Version: 0.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/mxsdotNet.dlx
----------------------------------------
ResolutionChecker
    Assembly Version: 1.0.0.0
    Win32 Version: 16.5.277.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/bin/assemblies/mxsdotNet.dlx
----------------------------------------
Vault10WebServices
    Assembly Version: 15.3.0.0
    Win32 Version: 15.3.0.0
    CodeBase: file:///C:/Program%20Files/Autodesk/3ds%20Max%202014/Vault10WebServices.DLL
----------------------------------------
System.Web.Services
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.3761.0 built by: NET48REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Web.Services/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Web.Services.dll
----------------------------------------

******** JIT Debugging ***********
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.

For example:

<configuration>
    <system.windows.forms jitDebugging="true" />
</configuration>

When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.

Hmm… I see a few of my personal .dlx in /bin folder… but other users certainly don’t have these, but still have the exception.
upd. mxsdotNet.dlx is Autodesk dll.

that’s what confuses me …

OK. I have the same issue on another machine with MAX 2020

Here’s the diff after additional cleanings. Removed all my stuff from max root folder

this is from the MXS Help:

escapeEnable

In 3ds Max 9 and higher, the default value of this variableis false . It used to be true in versions prior to 3ds Max 9.

Personally I don’t use escapeEnable many years. So… turn it OFF and forget

PS:
many people mistakenly think that escapeEnable is something about interrupting Max scripts. In fact, this is an interception of the Escape Key, so as not to confuse another process which listen for an interuption – Progress Bar for example, which has its own Cancel. Before, when there was no .NET, WPF, Qt controls with their own built-in key events, it made some sense. But not now any more…

Either the default value isn’t really changed since then or there’s something that sets it to true even at fresh & clean startup.
%D0%B8%D0%B7%D0%BE%D0%B1%D1%80%D0%B0%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5

Anyway, thanks! I somehow missed this info reading the reference.
I already found that it is possible to replace winforms timer with empty auxiliary rollout with only timer control.
It doesn’t throw exception even when escapeEnable is enabled

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