Using 3rd winform control get an exception my window closed

HI guys,

Sorry about my poor English , past few days I trying build a 3rd windows form control (Krypton ) and call it from my new unity project ,but some exception make my window close (Dispose) . now I got the stacktrace information by using StackTrace() , shown in the following figure:


then I checked mono assembly source and location that problem position, but I am not
experienced enough to fix it, so ask someone can find problems and give me some advice,thank you.

More code plz see "...mono-master\mcs\class\System.Windows.Forms\System.Windows.Forms\NativeWindow.cs"


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Code (CSharp):

1.         internal static IntPtr WndProc(IntPtr hWnd, Msg msg, IntPtr wParam, IntPtr lParam)
2.         {
3.             IntPtr result = IntPtr.Zero;
4.             Message    m = new Message();
5.             m.HWnd = hWnd;
6.             m.Msg = (int)msg;
7.             m.WParam = wParam;
8.             m.LParam = lParam;
9.             m.Result = IntPtr.Zero;
10.                    
11. #if debug
12.             Console.WriteLine("NativeWindow.cs ({0}, {1}, {2}, {3}): result {4}", hWnd, msg, wParam, lParam, m.Result);
13. #endif
14.             NativeWindow window = null;
15.            
16.             try {
17.             object current = null;
18.             lock (window_collection) {
19.                 current = window_collection[hWnd];
20.             }
21.  
22.             window = current as NativeWindow;
23.             if (current == null)
24.                 window = EnsureCreated (window, hWnd);
25.  
26.             if (window != null) {
27.                 window.WndProc (ref m);
28.                 result = m.Result;
29.             } else if (current is ArrayList) {
30.                 ArrayList windows = (ArrayList) current;
31.                 lock (windows) {
32.                     if (windows.Count > 0) {
33.                         window = EnsureCreated ((NativeWindow)windows[0], hWnd);
34.                         window.WndProc (ref m);
35.                         // the first one is the control's one. all others are synthetic,
36.                         // so we want only the result from the control
37.                         result = m.Result;
38.                         for (int i=1; i < windows.Count; i++)
39.                             ((NativeWindow)windows[i]).WndProc (ref m);
40.                     }
41.                 }
42.             } else {
43.                 result = XplatUI.DefWndProc (ref m);
44.             }
45.             }
46.             catch (Exception ex) {
47. #if !ExternalExceptionHandler
48.                 if (window != null) {
49.                     if (msg == Msg.WM_PAINT && window is Control.ControlNativeWindow) {
50.                         // Replace control with a red cross
51.                         var control = ((Control.ControlNativeWindow)window).Owner;
52.                         control.Hide ();
53.                         var redCross = new Control (control.Parent, string.Empty);
54.                         redCross.BackColor = Color.White;
55.                         redCross.ForeColor = Color.Red;
56.                         redCross.Bounds = control.Bounds;
57.                         redCross.Paint += HandleRedCrossPaint;
58.                     }
59.                      window.OnThreadException (ex);
60.                 }
61. #else
62.                 throw;
63. #endif
64.             }
65.             #if debug
66.                 Console.WriteLine("NativeWindow.cs: Message {0}, result {1}", msg, m.Result);
67.             #endif
68.  
69.             return result;
70.         }

​

 

Well, this is wrong callstack. The Dispose was called from wndproc because of exception happend before. And you may catch it in yout thread main func. I bet the exception is about you can't control window from aside thread.

 

Thank you reply so quickly, I test this in an unity-UI-button-object's onClick.AddListenner delegate, when I click unity button create new thread to call KryptonExplorer.dll make new window. I can't get any exception info even if I use try..catch, I try to make a break point at "KryptonExplorer.Form1 F3 = new KryptonExplorer.Form1();" code , but the debuger can't jump to next line (ps: VS 2015 with vs tools for unity) .

finally the thread I made dead there. if I don't make new thread then unity project dead too.here is my code:

Code (CSharp):

1. public class script : MonoBehaviour
2. {
3. void Start()
4. {
5. this.GetComponent<Button>().onClick.AddListener(delegate ()
6. {
7. Thread t = new Thread(() =>
8. {
9. KryptonExplorer.Form1 F3 = new KryptonExplorer.Form1();
10. F3.Show();
11. });
12. t.Start();
13. });
14. }

 

Exception happes in your anonymous method. Add try..catch to it to see real error.

 

I create a message box after Form1 InitializeComponent() , and it's ok at this point . but when I click message box ok button the problem occur again.

Code (CSharp):

1. namespace KryptonExplorer
2. {
3.     public partial class Form1 : KryptonForm
4.     {
5.         public Form1()
6.         {
7.             InitializeComponent();
8.  
9.             kryptonNavigator.SelectedIndex = 0;
10.             kryptonNavigatorToolkit.SelectedIndex = 0;
11.             System.Windows.Forms.MessageBox.Show("5" + this.ToString());
12.             //Dir = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
13.         }
14. ...
15.  
16. }
17.  

Just now I build a new WindowsFormsApplication , test the same code and I success call form1 by unity.
Sorry for my poor knowledge and I don't know what's the problem when I use 3rd winform control .

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