Error Creating Windows Handle
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Windows Handler Error
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Error Creating Window Handle Sql
million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Winforms issue - Error creating window handle [duplicate] up vote 38 down vote favorite 9 This question already has an answer here: “Error Creating Window Handle” 5 answers We are seeing this error in a Winform application.
Error Creating Window Handle Sql Server Management Studio
Can anyone help on why you would see this error, and more importantly how to fix it or avoid it from happening. System.ComponentModel.Win32Exception: Error creating window handle. at System.Windows.Forms.NativeWindow.CreateHandle(CreateParams cp) at System.Windows.Forms.Control.CreateHandle() at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible) at System.Windows.Forms.Control.CreateControl() at System.Windows.Forms.Control.OnVisibleChanged(EventArgs e) at System.Windows.Forms.ButtonBase.OnVisibleChanged(EventArgs e) c# windows winforms window-handles share|improve this question edited Jan 30 '11 at 4:02 Yi Jiang 35.6k11105121 asked Oct 21 '08 at 17:01 leora 17.6k2286321114 marked as duplicate by slugster, ecatmur, mattytommo, Anujith, ixe013 Feb 27 '13 at 14:54 This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. add a comment| 10 Answers 10 active oldest votes up vote 36 down vote accepted Have you run Process Explorer or the Windows Task Manager to look at the GDI Objects, Handles, Threads and USER objects? If not, select those columns to be viewed (Task Manager choose View->Select Columns... Then run your app and take a
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8 2012 11:41 http://www.infragistics.com/community/forums/t/74394.aspx PM Reply I am getting this http://weblogs.asp.net/fmarguerie/cannot-create-window-handle-desktop-heap error on occasion throughout the day. I dont even know where to begin to solve or figure out where this is coming from. Thoughts? I see the infragistics wineditors in error creating the errors... I am using 10.3 windows Roger Application Domain: Axeium.exeAssembly Codebase: file://chcsql01/CCProNETFiles/Axeium/DeployFolder/Axeium.exeAssembly Full Name: Axeium, Version=3.0.4663.28642, Culture=neutral, PublicKeyToken=nullAssembly Version: 3.0.4663.28642Assembly Build Date: 10/7/2012 4:54:44 PM Exception Source: System.Windows.FormsException Type: System.ComponentModel.Win32ExceptionException Message: Error creating window handle.Exception Target Site: error creating window CreateHandle ---- Stack Trace ---- System.Windows.Forms.NativeWindow.CreateHandle(cp As CreateParams) Axeium.exe: N 00784 System.Windows.Forms.Control.CreateHandle() Axeium.exe: N 00292 System.Windows.Forms.Control.get_Handle() Axeium.exe: N 00068 System.Windows.Forms.Control.PointToClientInternal(p As Point) Axeium.exe: N 00081 System.Windows.Forms.Control.PointToClient(p As Point) Axeium.exe: N 00013 Infragistics.Win.UltraWinEditors.StyleUtils.IsHottracking(ctrl As Control) Axeium.exe: N 00082 Infragistics.Win.UltraWinEditors.TextEditorControlBase.ResolveAppearance(appearance As AppearanceData&, requestedProps As AppearancePropFlags&, includeNullTextAppearance As Boolean) Axeium.exe: N 00125 Infragistics.Win.UltraWinEditors.TextEditorControlBase.ResolveAppearance(appearance As AppearanceData&, requestedProps As AppearancePropFlags&) Axeium.exe: N 00010 Infragistics.Win.UltraWinEditors.EditorWithComboOwner.ResolveAppearance(ownerContext As Object, appearance As AppearanceData&, requestedProps As AppearancePropFlags&, area As EmbeddableEditorArea, hotTracking As Boolean, customArea As String) Axeium.exe: N 00128 Infragistics.Win.EditorWithTextAndDropDownUIElementBase.InitAppearance(appearance As AppearanceData&, requestedPropFlags As AppearancePropFlags&) Axeium.exe: N 00273 Infragistics.Win.EmbeddableUIElementBase.InitAppearanceInternal(appearance As AppearanceData&, requestedProps As AppearancePropFlags&) Axeium.exe: N 00013 Infragistics.Win.EmbeddableTextBox.ApplyAppearance() Axeium.exe: N 00124 Infragistics.Win.EditorWithCombo.Infragistics.Win.IValueListOwner.OnSelectedItemChanged() Axeium.exe: N 00390 Infragistics.Win.ValueList.ProcessSelectedIndexChanged(selectedIndex As Int32, commit As Boolean) Axe
on for a client is used actively, users often get "Error creating window handle" exceptions. Aside from the fact that the application consumes too much resources, which is a separate issue altogether that we are already addressing, we had difficulties with determining what resources were getting exhausted as well as what the limits are for these resources.We first thought about keeping an eye on the Handles counter in the Windows Task Manager. That was because we noticed that some processes tended to consume more of these resources than they normally should. However, this counter is not the good one because it keeps track of resources such as files, sockets, processes and threads. These resources are named Kernel Objects. The other kinds of resources that we should keep an eye on are the GDI Objects and the User Objects. You can get an overview of the three categories of resources on MSDN. User Objects Window creation issues are directly related to User Objects. We tried to determine what the limit is in terms of User Objects an application can use.There is a quota of 10,000 user handles per process. This value can be changed in the registry, however this limit was not the real show-stopper in our case. The other limit is 66,536 user handles per Windows session. This limit is theoretical. In practice, you'll notice that it can't be reached. In our case, we were getting the dreaded "Error creating window handle" exception before the total number of User Objects in the current session reached 11,000. Desktop Heap We then discovered which limit was the real culprit: it was the "Desktop Heap".By default, all the graphical applications of an interactive user session execute in what is named a "desktop". The resources allocated to such a desktop are limited (but configurable). Note: User Objects are what consumes most of the Desktop Heap's memory space. This includes windows. For more information about the Desktop Heap, you can refer to the very good articles published on the NTDebugging MSDN blog: Desktop Heap Overview Desktop Heap, part 2 Desktop Heap Monitor (dheapmon.exe) It's possible to monitor the Desktop Heap usage thanks to a command line tool: Desktop Heap Monitor (dheapmon.exe). It would be interesting to monitor this usage directly from within applications to prevent crashes. We could let users know that all the resources are about to be exhausted, and ask them to close windows and prevent them from opening new screens. This would help to avoid the "Error creating window handle" errors. When these exceptions occur, it's difficult to handle them gracefully an