WebOct 26, 2015 · Before calling the anonymous delegate to update your UI components, add the following check: C# //Fixed window handle issue. if (! m_form.IsHandleCreated ) … WebJun 6, 2011 · Basically what it says is that the handle could be recreated during the load of the form which would explain why IsHandleCreated would return true one minute and false the other. The earliest point of when to assume that all handles are created (and recreated), so it would be safe for another thread to do Invoke, is from the Form's Load event.
Control.Invoke blocks on WaitOne while UI Thread continues to run?
Webform.HandleCreated -= OnHandleCreated; hSysMenu = GetSystemMenu (form.Handle, false); // Add all queued commands now if (pendingCommands != null) { foreach (CommandInfo command in pendingCommands) { if (command.Separator) { AppendMenu (hSysMenu, MF_SEPARATOR, 0, ""); } AppendMenu (hSysMenu, MF_STRING, … WebApr 9, 2024 · 本文实例总结了C#子线程更新UI控件的方法，对于桌面应用程序设计的UI界面控制来说非常有实用价值。分享给大家供大家参考之用。具体分析如下： 一般在winform C/S程序中经常会在子线程中更新控件的情况，桌面程序UI线程是主线程，当试图从子线程直接修改控件属性时会出现“从不是创建控件的 ... ciljevi tvrtke
Pls help: a problem about IsHandleCreated property - C# / C Sharp
WebForm c = new Form (); c.BringToFront (); Assert.IsFalse (c.IsHandleCreated, "A1"); c.Contains (new Form ()); Assert.IsFalse (c.IsHandleCreated, "A2"); c.CreateControl (); Assert.IsFalse (c.IsHandleCreated, "A3"); c = new Form (); Graphics g = c.CreateGraphics (); g.Dispose (); Assert.IsTrue (c.IsHandleCreated, "A4"); c.Dispose (); c = new Form … WebJun 25, 2009 · Form form = new MainWindow(); Application.Run(form);}} // My Button provides a CallMe method which another thread calls Invoke() on. class MyButton: Button {public void CallMe() {} protected override void Dispose(bool disposing) {// IsHandleCreated will be false when disposing, causing the Invoke method // to hang because … WebFeb 6, 2012 · 1 Answer Sorted by: 13 TabControl's AddTabPage method (the one that is called when the handle is created) calls the AddNativeTabPage method. That in turn … cilji ozn