C # Panel als MDI Container

Question

In C # Ich möchte ein Panel erstellen, die die Eigenschaften eines MDI Container dh hat. IsMdiContainer = true.

Ich habe versucht, so etwas wie diese

form.MDIParent = this.panel1;

Aber das tun sie nicht arbeiten. Irgendwelche Vorschläge?

Answer 1

Sie können benutzerdefinierte Formular erstellen, entfernen Sie alle Grenzen und Symbolleisten es so nah an einer Platte wie möglich aussehen zu lassen. Dann machen Sie das neue benutzerdefinierte eine MdiContainer bilden.

Grundsätzlich können Sie nur die IsMDIContainer Eigenschaft in einem Formular festgelegt. Das bedeutet, dass nur eine Form ein MdiContainer sein kann.

Answer 2

Es ist möglich, eine MDI-Panel und zeigen Formen in diesem Panel, so etwas wie der Code unten erstellen wird die Arbeit

Mdi-Panel-Definiton:

public class MdiClientPanel : Panel
{
    private Form mdiForm;
    private MdiClient ctlClient = new MdiClient();

    public MdiClientPanel()
    {
        base.Controls.Add(this.ctlClient);
    }

    public Form MdiForm
    {
        get
        {
            if (this.mdiForm == null)
            {
                this.mdiForm = new Form();
                /// set the hidden ctlClient field which is used to determine if the form is an MDI form
                System.Reflection.FieldInfo field = typeof(Form).GetField("ctlClient", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
                field.SetValue(this.mdiForm, this.ctlClient);
            }
            return this.mdiForm;
        }
    }
}

Verbrauch:

/// mdiChildForm is the form that should be showed in the panel
/// mdiClientPanel is an instance of the MdiClientPanel
myMdiChildForm.MdiParent = mdiClientPanel1.MdiForm;

Answer 3

habe ich Mathias Antwort oben und konnte die meisten der Fragen in den Kommentaren angehoben loszuwerden. Ich habe auch eine Hilfsklasse für die untergeordneten Formulare, falls jemand wollte, es zu benutzen und / oder es besser zu machen.

    public class MdiClientPanel : Panel
{
    private MdiClient _ctlClient = new MdiClient();

    // Callback event when a child is activated
    public delegate void ActivateHandler(object sender, MdiClientForm child);
    public event ActivateHandler OnChildActivated;

    /// <summary>
    /// The current active child form
    /// </summary>
    public Form ActiveMDIWnd
    {
        get;
        set;
    }

    /// <summary>
    /// List of available forms
    /// </summary>
    public List<MdiClientForm> ChildForms = new List<MdiClientForm>();

    /// <summary>
    /// Std constructor
    /// </summary>
    public MdiClientPanel()
    {
        base.Controls.Add(_ctlClient);
    }

    private Form _mdiForm = null;
    public Form MdiForm
    {
        get
        {
            if (_mdiForm == null)
            {
                _mdiForm = new Form();
                // Set the hidden _ctlClient field which is used to determine if the form is an MDI form
                System.Reflection.FieldInfo field = typeof(Form).GetField("ctlClient", 
                    System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);

                field.SetValue(_mdiForm, _ctlClient);
            }
            return _mdiForm;
        }
    }

    private void InitializeComponent()
    {
        SuspendLayout();
        ResumeLayout(false);
    }

    /// <summary>
    /// Add this Form to our list of children and set the MDI relationship up
    /// </summary>
    /// <param name="child">The new kid</param>
    /// <returns>The new kid</returns>
    public MdiClientForm AddChild(MdiClientForm child)
    {
        child.MyMdiContainer = this;
        child.MdiParent = MdiForm;
        ChildForms.Add(child);

        return child;
    }

    /// <summary>
    /// The user sent a "restore" command, so issue it to all children
    /// </summary>
    public void RestoreChildForms()
    {
        foreach (DataTableForm child in ChildForms)
        {
            child.WindowState = FormWindowState.Normal;
            child.MaximizeBox = true;
            child.MinimizeBox = true;
        }
    }

    /// <summary>
    /// Send the Activated message to the owner of this panel (if they are listening)
    /// </summary>
    /// <param name="child">The child that was just activated</param>
    public void ChildActivated(MdiClientForm child)
    {
        ActiveMDIWnd = child;

        if (OnChildActivated != null)
            OnChildActivated(this, child);
    }

    /// <summary>
    /// The child closed so remove them from our available form list
    /// </summary>
    /// <param name="child">The child that closed</param>
    public void ChildClosed(MdiClientForm child)
    {
        ChildForms.Remove(child);
    }
}

/// <summary>
/// A wrapper class for any form wanting to be an MDI child of an MDI Panel
/// </summary>
public class MdiClientForm : Form
{
    /// <summary>
    /// My parent MDI container
    /// </summary>
    public MdiClientPanel MyMdiContainer { get; set; }

    /// <summary>
    /// Standard Constructor
    /// </summary>
    public MdiClientForm()
    {
        Activated += OnFormActivated;
        FormClosed += OnFormClosed;
    }

    /// <summary>
    /// Reports back to the container when we close
    /// </summary>
    void OnFormClosed(object sender, FormClosedEventArgs e)
    {
        MyMdiContainer.ChildClosed(this);
    }

    /// <summary>
    /// Reports back to the parent container when we are activated
    /// </summary>
    private void OnFormActivated(object sender, EventArgs e)
    {
        MyMdiContainer.ChildActivated(this);
    }
}