C#

Matt U. wrote:

So, if the item is visible and you then do 'item.Visible = false;' does that make it disappear? And how about after 'Visible' is set to 'false'? If you then call 'item.Visible = true;' does the item actually show up again?

item.Visible = true;
bool isVisible = item.Visible;

private void SetMenuItemsVisiblity(MenuStrip menuStrip)
{
    foreach (ToolStripMenuItem item in menuStrip.Items)
    {
        item.Visible = item.Enabled;
        if (item.Visible && item.DropDownItems.Count > 0)
            SetToolStripMenuItemVisiblity(item);
    }
}
private void SetToolStripMenuItemVisiblity(ToolStripMenuItem item)
{
    foreach (ToolStripMenuItem subItem in item.DropDownItems)
    {
        subItem.Visible = subItem.Enabled;
        if (subItem.Visible && item.DropDownItems.Count > 0)
            SetToolStripMenuItemVisiblity(subItem);
    }
}

DaveyM69 wrote:

This is the correct behaviour. As the parent menu item isn't visible, it is impossible for the child to be visible therefore setting the Visible property has no effect.

DaveyM69 wrote:

then my article[^] for a more complete tutorial

glennPattonWork wrote:

all seems to be forward and not backward passing

// ThreeIntsEventArgs.cs
/* Arguments and delegate for FormChild.ThreeIntsEvent */

using System;

public delegate void ThreeIntsEventHandler(object sender, ThreeIntsEventArgs e);

public class ThreeIntsEventArgs : EventArgs
{
    private int x;
    private int y;
    private int z;

    public ThreeIntsEventArgs(int x, int y, int z)
    {
        this.x = x;
        this.y = y;
        this.z = z;
    }

    public int X
    {
        get { return x; }
    }
    public int Y
    {
        get { return y; }
    }
    public int Z
    {
        get { return z; }
    }
}

// FormChild.cs
/* Click OK to raise event sending the three values */

using System.Drawing;
using System.Windows.Forms;

public partial class FormChild : Form
{
    public event ThreeIntsEventHandler ThreeInts;

    private NumericUpDown numericUpDownX;
    private NumericUpDown numericUpDownY;
    private NumericUpDown numericUpDownZ;
    private Button buttonOK;

    public FormChild()
    {
        InitializeComponent();
        // numericUpDownX
        numericUpDownX = new NumericUpDown();
        numericUpDownX.Location = new Point(12, 12);
        // numericUpDownY
        numericUpDownY = new NumericUpDown();
        numericUpDownY.Location = new Point(12, 36);
        // numericUpDownZ
        numericUpDownZ = new NumericUpDown();
        numericUpDownZ.Location = new Point(12, 60);
        // buttonOK
        buttonOK = new Button();
        buttonOK.Text = "OK";
        buttonOK.Location = new Point(12, 84);
        buttonOK.Click += new System.EventHandler(buttonOK_Click);
        // Add controls
        Controls.AddRange(new Control[] { numericUpDownX, numericUpDownY, numericUpDownZ, buttonOK });
        AcceptButton = buttonOK;
    }

    private void buttonOK_Click(object sender, System.EventArgs e)
    {
        OnThreeInts(new ThreeIntsEventArgs((int)numericUpDownX.Value, (int)numericUpDownY.Value, (int)numericUpDownZ.Value));
    }
    protected virtual void OnThreeInts(ThreeIntsEventArgs e)
    {
        ThreeIntsEventHandler eh = ThreeInts;
        if (eh != null)
            eh(this, e);
    }
}

// FormParent.cs
/* Click the Form tho open a new child and subscribe to the event */

using System.Windows.Forms;

public partial class FormParent : Form
{
    public FormParent()
    {
        InitializeComponent();
        Click += new System.EventHandler(FormParent_Click);
    }

    private void FormParent_Click(object sender, System.EventArgs e)
    {
        FormChild formChild = new FormChild();
        // Subscribe
        formChild.ThreeInts += new ThreeIntsEventHandler(formChild_ThreeInts);
        formChild.Show();
    }
    // Handle event
    private void formChild_ThreeInts(object sender, ThreeIntsEventArgs e)
    {
        MessageBox.Show(string.Format("X: {0}, Y: {1}, Z:{2}", e.X, e.Y, e.Z));
    }
}