I am working on a Windows application, and when I run this application, there are multiple icons appearing on the tray bar:
and when I mouse-over these icons, they disappear.
Does anybody have any idea why this is happening?
protected override void OnClosed(EventArgs e)
{
try
{
notifyIcon1.Visible = false;
notifyIcon1.Icon.Dispose();
notifyIcon1.Dispose();
}
catch(Exception ex)
{
}
base.OnClosed(e);
Environment.Exit(0);
}
Here is how I close my system tray icon to bring up the full application in a program I wrote a while back:
NOTE: this fits well in an event handler in the code behind, hence this.Show() and this.Activate()
NotifyIcon sysTrayIcon = sender as NotifyIcon;
sysTrayIcon.Visible = false;
this.WindowState = WindowState.Normal;
this.Show();
this.Activate();
Related
I am using NotifyIcon to make my form minimize to tray to work at background.
However below code doesn't show app icon at all. Form goes totally invisible. I have to kill that from task manager.
private void Button1_Click(object sender, EventArgs e)
{
this.WindowState = FormWindowState.Minimized;
if (FormWindowState.Minimized == this.WindowState)
{
Hide();
this.ShowInTaskbar = false;
notifyIcon1.Visible = true;
}
}
What could be the reason? I want to see my app-icon to re-open the form.
You need to assign an Icon to NotifyIcon to show it in system tray. Also you need to set Visible to true.
You can set properties using property grid at design time or you can set them by code. For example, you can use such code:
this.notifyIcon1.Icon = this.Icon;
this.notifyIcon1.Visible = true;
If you don't set the Icon or if the visible is not true, it will not show the icon.
OK I am a total newbie at WPF but I have to develop what's in the title with wpf but not relying on MVVM.
I have followed this:
WPF Application that only has a tray icon
I found the first answer the one with the hardcodet lib but find it too difficult and MVVM biased.
So followed the second one and everything seemed fine except that in the end it doesn't work.
So in my App.xaml.cs I have put:
public partial class App : Application
{
private System.Windows.Forms.NotifyIcon notifyIcon = null;
protected override void OnStartup(StartupEventArgs e)
{
base.OnStartup(e);
UnityCore.Initialize();
}
protected override void OnActivated(EventArgs e)
{
notifyIcon = new System.Windows.Forms.NotifyIcon();
notifyIcon.Click += NotifyIcon_Click;
notifyIcon.DoubleClick += NotifyIcon_DoubleClick;
Stream iconStream = Application.GetResourceStream(new Uri("pack://application:,,,/Resources/Images/ITA.png")).Stream;
notifyIcon.Icon = new System.Drawing.Icon(iconStream);
notifyIcon.Visible = true;
base.OnActivated(e);
}
private void NotifyIcon_DoubleClick(object sender, EventArgs e)
{
Console.Beep();//show main window
}
private void NotifyIcon_Click(object sender, EventArgs e)
{
Console.Beep();//show main window
}
}
The main window at start is transparent of minimized to make it invisible.
At this stage I hoped to see the ITA flag in the tray icon and then at click or double click restore the main window.
But I don't see a damn thing in the tray.
I think that the flag resource is properly set here's my solution
Thanx for any help.
I am trying to make my application minimize to task bar/tray
Here is my code so far that I have pulled together from other SO posts and other people seem to have it working but my app minimizes to the tray but when I click it in the tray it doesn't reopen.
private void Form1_Resize(object sender, EventArgs e)
{
if (WindowState == FormWindowState.Minimized)
{
this.notifyIcon1.Visible = true;
this.notifyIcon1.ShowBalloonTip(500);
this.Hide();
}
}
private void notifyIcon1_DoubleClick(object sender, EventArgs e)
{
this.Show();
this.WindowState = FormWindowState.Normal;
}
just to explain again the problem is the application minimizes to the tray but when I click on the icon it doesn't restore the app to normal. Instead it does nothing.
I found my problem.
what I didn't do was this
Set the NotifyIcon's visible property to false in the property editor. Now go to the property editor of Form1, click on the little lightning symbol to access the events, and double click on the Resize event, and change the code to:
and I also didn't do this
Finally we need the code to make the program show up again when the icon is double clicked. So double click on NotifyIcon1 in the designer,
I found this information here
Dreamincode
This is what I have used in the past but I fund a copy online at the link below
if (FormWindowState.Minimized == this.WindowState)
{
notifyIcon1.Visible = true;
notifyIcon1.ShowBalloonTip(500);
this.Hide();
}
found here: http://www.codeproject.com/Articles/27599/Minimize-window-to-system-tray
I have an application that I do not want to show in the taskbar. When the application is minimized it minimizes to the SysTray.
The problem is, when I set ShowInTaskbar = false the minimized application shows above the task bar, just aboe the Windows 7 start button. If I set ShowInTaskbar = true the application minimizes correctly, but obviously the application shows in the taskbar.
Any idea why this is happening and how I can fix it?
EDIT: For the sake of clarity, here is the code I'm using:
private void Form1_Resize(object sender, EventArgs e)
{
if (WindowState == FormWindowState.Minimized) {
this.Hide();
this.Visible = false;
notifyIcon1.Visible = true;
}
else
{
notifyIcon1.Visible = false;
}
}
private void btnDisable_Click(object sender, EventArgs e)
{
// Minimize to the tray
notifyIcon1.Visible = true;
WindowState = FormWindowState.Minimized; // Minimize the form
}
There is no event handler to establish when a form's minimise request has been fired. So to 'get in' before the form has been minimised you'll have to hook into the WndProc procedure
private const int WM_SYSCOMMAND = 0x0112;
private const int SC_MINIMIZE = 0xF020;
[SecurityPermission(SecurityAction.LinkDemand,
Flags = SecurityPermissionFlag.UnmanagedCode)]
protected override void WndProc(ref Message m)
{
switch(m.Msg)
{
case WM_SYSCOMMAND:
int command = m.WParam.ToInt32() & 0xfff0;
if (command == SC_MINIMIZE && this.minimizeToTray)
{
PerformYourOwnOperation(); // For example
}
break;
}
base.WndProc(ref m);
}
and then you can merely hide the form in the PerformYourOwnOperation(); method
public void PerformYourOwnOperation()
{
Form form = GetActiveForm();
form.Hide();
}
You will then need some mechanism to Show() the hidden form otherwise it will be lost.
Another way is using the the form's resize event. However, this fires after the form is minimised. To do this you can do something like
private void Form_Resize(object sender, EventArgs e)
{
if (WindowState == FormWindowState.Minimized)
{
// Do some stuff.
}
}
I hope this helps.
My guess is that you also have to hide the window. To get this behavior in WPF, I have to do the following:
WindowState = WindowState.Minimized;
Visibility = Visibility.Hidden;
ShowInTaskbar = false;
Since WPF and WinForms both ultimately come down to Win32 windows, you probably have to do the same thing.
Here is one of the simplest solutions (I think so):
//Deactivate event handler for your form.
private void Form1_Deactivate(object sender, EventArgs e)
{
if (WindowState == FormWindowState.Minimized) Hide();
}
You can use a NotifyIcon to get the program to show up in the system tray, and watch for the window's resize event to toggle the visibility to hidden.
Here is how to watch for the window's resize event.
How to detect when a windows form is being minimized?
Here is a tutorial for using the NotifyIcon provided by CodeProject. The NotifyIcon is a windows forms element so it will still work in your application.
http://www.codeproject.com/Articles/36468/WPF-NotifyIcon
Add handler for resizing:
private void Form1_Resize(object sender, EventArgs e)
{
Visible = WindowState != FormWindowState.Minimized;
}
I've successfully created an app that minimizes to the tray using a NotifyIcon. When the form is manually closed it is successfully hidden from the desktop, taskbar, and alt-tab. The problem occurs when trying to start with the app minimized. At first the problem was that the app would be minimized but would still appear in the alt-tab dialog. Changing the FormBorderStyle to one of the ToolWindow options (from the "None" option) fixed this, but introduced another problem. When the app first starts the titlebar of the minimized window is visible just above the start menu:
Opening the form and the closing it causes it to hide properly. I've tried lots of variations, but here's essentially how it's working right now...
WindowState is set to Minimized in the Designer. After some initialization in the constructor I have the following lines:
this.Visible = false;
this.ShowInTaskbar = false;
When the NotifyIcon is double-clicked I have the following:
this.WindowState = FormWindowState.Normal;
this.Visible = true;
this.ShowInTaskbar = true;
Like I said, I've tried lots of minor variations on this (this.Hide(), etc.). Is there a way to have the NotifyIcon be the primary component such that I can completely start and dispose of the form while leaving the NotifyIcon running? There's got to be a way to start the app with the form minimized without any of the weirdness. Please help me find it!
The right way to do this is to prevent the form from getting visible in the first place. That requires overriding SetVisibleCore(). Let's assume a context menu for the NotifyIcon with a Show and Exit command. You can implement it like this:
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
notifyIcon1.ContextMenuStrip = contextMenuStrip1;
this.showToolStripMenuItem.Click += showToolStripMenuItem_Click;
this.exitToolStripMenuItem.Click += exitToolStripMenuItem_Click;
}
private bool allowVisible; // ContextMenu's Show command used
private bool allowClose; // ContextMenu's Exit command used
protected override void SetVisibleCore(bool value) {
if (!allowVisible) {
value = false;
if (!this.IsHandleCreated) CreateHandle();
}
base.SetVisibleCore(value);
}
protected override void OnFormClosing(FormClosingEventArgs e) {
if (!allowClose) {
this.Hide();
e.Cancel = true;
}
base.OnFormClosing(e);
}
private void showToolStripMenuItem_Click(object sender, EventArgs e) {
allowVisible = true;
Show();
}
private void exitToolStripMenuItem_Click(object sender, EventArgs e) {
allowClose = true;
Application.Exit();
}
}
Note a wrinkle with the Load event, it won't fire until the main form is first shown. So be sure to do initialization in the form's constructor, not the Load event handler.
I'm reading all the answers and see hacks and black magic... (no offense, mates)
No hacks needed. You don't even have to set "ShowInTaskbar=false" and other stuff. Just do this:
//"Form Shown" event handler
private void Form_Shown(object sender, EventArgs e)
{
//to minimize window
this.WindowState = FormWindowState.Minimized;
//to hide from taskbar
this.Hide();
}
NOTE: I strongly recommend NOT TOUCHING the "ShowInTaskbar" property. For example, if your application registers system-wide hotkeys or other similar stuff (hooks, etc) - setting ShowInTaskBar=false and minimizing your app will prevent Windows from sending some messages to your window... And your hooks/hotkeys/etc will stop working.
In the constructor, remove these two lines:
this.Visible = false;
this.ShowInTaskbar = false;
and add after InitializeComponent();:
this.WindowState = FormWindowState.Minimized;
In designer, set ShowInTaskbar to false & FormWindowState to Normal.
EDIT:
If you post the same in Load event, the window does get minimized but still shows minimized on the desktop. I think this is a bug.
When minimizing an application and you want to hide it from Alt+Tab:
You also need to set the Opacity to stop the titlebar showing near the Start Menu when you set the Border Style to a Tool Window.
On Minimize Event:
this.Visible = false;
this.Opacity = 0;
this.FormBorderStyle = FormBorderStyle.FixedToolWindow;
this.ShowInTaskbar = false;
On Normalize Event:
this.Visible = true;
this.Opacity = 100;
this.FormBorderStyle = FormBorderStyle.FixedSingle; //or whatever it was previously set to
this.ShowInTaskbar = true;
Move the following code from the Form's constructor to Form_Main_Load(). With the same setup on Notification_Icon when Form_Resize().
// Hide the Form to System Tray
this.WindowState = FormWindowState.Minimized;
This "quick and dirty fix" worked for me:
$form1.FormBorderStyle = "fixedtoolwindow"
$form1.top = -1000000
$form1.Left = -1000000
$form1.Width = 10
$form1.Height = 10
$form1.WindowState = "normal"
$form1.ShowInTaskbar = $False
$form1.Opacity = 0
$form1.Hide()
Hope it helps someone else...