https://bugzilla.novell.com/show_bug.cgi?id=374663
Summary: Setting MdiParent crashes with Unhandled Exception Product: Mono: Class Libraries Version: 1.9.0 Platform: i686 OS/Version: Linux Status: NEW Severity: Normal Priority: P5 - None Component: Windows.Forms AssignedTo: mono-bugs@lists.ximian.com ReportedBy: [EMAIL PROTECTED] QAContact: mono-bugs@lists.ximian.com Found By: Third Party Developer/Partner This problem is encountered when trying to run FreeTrain (http://freetrain.sourceforge.net/) - an open source .NET game we are porting to Mono. The source can be found here: http://freetrain.svn.sourceforge.net/svnroot/freetrain/branches/FreeTrainSDL Using MonoDevelop 1.0, running FreeTrain using the instructions found here: http://freetrain.sourceforge.net/forum/viewtopic.php?f=6&t=21 When running FreeTrain the game screen briefly shows before it crashes and exits immediately . The cause of the crash is setting MdiParent on a Form, used to manage the child windows for the game. Commenting out each MdiParent assignment (there are several in the offending block of code) causes the crash to move to the next MdiParent assignment. Comment them all out and the game runs without crashing. Example: mainWindowMDI = new MainWindowMDI(); mainWindowMDI.Show(); RailRoadController.create(); RailRoadController.theInstance.Hide(); RailRoadController.theInstance.MdiParent = mainWindowMDI; // never reaches here RailRoadController.theInstance.WindowState = FormWindowState.Maximized; RailRoadController.theInstance.Show(); The exception: Unhandled Exception: System.InvalidCastException: Cannot cast from source type to destination type. at System.Windows.Forms.MdiClient.ActivateChild (System.Windows.Forms.Form form) [0x00045] in /usr/src/redhat/BUILD/mono-1.9/mcs/class/Managed.Windows.Forms/System.Windows.Forms/MdiClient.cs:702 at System.Windows.Forms.MdiClient.set_ActiveMdiChild (System.Windows.Forms.Form value) [0x00000] in /usr/src/redhat/BUILD/mono-1.9/mcs/class/Managed.Windows.Forms/System.Windows.Forms/MdiClient.cs:953 at (wrapper remoting-invoke-with-check) System.Windows.Forms.MdiClient:set_ActiveMdiChild (System.Windows.Forms.Form) at System.Windows.Forms.MdiClient+ControlCollection.Add (System.Windows.Forms.Control value) [0x00049] in /usr/src/redhat/BUILD/mono-1.9/mcs/class/Managed.Windows.Forms/System.Windows.Forms/MdiClient.cs:81 at System.Windows.Forms.Form.set_MdiParent (System.Windows.Forms.Form value) [0x00079] in /usr/src/redhat/BUILD/mono-1.9/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Form.cs:923 at (wrapper remoting-invoke-with-check) System.Windows.Forms.Form:set_MdiParent (System.Windows.Forms.Form) at FreeTrain.FreeTrainSDL.Go () [0x0050e] in /home/charles/Games/svn/FreeTrainSDL/Program.cs:432 at FreeTrain.FreeTrainSDL.Main () [0x00006] in /home/charles/Games/svn/FreeTrainSDL/Program.cs:319 System information: Fedora 8 (up to date), uninstalled Fedora Mono (1.2.5, not current enough to run FreeTrain) and installed Mono 1.9 from the OpenSuSE Mono repo for yum: [EMAIL PROTECTED] jin-2.14.1]$ cat /etc/yum.repos.d/mono.repo [Mono Stack] baseurl=http://download.opensuse.org/repositories/Mono/Fedora_8/ gpgcheck=1 gpgkey=http://download.opensuse.org/repositories/Mono/Fedora_8/repodata/repomd.xml.key disabled=no type=rpm-md [Mono_Community] name=Mono Community (Fedora_8) type=rpm-md baseurl=http://download.opensuse.org/repositories/Mono:/Community/Fedora_8/ gpgcheck=1 gpgkey=http://download.opensuse.org/repositories/Mono:/Community/Fedora_8/repodata/repomd.xml.key disabled=no [mono rhel] name=Mono Stack (RHEL_5) type=rpm-md baseurl=http://download.opensuse.org/repositories/Mono/RHEL_5/ gpgcheck=1 gpgkey=http://download.opensuse.org/repositories/Mono/RHEL_5/repodata/repomd.xml.key disabled=no -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the QA contact for the bug. You are the assignee for the bug. _______________________________________________ mono-bugs maillist - mono-bugs@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-bugs