隐形父母的孩子形式永远不会被显示?
我有一个主窗体,它是不可见的,并且在某些时候会创建一个子窗体。该子窗体在 Designer.cs 中如下所示:
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";
在主窗体中,我创建 Form2 如下:
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,亚历克斯
I have a main form, which is invisible and at some point creates a child form. That child form looks like this in designer.cs:
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";
and in the main form I'm creating the Form2 as follows:
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();
The problem I'm encountering is, that the Form2 is actually flashing, but then disappears magically. Any suggestions appriciated.
Thanks in advice, Alex
如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。

绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱,如果其他用户或者作者回复了您的评论,将不能在第一时间通知您!
发布评论
评论(1)
亚历克斯 - 我认为这是你的问题:
如何在自己的线程上创建表单并在整个应用程序生命周期中保持打开状态
接受的答案非常正确,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) 来做到这一点。”
Alex - I think this is your problem:
How to create a form on its own thread and keep it open throughout application lifetime
The accepted answer is very true, for I use it in my applications as well, and had forgotten about it. =)
"You will need to start a message loop on the newly created thread. You can do that by calling Application.Run(form)."