[Mono-bugs] [Bug 79517][Blo] New - Link Label crashes when setting Text property

[bugzilla-daemon at bugzilla.ximian.com]

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Changed by mrj001 at shaw.ca.

http://bugzilla.ximian.com/show_bug.cgi?id=79517

--- shadow/79517	2006-09-28 03:38:07.000000000 -0400
+++ shadow/79517.tmp.9547	2006-09-28 03:38:07.000000000 -0400
@@ -0,0 +1,87 @@
+Bug#: 79517
+Product: Mono: Class Libraries
+Version: 1.1
+OS: 
+OS Details: Slackware 10.2/Linux 2.6.15
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Blocker
+Component: Windows.Forms
+AssignedTo: toshok at ximian.com                            
+ReportedBy: mrj001 at shaw.ca               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: Link Label crashes when setting Text property
+
+Please fill in this template when reporting a bug, unless you know what 
+you are doing. 
+Description of Problem: 
+ 
+ 
+Steps to reproduce the problem: 
+1. Run attached code under mono 
+2. Observe crash 
+3. Run same code under .NET framework 1.1; no crash. 
+ 
+Actual Results: 
+Here is the output when the program crashes: 
+mj at ds9:~/issues/mono/LinkLabel_Crash$ mono LinkLabel.exe 
+Mono System.Windows.Forms Assembly [$auto_build_revision$] 
+KDE colorscheme read 
+ 
+Unhandled Exception: System.ArgumentException: Invalid Parameter. A null 
+reference or invalid value was found. 
+  at System.Drawing.GDIPlus.CheckStatus (Status status) [0x00000] 
+  at System.Drawing.Graphics.MeasureCharacterRanges (System.String text, 
+System.Drawing.Font font, RectangleF layoutRect, 
+System.Drawing.StringFormat stringFormat) [0x00000] 
+  at (wrapper remoting-invoke-with-check) 
+System.Drawing.Graphics:MeasureCharacterRanges 
+(string,System.Drawing.Font,System.Drawing.RectangleF,System.Drawing.StringFormat) 
+  at System.Windows.Forms.LinkLabel.CreateLinkPieces () [0x00000] 
+  at System.Windows.Forms.LinkLabel.OnTextChanged (System.EventArgs e) 
+[0x00000] 
+  at System.Windows.Forms.Control.set_Text (System.String value) [0x00000] 
+  at System.Windows.Forms.LinkLabel.set_Text (System.String value) 
+[0x00000] 
+  at MRJ.LinkLabelIssue.Form1.SetLabelText (System.String s) [0x00000] 
+  at MRJ.LinkLabelIssue.Form1.BtnCrash_Click (System.Object sender, 
+System.EventArgs e) [0x00000] 
+  at (wrapper delegate-invoke) 
+System.MulticastDelegate:invoke_void_object_EventArgs 
+(object,System.EventArgs) 
+  at System.Windows.Forms.Control.OnClick (System.EventArgs e) [0x00000] 
+  at System.Windows.Forms.Button.OnClick (System.EventArgs e) [0x00000] 
+  at System.Windows.Forms.ButtonBase.OnMouseUp 
+(System.Windows.Forms.MouseEventArgs mevent) [0x00000] 
+  at System.Windows.Forms.Button.OnMouseUp 
+(System.Windows.Forms.MouseEventArgs e) [0x00000] 
+  at System.Windows.Forms.Control.WndProc (System.Windows.Forms.Message m) 
+[0x00000] 
+  at System.Windows.Forms.ButtonBase.WndProc (System.Windows.Forms.Message 
+m) [0x00000] 
+  at System.Windows.Forms.Button.WndProc (System.Windows.Forms.Message m) 
+[0x00000] 
+  at System.Windows.Forms.Control+ControlNativeWindow.WndProc 
+(System.Windows.Forms.Message m) [0x00000] 
+  at System.Windows.Forms.NativeWindow.WndProc (IntPtr hWnd, Msg msg, 
+IntPtr wParam, IntPtr lParam) [0x00000] 
+  at System.Windows.Forms.XplatUIX11.DispatchMessage 
+(System.Windows.Forms.MSG msg) [0x00000] 
+  at System.Windows.Forms.XplatUI.DispatchMessage 
+(System.Windows.Forms.MSG msg) [0x00000] 
+  at System.Windows.Forms.Application.RunLoop (Boolean Modal, 
+System.Windows.Forms.ApplicationContext context) [0x00000] 
+  at System.Windows.Forms.Application.Run (System.Windows.Forms.Form 
+mainForm) [0x00000] 
+  at MRJ.LinkLabelIssue.Form1.Main () [0x00000] 
+ 
+ 
+Expected Results: 
+-Expected no crash as under .NET framework. 
+ 
+How often does this happen?  
+Always