Cannot Register Window Class Win32 Error 0

Answers Feedback Issue Tracker Blog Evangelists User Groups Navigation Home Unity Industries Showcase Learn Community Forums Answers Feedback Issue Tracker Blog Evangelists User Groups Get Unity Asset Store Unity account You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account Language Chinese Spanish Japanese Korean Portuguese Ask a question Spaces Default Help Room META Moderators Topics Questions Users Badges Home / 0 Question by TwILeK · Mar 30, 2015 at 09:46 AM · windows-standaloneexternal tools How to disable: Could not register the window class, win32 error 0 I create a DLL with Windows.Forms and add it to Unity pugins directory. In this dll i open a simple Window and create Windows.Forms components ... Yes, i required these dll, and require windows forms :) The frist time when i call the Windows.Forms.Form f = new Windows.Forms.Form(); no error, all ok i close the window and open it again i get these error message twice: Could not register the window class, win32 error 0 But the form is open and all work correctly! What is the problem or what is the workaround? Comment Add comment · Show 2 10 |3000 characters needed characters left characters exceeded ▼ Viewable by all users Viewable by moderators Viewable by moderators and the original poster Advanced visibility Viewable by all users daybson.paisante · Apr 02, 2015 at 03:53 PM 0 Share I'm trying to use Windows Forms in Unity too, same problem here. Take a look an do a test: http://forum.unity3d.com/threads/problems-when-used-in-the-system-windows-forms-unity3-5-4.151964/ Crashnorun · Dec 04, 2015 at 10:36 AM 0 Share I'm running into the same issue. Has there been a solution for this? Thanks, 1 Reply · Add your reply Sort: 0 Answer by TwILeK · Dec 05, 2015 at 06:09 PM I make a simple app to solve this problem (i don't know why can't by Unity Dev team ....) So, make a small app, when search and close the error window: [DllImport( "user32.dll" )] public static extern IntPtr FindWindow( string lpClassName, string lpWindowName ); [DllImport( "user32.dll" )] public static extern int SendMessage( IntPtr hWnd, uint Msg, int wParam, int lParam

Forums Answers Feedback Issue Tracker Blog Evangelists User Groups Navigation Home Unity Services Made with Unity Learn Community Forums Answers Feedback Issue Tracker Blog Evangelists User Groups Asset Store Get Unity http://answers.unity3d.com/questions/935903/how-to-disable-could-not-register-the-window-class.html Unity Account You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account Language 中文 한국어 Portugués Русский Español https://forum.unity3d.com/threads/problems-when-used-in-the-system-windows-forms-unity3-5-4.151964/ 日本語 Unity Community Forums Forums Forums Quick Links Search Forums Recent Posts Menu The 5.5 Beta is now available. Click here for more details! Get early access to our Google Daydream Technical preview. Click here for more details! Become a closed-alpha partner on the new Facebook games platform. Read more about it here. Enter the Samsung TIZEN App Challenge for a chance to win prizes. Read more about it here. Download the 5.5 Beta Now Daydream Preview New Facebook Games Platform Samsung TIZEN App Challenge Unity Community - Error unity_authentication_failed Your name or email address: Password: Forgot your password? Stay logged in

here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or http://stackoverflow.com/questions/9969524/registerclass-error-in-unity-editor-when-using-mono-winforms posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss http://stackoverflow.com/questions/128561/registering-a-custom-win32-window-class-from-c-sharp Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up RegisterClass error in Unity Editor when using Mono.WinForms up vote 1 down vote favorite 1 I'm using Mono.WinForms to create external windows in Unity and it works great except that I get this error message each cannot register time I play the scene (but never the first time when Unity is freshly started): Could not register the window class, win32 error 0. I figured that it was because that the form classes are not unregistered when I stop the scene. They do get unregistered when I restart Unity and I don't have the problem when I make a build, which makes sense. I get this popup error twice and it's caused by: myForm = new Form1(); myForm.Show(); I went cannot register window through the code of the XplatUIWin32.cs file and found the RegisterWindowClass method. When Mono registers a class it does this: class_name = string .Format("Mono.WinForms.{0}.{1}", System.Threading.Thread.GetDomainID ().ToString (), classStyle); So I managed to get rid of the second error by doing this: UnregisterClass("Mono.WinForms.1.0", IntPtr.Zero); So my question is why does it only work for the 2nd popup error and how do I get rid of the 1st one? I tried to force the garbage collection but it didn't help. I tried to find another registered class name but no luck here neither. For info I use the mono version of System.Windows.Forms.dll as a reference, compile my code in Visual Studio and import the produced DLL in Unity. It works great apart from those popup errors. c# winforms mono unity3d registerclass share|improve this question edited Apr 14 '12 at 10:04 Lex Li 29.2k34365 asked Apr 2 '12 at 0:16 Gratoo 62 I think the 2nd class is SWFClass1 with IntPtr.Zero as a parent but it returns False when I try to unregister it even though the form is closed and disposed. –Gratoo Apr 5 '12 at 2:07 add a comment| active oldest votes Know someone who can answer? Share a link to this question via email, Google+, Twitter, or Facebook. Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest N

here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Registering a custom win32 window class from c# up vote 10 down vote favorite 3 I have a new application written in WPF that needs to support an old API that allows it to receive a message that has been posted to a hidden window. Typically another application uses FindWindow to identify the hidden window using the name of its custom window class. 1) I assume to implement a custom window class I need to use old school win32 calls? My old c++ application used RegisterClass and CreateWindow to make the simplest possible invisible window. I believe I should be able to do the same all within c#. I don't want my project to have to compile any unmanaged code. I have tried inheriting from System.Windows.Interop.HwndHost and using System.Runtime.InteropServices.DllImport to pull in the above API methods. Doing this I can successfully host a standard win32 window e.g. "listbox" inside WPF. However when I call CreateWindowEx for my custom window it always returns null. My call to RegisterClass succeeds but I am not sure what I should be setting the WNDCLASS.lpfnWndProc member to. 2) Does anyone know how to do this successfully? c# windows winapi interop share|improve this question edited Sep 26 '08 at 9:34 asked Sep 24 '08 at 17:35 morechilli 6,16332447 add a comment| 4 Answers 4 active oldest votes up vote 27 down vote accepted For the record I finally got this to work. Turned out the difficulties I had were down to string marshalling problems. I had to be more precise in my importing of win32 functions. Below is the code that will create a custom window class in c# - useful for supporting old APIs you might have that rely on custom window classes. It should work in either WPF or Winforms as l