最小化/最大化两个屏幕

Question

我有一个在 2 台显示器上运行的应用程序（比如主屏幕和辅助屏幕）。辅助屏幕没有设置控制框属性。它完全取决于主屏幕的功能。我无法弄清楚的是，如果我将主屏幕最小化到系统任务栏，我也需要最小化辅助屏幕。同样，一旦我最大化主要，次要也应该最大化。

更新 我厌倦了做这样的事情，但把它搞砸了。它会在我不想要的应用程序启动后立即创建 2 个表单。

private void MainForm_Resize(object sender, EventArgs e)
{
     SecondaryLayoutForm secondaryLayoutForm = new SecondaryLayoutForm();
     if (this.WindowState == FormWindowState.Minimized)
     {
         secondaryLayoutForm.Hide();
     }
     else
     {
         secondaryLayoutForm.Show();
     }
}

谢谢

Answer 1

在你的 MainForm 类上试试这个：

private SecondaryLayoutForm secondaryLayoutForm;

private void MainForm_Resize(object sender, EventArgs e)
{
   if (this.secondaryLayoutForm == null)
   {
      this.secondaryLayoutForm = new SecondaryLayoutForm();
   }

   // replace the 'this.ShouldShowSecondaryForm()' call with whatever 
   // your special condition is for showing the secondary form.
   if (this.WindowState != FormWindowState.Minimized && this.ShouldShowSecondaryForm())
   {
        this.secondaryLayoutForm.Show();
   }
   else
   {
        this.secondaryLayoutForm.Hide();
   }
}

这使得 MainForm 负责创建您的 SecondaryLayoutForm 并控制其窗口状态 - 如果您不希望这样做，那么请考虑创建一个 UIManager 类或其他东西来分离它。

更新

我用 2 个表单编写的示例应用程序。这是 Form1 中的内容，Form2 上只有一个文本框，因此它与 Form1 明显不同。

public partial class Form1 : Form
{
    private Form2 f2;

    public Form1()
    {
        InitializeComponent();
        this.Resize += new System.EventHandler(Form1_Resize);

        // Initialize Form2 
        f2 = new Form2();
    }

    void Form1_Resize(object sender, System.EventArgs e)
    {
       // whenever I change the size of Form1, make sure 
       // Form2 has the same WindowState
       f2.WindowState = this.WindowState;
    }

    // This is your condition to either show or hide the form.
    //
    // Rather than a checkbox, have something that will respond to whatever 
    // condition you have set out - probably an event on another class.
    private void checkBox1_CheckedChanged(object sender, EventArgs e)
    {
        if (checkBox1.Checked)
        {
            f2.Show();
        }
        else
        {
            f2.Hide();
        }
    }
}

更新：如何从不同的班级执行此操作的示例

public partial class UIManager
{
    private Form2 f1;
    private Form2 f2;
    private bool shouldShowForm2 = false;

    public bool ShouldShowForm2 
    { 
       get { return shouldShowForm2; }
       set { shouldShowForm2 = value;  OnShouldShowForm2Changed(); }
    }

    public UIManager()
    {
        InitializeComponent();

        // Initialize Forms
        f1 = new Form1();
        f2 = new Form2();
        f1.Resize += new System.EventHandler(f1_Resize);
        f1.Show();
    }

    void f1_Resize(object sender, System.EventArgs e)
    {
       // whenever I change the size of Form1, make sure 
       // Form2 has the same WindowState
       f2.WindowState = f1.WindowState;
    }

    // This is your condition to either show or hide the form.
    private void OnShouldShowForm2Changed(object sender, EventArgs e)
    {
        if (ShouldShowForm2)
        {
            f2.Show();
        }
        else
        {
            f2.Hide();
        }
    }
}

但是，无论您是从其中一个表单还是从一个单独的类执行此操作，都需要引用这两个表单，以便同步窗口状态。