D
Derrick
I've been working on an application which has a NotifyIcon (system tray
icon), and a corresponding ContextMenu. I want to be able to update this
menu dynamically. However, when I make changes to the menu, it seems to
disappear. This only breaks when the context menu is tied to a NotifyIcon -
not to any other control.
Below is a C# file for a form which should illustrate this (at least it does
on my machine!). The same contextmenu is tied to the NotifyIcon and the
button on the form. Same function is used to update the menu. Note - you
will need an icon included in the project as an Embedded Resource (I called
mine "testIcon.ico").
Anyone have any idea how I can get the menu to behave when tied to the
NotifyIcon?
Thanks,
Derrick
---Form1.cs (sorry for lack of formatting)---
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace WindowsApplication1
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Button button1;
private System.Windows.Forms.ContextMenu contextMenu1;
private System.Windows.Forms.MenuItem menuItem1;
private System.Windows.Forms.MenuItem menuItem2;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
private NotifyIcon myTrayIcon;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
myTrayIcon = new NotifyIcon();
myTrayIcon.Visible = true;
myTrayIcon.Text = "Cathexis Web Uploader";
myTrayIcon.ContextMenu = this.contextMenu1;
myTrayIcon.Icon = new
Icon(System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceSt
ream("WindowsApplication1.testIcon.ico"));
LoadMenuItems("");
}
private void LoadMenuItems(string selectedItemText)
{
this.menuItem1.MenuItems.Clear();
MenuItem miSelected;
//Create the currently selected item
if(selectedItemText == "")
{
miSelected = new MenuItem("(none)");
}
else
{
miSelected = new MenuItem(selectedItemText); //don't need event handler for
this one
miSelected.Checked = true;
}
menuItem1.MenuItems.Add(miSelected);
//Add a seperator
menuItem1.MenuItems.Add(new MenuItem("-"));
//Add the History items
//This would actually come from a seperate class
string[] historyList = GetHistoryItems();
foreach(string s in historyList)
{
if(selectedItemText != s) //weed out duplicates
menuItem1.MenuItems.Add(new MenuItem(s, new
EventHandler(SubMenuItem_Click)));
}
}
private void SubMenuItem_Click(object sender, EventArgs e)
{
MenuItem mi = (MenuItem)sender;
LoadMenuItems(mi.Text);
}
private string[] GetHistoryItems()
{
return new string[]{"History1", "History2", "History3"};
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.contextMenu1 = new System.Windows.Forms.ContextMenu();
this.menuItem1 = new System.Windows.Forms.MenuItem();
this.menuItem2 = new System.Windows.Forms.MenuItem();
this.SuspendLayout();
//
// button1
//
this.button1.ContextMenu = this.contextMenu1;
this.button1.Location = new System.Drawing.Point(104, 112);
this.button1.Name = "button1";
this.button1.TabIndex = 0;
this.button1.Text = "button1";
//
// contextMenu1
//
this.contextMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.menuItem1,
this.menuItem2});
//
// menuItem1
//
this.menuItem1.Index = 0;
this.menuItem1.Text = "Test1";
//
// menuItem2
//
this.menuItem2.Index = 1;
this.menuItem2.Text = "Test2";
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Controls.Add(this.button1);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
}
}
---END OF FORM1.cs --
icon), and a corresponding ContextMenu. I want to be able to update this
menu dynamically. However, when I make changes to the menu, it seems to
disappear. This only breaks when the context menu is tied to a NotifyIcon -
not to any other control.
Below is a C# file for a form which should illustrate this (at least it does
on my machine!). The same contextmenu is tied to the NotifyIcon and the
button on the form. Same function is used to update the menu. Note - you
will need an icon included in the project as an Embedded Resource (I called
mine "testIcon.ico").
Anyone have any idea how I can get the menu to behave when tied to the
NotifyIcon?
Thanks,
Derrick
---Form1.cs (sorry for lack of formatting)---
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace WindowsApplication1
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Button button1;
private System.Windows.Forms.ContextMenu contextMenu1;
private System.Windows.Forms.MenuItem menuItem1;
private System.Windows.Forms.MenuItem menuItem2;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
private NotifyIcon myTrayIcon;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
myTrayIcon = new NotifyIcon();
myTrayIcon.Visible = true;
myTrayIcon.Text = "Cathexis Web Uploader";
myTrayIcon.ContextMenu = this.contextMenu1;
myTrayIcon.Icon = new
Icon(System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceSt
ream("WindowsApplication1.testIcon.ico"));
LoadMenuItems("");
}
private void LoadMenuItems(string selectedItemText)
{
this.menuItem1.MenuItems.Clear();
MenuItem miSelected;
//Create the currently selected item
if(selectedItemText == "")
{
miSelected = new MenuItem("(none)");
}
else
{
miSelected = new MenuItem(selectedItemText); //don't need event handler for
this one
miSelected.Checked = true;
}
menuItem1.MenuItems.Add(miSelected);
//Add a seperator
menuItem1.MenuItems.Add(new MenuItem("-"));
//Add the History items
//This would actually come from a seperate class
string[] historyList = GetHistoryItems();
foreach(string s in historyList)
{
if(selectedItemText != s) //weed out duplicates
menuItem1.MenuItems.Add(new MenuItem(s, new
EventHandler(SubMenuItem_Click)));
}
}
private void SubMenuItem_Click(object sender, EventArgs e)
{
MenuItem mi = (MenuItem)sender;
LoadMenuItems(mi.Text);
}
private string[] GetHistoryItems()
{
return new string[]{"History1", "History2", "History3"};
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.contextMenu1 = new System.Windows.Forms.ContextMenu();
this.menuItem1 = new System.Windows.Forms.MenuItem();
this.menuItem2 = new System.Windows.Forms.MenuItem();
this.SuspendLayout();
//
// button1
//
this.button1.ContextMenu = this.contextMenu1;
this.button1.Location = new System.Drawing.Point(104, 112);
this.button1.Name = "button1";
this.button1.TabIndex = 0;
this.button1.Text = "button1";
//
// contextMenu1
//
this.contextMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.menuItem1,
this.menuItem2});
//
// menuItem1
//
this.menuItem1.Index = 0;
this.menuItem1.Text = "Test1";
//
// menuItem2
//
this.menuItem2.Index = 1;
this.menuItem2.Text = "Test2";
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Controls.Add(this.button1);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
}
}
---END OF FORM1.cs --