[WPF] Input method switching between Chinese causes the program to crash randomly.

涛黄 0

应用程序: Win178.exe
Framework 版本: v4.0.30319
说明: 应用程序通过 System.Environment.FailFast(string message) 请求终止进程。
消息: 不可恢复的系统错误。
堆栈:
   在 System.Environment.FailFast(System.String)
   在 System.Windows.Documents.TextStore.OnEndComposition(ITfCompositionView)
   在 MS.Win32.UnsafeNativeMethods+ITextStoreACPSink.OnLockGranted(LockFlags)
   在 MS.Win32.UnsafeNativeMethods+ITextStoreACPSink.OnLockGranted(LockFlags)
   在 System.Windows.Documents.TextStore.GrantLock()
   在 System.Windows.Documents.TextStore.GrantLockWorker(LockFlags)
   在 System.Windows.Documents.TextStore.RequestLock(LockFlags, Int32 ByRef)
   在 MS.Win32.UnsafeNativeMethods+ITfMessagePump.GetMessageW(System.Windows.Interop.MSG ByRef, IntPtr, Int32, Int32, Int32 ByRef)
   在 MS.Win32.UnsafeNativeMethods+ITfMessagePump.GetMessageW(System.Windows.Interop.MSG ByRef, IntPtr, Int32, Int32, Int32 ByRef)
   在 System.Windows.Threading.Dispatcher.GetMessage(System.Windows.Interop.MSG ByRef, IntPtr, Int32, Int32)
   在 System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame)
   在 System.Windows.Application.RunDispatcher(System.Object)
   在 System.Windows.Application.RunInternal(System.Windows.Window)
   在 Win178.App.Main()

Hui Liu-MSFT 48,576 Reputation points Microsoft Vendor

2023-11-22T07:35:06.52+00:00

Hi,@涛黄. Welcome to Microsoft Q&A Forum.

The error message you provided indicates that the application has encountered an unrecoverable system error and is requesting to terminate the process using System.Environment.FailFast(string message).

The specific error seems to be related to the TextStore.OnEndComposition method in the System.Windows.Documents namespace, which is used for handling text composition in WPF applications.

Here are a few suggestions to investigate and resolve the issue:

Error Message Analysis:

Examine the error message provided in the FailFast call. It might contain details about what caused the application to terminate.

Check if there are any other logs or error messages leading up to this termination request.

Unhandled Exceptions:

Check your application's code for unhandled exceptions. Unhandled exceptions can lead to unexpected termination.

Implement proper exception handling to catch and log exceptions before they cause the application to fail fast.

TextStore and Composition:

The stack trace mentions System.Windows.Documents.TextStore and composition. Review the parts of your application that deal with text input, document handling, or composition.

Ensure that you handle text-related operations safely and don't cause unrecoverable errors.

Check for External Dependencies:

Verify if there are any third-party libraries or components in your application that might be causing the issue.

If you still have questions, please feel free to let me know. The problem will be better solved if more details are described (error messages, steps and code to reproduce the problem).

涛黄 0

This is TextChanged Event Code:

private void richBox_TextChanged(object sender, TextChangedEventArgs e)
{
    try
    {
        TextRange textRange = new TextRange(richBox.Document.ContentStart, richBox.Document.ContentEnd);
        var text = textRange.Text.Trim();
        if (text.Length > MaxLength)
        {
            int gap = 0;
            while (richBox.CaretPosition.DeleteTextInRun(-1) == 0)
            {
                richBox.CaretPosition = richBox.CaretPosition.GetPositionAtOffset(--gap);
            }

        }
        RecognizeAt(text, e);
    }
    catch (Exception ex)
    {
        LogHelper.Error(ex.StackTrace);
    }
}

Hui Liu-MSFT 48,576 Reputation points Microsoft Vendor

2023-11-22T09:03:07.6066667+00:00

Hi,@涛黄. Could you show me the code for MaxLength property and RecognizeAt method? Regarding the code LogHelper, is it custom code or which Nuget package is used?

涛黄 0

MaxLength is a const.
LogHelper is a log4net helper class.
RecognizeAt method is used to recognize the "@" character in input.

const int MaxLength = 1500;

[System.Runtime.ExceptionServices.HandleProcessCorruptedStateExceptions]
[SecurityCritical]
void RecognizeAt(string text, TextChangedEventArgs e)
{
    try
    {
        if (string.IsNullOrEmpty(text))
        {
            this.CloseAtPopup();
            return;
        }

        if (!_isRecognizeAt) return;

        if (_isAtSomeoneFromChatBox) return;

        if (text.Contains("@"))
        {
            TextPointer tpCaret = this.richBox.CaretPosition;
            string tpBackwardText = tpCaret.GetTextInRun(LogicalDirection.Backward);

            if (this.ppMember.IsUpdateWindow)
            {
                this.ppMember.IsUpdateWindow = false;

                tpCaret.DeleteTextInRun(-1);
                e.Handled = true;
                return;
            }

            int offset = tpCaret.GetOffsetToPosition(this.richBox.Document.ContentStart);
            if (!this._isPaste && offset == -2)
            {
                this.CloseAtPopup();
                return;
            }

            this.CalculatePopupLocation(tpCaret);

            this.GetAtList();
            if (!_isRecognizeAt) return;

            string key;
            if (this._isPaste)
            {
                key = Clipboard.GetText().Split('@').Last();
                this._isPaste = false;
            }
            else
                key = tpBackwardText.Split('@').Last();

            if (string.IsNullOrEmpty(key))
            {
                this.listMember.ItemsSource = this._groupMember.OrderBy(x => x.DisplayName, new OrdinalComparer()).OrderBy(x => KeySelecter(x));
                this.OpenAtPopup(0);
            }
            else
            {
                if (this._groupMember.Any(x => x.DisplayName.ToLower().Contains(key.ToLower())))
                {
                    this.listMember.ItemsSource = this._groupMember.Where(x => x.DisplayName.ToLower().Contains(key.ToLower())).OrderBy(x => x.DisplayName, new OrdinalComparer()).OrderBy(x => KeySelecter(x));
                    this.OpenAtPopup(key.Length);
                }
                else
                    this.CloseAtPopup();
            }
        }
        else
            this.CloseAtPopup();
    }
    catch (AccessViolationException ex) //捕获cse类型的异常
    {
        LogHelper.Error($"RecognizeAt CSE:{ex.StackTrace}");
    }
    catch (SEHException ex)
    {
        LogHelper.Error($"RecognizeAt SEH:{ex.StackTrace}");
    }
    catch (COMException ex)
    {
        LogHelper.Error($"RecognizeAt COM:{ex.StackTrace}");
    }
    catch (Exception ex)
    {
        LogHelper.Error($"RecognizeAt EX:{ex.StackTrace}");
    }
}

[assembly: XmlConfigurator(ConfigFile = "log4net.config", ConfigFileExtension = "config", Watch = true)] namespace Win178.Common.Helper 
{     
    public class LogHelper     
    {         
        private static readonly ILog _sysLog = LogManager.GetLogger("SystemLogger");

Hui Liu-MSFT 48,576 Reputation points Microsoft Vendor

2023-11-23T05:22:15.5433333+00:00

Hi,@涛黄. I still can't reproduce your problem. Is there any complete minimal example code and steps to reproduce the issue?

Here are a few suggestions to troubleshoot and address the issue:

1.Ensure that your WPF application handles input method events appropriately, especially when dealing with rich text boxes or other controls that involve text input. Avoid Direct Manipulation of CaretPosition.

Manipulating the CaretPosition directly might be risky, especially in situations involving input method switching. Consider alternative approaches to handle text and caret position.

2.Ensure that your code related to text handling is thread-safe. WPF controls, including text boxes, are meant to be accessed from the UI thread. Use proper synchronization mechanisms if needed.

3.The code mentions the use of the Clipboard. Make sure that the clipboard operations are handled properly, and interactions with it do not lead to unexpected behaviors.

4.Replicate the issue with different input methods (languages) to see if the problem is specific to a certain language or input method.
HOHO HOHO 0 Reputation points

2024-11-08T12:39:25.2566667+00:00

https://github.com/dotnet/wpf/issues/4984

Similar to this issue, but it has not been resolved

1 answer

HOHO HOHO 0 Reputation points

2024-11-08T12:41:24.61+00:00

This version still has issues, very frequently
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