Question

我有一个主要表单，它是隐形的，在某些时候会创建一个子表单。那个子表单在designer.cs中看起来像这样：

        this.listBox1 = new System.Windows.Forms.ListBox();
        this.SuspendLayout();
        // 
        // listBox1
        // 
        this.listBox1.FormattingEnabled = true;
        //this.listBox1.Location = new System.Drawing.Point(0, 0);
        this.listBox1.Name = "listBox1";
        this.listBox1.Size = new System.Drawing.Size(255, 147);
        this.listBox1.TabIndex = 0;
        // 
        // Form2
        // 
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.AutoSize = true;
        this.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
        this.ClientSize = new System.Drawing.Size(502, 384);
        this.ControlBox = false;
        this.Controls.Add(this.listBox1);
        this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
        this.Name = "Form2";
        this.Text = "Form2";

在主要表单中，我按如下方式创建Form2：

    Form2 a = new Form2(new Point(0, Screen.PrimaryScreen.WorkingArea.Height / 2)); //This is the location
                        Thread thtt = new Thread((ThreadStart)delegate()
                            {
                                a.CreateControl();
                                a.Show();
                                TimeSpan slept = TimeSpan.Zero;
                                while (!a.Created && slept < TimeSpan.FromMilliseconds(2000))
                                {
                                    Thread.Sleep(99);
                                    slept += TimeSpan.FromMilliseconds(99);
                                }
                                if (!a.Created)
                                {
                                    MessageBox.Show("after 2 sec no creation?");
                                    System.Diagnostics.Debugger.Break();
                                }
                                else
                                {
                                    //a.Show();
                                    a.Invoke((MethodInvoker)delegate()
                                    {

                                        a.TopMost = true;
                                        a.Location = new Point(0, Screen.PrimaryScreen.WorkingArea.Height / 2);
                                        Cursor.Position = new Point(a.Location.X + 10, a.Location.Y + 10);
                                        a.AddAndAct(minimized);

                                    });
                                }
                                aa = a;
                            });
                        thtt.IsBackground = true;
                        thtt.Start();

我遇到的问题是，Form2实际上正在闪烁，但随后神奇地消失了。任何建议都适用。

谢谢你的建议，Alex

Answer 1

Alex - 我认为这是你的问题：

How to create a form on its own thread and keep it open throughout application lifetime

接受的答案是非常正确的，因为我也在我的应用程序中使用它，并且忘记了它。 =）

“您需要在新创建的线程上启动消息循环。您可以通过调用Application.Run（form）来执行此操作。”

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1 个答案: