[Mono-bugs] [Bug 75063][Nor] New - Graphics.DrawImage(Image, PointF[]) throws exception

bugzilla-daemon at bugzilla.ximian.com bugzilla-daemon at bugzilla.ximian.com
Fri May 27 05:31:22 EDT 2005


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Changed by davide.morelli at parser.it.

http://bugzilla.ximian.com/show_bug.cgi?id=75063

--- shadow/75063	2005-05-27 05:31:22.000000000 -0400
+++ shadow/75063.tmp.21539	2005-05-27 05:31:22.000000000 -0400
@@ -0,0 +1,75 @@
+Bug#: 75063
+Product: Mono: Class Libraries
+Version: 1.1
+OS: Mac OS X 10.3
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: Sys.Drawing.
+AssignedTo: mono-bugs at ximian.com                            
+ReportedBy: davide.morelli at parser.it               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: Graphics.DrawImage(Image, PointF[]) throws exception
+
+Description of Problem:
+Graphics.DrawImage(Image, PointF[]) and Graphics.DrawImage(Image, Point[])
+throw exception
+
+
+Steps to reproduce the problem:
+1. create a Form
+
+2. place an image with filename "test.jpg" in its folder
+
+3. load the image and try to draw it using Graphics.DrawImage(Image, 
+PointF[])
+
+follows an example code to be put in the onPaint event handler of the 
+Form:
+
+ private void Form1_Paint(object sender, 
+System.Windows.Forms.PaintEventArgs e)
+                {
+                        Image newImage = Image.FromFile
+(Application.StartupPath.ToString()+"/test.jpg");
+                        try{
+                        PointF [] punti = new PointF[3];
+                        punti[0]=new PointF(10f,10f);
+                        punti[1]=new PointF(100f,0f);
+                        punti[2]=new PointF(20f,100f);
+                        e.Graphics.DrawImage(newImage,punti);
+                        } catch(Exception ex)
+                        {
+                                MessageBox.Show(ex.ToString());
+                        }
+                       
+                }
+
+
+Actual Results:
+
+System.ArgumentException: Invalid Parameter. A null reference or invalid 
+value was found.
+in <0x000BB> System.Drawin.GDIPlus:CheckStatus (Status status)
+in <0x00060> System.Drawin.Graphics:DrawImage(System.Drawing.Image image, 
+System.Drawing.PointF[] destPoints)
+in (wrapper remoting-invoke-with-check) 
+SystemSystem.Drawin.Graphics:DrawImage
+(System.Drawing.Image,System.Drawing.PointF[])
+
+
+Expected Results:
+Image drawn on the form
+
+How often does this happen? 
+always
+
+Additional Information:
+I am using mono 1.1.7
+os: 10.3 tiger
+hw: MacMini


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