mcs/class/Managed.Windows.Forms/System.Windows.Forms.X11Internal/X11Exception.cs

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   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2006 Novell, Inc. (http://www.novell.com)
  21 //
  22 //
  23
  24 using System;
  25 using System.Text;
  26 using System.Threading;
  27 using System.Windows.Forms;
  28
  29 namespace System.Windows.Forms.X11Internal {
  30
  31         internal class X11Exception : ApplicationException {
  32                 IntPtr          Display;
  33                 IntPtr          ResourceID;
  34                 IntPtr          Serial;
  35                 XRequest        RequestCode;
  36                 byte            ErrorCode;
  37                 byte            MinorCode;
  38
  39                 public X11Exception (IntPtr Display, IntPtr ResourceID, IntPtr Serial, byte ErrorCode, XRequest RequestCode, byte MinorCode)
  40                 {
  41                         this.Display = Display;
  42                         this.ResourceID = ResourceID;
  43                         this.Serial = Serial;
  44                         this.RequestCode = RequestCode;
  45                         this.ErrorCode = ErrorCode;
  46                         this.MinorCode = MinorCode;
  47                 }
  48
  49                 public override string Message {
  50                         get {
  51                                 return GetMessage (Display, ResourceID, Serial, ErrorCode, RequestCode, MinorCode);
  52                         }
  53                 }
  54
  55                 public static string GetMessage (IntPtr Display, IntPtr ResourceID, IntPtr Serial, byte ErrorCode, XRequest RequestCode, byte MinorCode)
  56                 {
  57                         StringBuilder   sb;
  58                         string          x_error_text;
  59                         string          error;
  60                         string          hwnd_text;
  61                         string          control_text;
  62                         Hwnd            hwnd;
  63                         Control         c;
  64
  65                         sb = new StringBuilder(160);
  66                         Xlib.XGetErrorText (Display, ErrorCode, sb, sb.Capacity);
  67                         x_error_text = sb.ToString();
  68                         hwnd = Hwnd.ObjectFromHandle(ResourceID);
  69                         if (hwnd != null) {
  70                                 hwnd_text = hwnd.ToString();
  71                                 c = Control.FromHandle(hwnd.Handle);
  72                                 if (c != null) {
  73                                         control_text = c.ToString();
  74                                 } else {
  75                                         control_text = String.Format("<handle {0:X} non-existant>", hwnd.Handle);
  76                                 }
  77                         }
  78                         else {
  79                                 hwnd_text = "<null>";
  80                                 control_text = "<null>";
  81                         }
  82
  83                         error = String.Format("\n  Error: {0}\n  Request:     {1:D} ({2})\n  Resource ID: 0x{3:X}\n  Serial:      {4}\n  Hwnd:        {5}\n  Control:     {6}", x_error_text, RequestCode, RequestCode, ResourceID.ToInt32(), Serial, hwnd_text, control_text);
  84                         return error;
  85                 }
  86         }
  87 }