[Mono-bugs] [Bug 61656][Nor] New - Cannot call PrintPageEventArgs.Graphics.DrawString twice

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Changed by michael.haider@hofstaedtler.com.

http://bugzilla.ximian.com/show_bug.cgi?id=61656

--- shadow/61656	2004-07-16 05:46:54.000000000 -0400
+++ shadow/61656.tmp.10758	2004-07-16 05:46:54.000000000 -0400
@@ -0,0 +1,118 @@
+Bug#: 61656
+Product: Mono: Runtime
+Version: unspecified
+OS: other
+OS Details: Debian 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: misc
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: michael.haider@hofstaedtler.com               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: Cannot call PrintPageEventArgs.Graphics.DrawString twice
+
+Please fill in this template when reporting a bug, unless you know what you
+are doing.
+Description of Problem:
+
+Cannot call PrintPageEventArgs.Graphics.DrawString twice!
+As you can see, the following example calls the DrawString function twice,
+with the result that the 2 call produces an Unhandeld Exeption error!
+
+If I just call the function once it works all fine!
+
+On Windows the problem does not exists!
+
+I have gtk-sharp.dll 1.0.0.0 and System.Drawing 1.0.5000.0 on Windows and
+Debian installed!
+
+Steps to reproduce the problem:
+
+using System;
+using Gtk;
+using GtkSharp; 
+using System.Drawing.Printing;
+using System.Drawing;
+
+class PrintSample
+{
+	TextView tv; 
+	Font	printFont;
+
+static void Main () 
+	{ 
+		new PrintSample ();
+	} 
+
+		PrintSample () 
+		{ 
+
+            Application.Init ();
+            Gtk.Window win = new Gtk.Window ("Print sample");
+            win.SetDefaultSize (400, 300); 
+            win.DeleteEvent += new DeleteEventHandler (OnWinDelete); 
+            VBox vbox = new VBox (false, 0); 
+            win.Add (vbox); 
+            tv = new TextView (); 
+            tv.Buffer.Text = "Hello World"; 
+            vbox.PackStart (tv, true, true, 0); 
+            Button print = new Button (Gtk.Stock.Print); 
+            print.Clicked += new EventHandler (OnPrintClicked); 
+            vbox.PackStart (print, false, true, 0); 
+            win.ShowAll (); 
+            Application.Run (); 
+		} 
+
+
+	void OnPrintClicked (object o, EventArgs args) 
+	{ 
+		
+		PrintDocument pd = new PrintDocument();
+		pd.PrintPage += new PrintPageEventHandler(pd_PrintPage);
+      	pd.Print();
+	} 
+	public void pd_PrintPage(object sender, PrintPageEventArgs ev)
+	{
+		printFont = new Font("Arial", 20);
+		ev.Graphics.DrawString("foo",printFont,Brushes.Black,10,10);
+		printFont = new Font("Arial", 10);
+		ev.Graphics.DrawString("bar",printFont,Brushes.Black,100,10);
+		
+		Pen pen = new Pen(Color.Red);
+		Rectangle rectangle = new Rectangle();
+		rectangle.X = 100;
+		rectangle.Y = 100;
+		rectangle.Width = 100;
+		rectangle.Height = 100;
+		ev.Graphics.DrawRectangle(pen,rectangle);
+		
+		rectangle.X = 200;
+		rectangle.Y = 200;		
+		rectangle.Width = 400;
+		rectangle.Height = 500;
+		ev.Graphics.DrawRectangle(pen,rectangle);
+				
+	}
+	void OnWinDelete (object o, DeleteEventArgs args)
+	{
+		Application.Quit ();
+	}
+}  
+
+Actual Results:
+Unhandeld Exeption: System.NullReferenceExeption
+
+to see the full message go to http://www.hofstaedtler.com/edv/monoerror.gif
+
+Expected Results:
+no error
+
+How often does this happen? 
+everytime
+
+Additional Information: