Notify Icon and Minimise Hide/Show Problems

[ziycon]

I have this code and when i minimise the application should disappear from the taskbar and only be visible in the tray and when i double click on the tray icon it show maximise the app. but neither functions are working, i can display the notifyicon in the tray fine, thats it!??

private void Form_Resize(object sender, System.EventArgs e)
{
   if (FormWindowState.Minimized == WindowState)
         this.ShowInTaskbar = false;
   if (FormWindowState.Maximized == WindowState)
         this.ShowInTaskbar = true;
}
private void notifyIconMain_DoubleClick(object sender, System.EventArgs e)
{
   Show();
   WindowState = FormWindowState.Normal;
}

Also can anyone tell me how to override the 'X' to minimise the app. and not exit it?

[Plater]

All you are doing is changing the show in taskbar property. You shouldn't have to change that at all.

Use the .Visible property instead.

private void Form_Resize(object sender, System.EventArgs e)
{
   if (WindowState == FormWindowState.Minimized )
   {
         this.Visible=false;
   }
}
private void notifyIconMain_DoubleClick(object sender, System.EventArgs e)
{
   this.Visible=true;
   WindowState = FormWindowState.Normal;
}
 

[balabaster]

To stop the form closing you catch it in the form's FormClosing event...

e.Cancel = True

[Curtis Rutland]

To your second question:

You will need to handle the FormClosing Event. Use conditions to determine whether you want to close the form or not. If you do, do nothing. Otherwise, change e.Cancel to true.

Here's an example of a FormClosing event handler

private void BBCodeTextEditor_FormClosing(object sender, FormClosingEventArgs e)
{
    //if windows is shutting down, or the user ends task from the task manager, don't ask questions
    if (e.CloseReason != CloseReason.WindowsShutDown && e.CloseReason != CloseReason.TaskManagerClosing)
    {
        //if my dialog is OK, then close
        if (this.DialogResult == DialogResult.OK)
        {
            e.Cancel = false;
            return;
        }
        //otherwise, if my cancelled flag is set, close
        if (this.cancelled)
        {
            e.Cancel = false;
            return;
        }
        //otherwise, if my text isn't dirty, close
        if (this.EditorText.Equals(this.originalText))
        {
            e.Cancel = false;
            return;
        }
        //if we got here, then we aren't sure if we want to close or not
        else
        {
            string message = Properties.Resources.sCloseFormMessage;
            string caption = Properties.Resources.sCloseFormCaption;
            //show a dialog to ask the user
            DialogResult res = MessageBox.Show(message, caption, MessageBoxButtons.YesNo, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2);
            if (res == DialogResult.No)
                //user does not want to close, cancel closing
                e.Cancel = true;
            else
                //user confirmed closing, continue
                e.Cancel = false;
        }
    }
}
 

You can see how you use conditions to determine if you want to close or not, and how to prevent closing. I would suggest you use that first line, you don't want your app holding up Windows shutting down.

[ziycon]

This is the code i have now and none of it works, any i doing something wrong??

private void Form_Resize(object sender, System.EventArgs e)
{
     if (WindowState == FormWindowState.Minimized)
     {
         this.Visible = false;
     }
}
private void notifyIconMain_DoubleClick(object sender, System.EventArgs e)
{
    this.Visible = true;
    WindowState = FormWindowState.Normal;
}
private void Form_FormClosing(object sender, FormClosingEventArgs e)
{
    e.Cancel = true;
    this.WindowState = FormWindowState.Minimized;
}

[Curtis Rutland]

Are you sure that you have registered the event handlers?

Also, as I said in an earlier post, if you don't check to see if the close reason is windows shutdown, you can cause problems.

[ziycon]

I don't know how to set Event handlers so thats a no!?

[Curtis Rutland]

I don't know how to set Event handlers so thats a no!?

OK, make sure that your Form is selected in the designer window. Look in the properties menu, and click the lightning bolt. You should see something like this:

Now, find the events you want to handle, and click the dropdown, and choose the correct method.

That should work.

[ziycon]

Genius, working now, only thing that i can't get to work is when you click on the tray icon the form wont show again, what event do i use for that 'click' mouseclick' etc??

[Curtis Rutland]

Well, you have to select your NotifyIcon object and do the same thing. Check out the screenshot:

You can see that I have my notify icon selected, and that the properties window shows the events for it, instead of the form.

[ziycon]

I understand you now, got all that work, last thing about his i promise.

I have this, how do i say that when the icon in the tray is clicked that the frmMain that was made this.Visible = false on minimise is shown again instead of creating a new form as i can see how the this.Visible = true would apply to the hiden form!?

 private void frmMain_Resize(object sender, EventArgs e)
{
    if (WindowState == FormWindowState.Minimized)
    {
         this.Visible = false;
    }
}
private void notifyIconMain_Click(object sender, EventArgs e)
{
     this.Visible = true;
     WindowState = FormWindowState.Normal;
}

[Plater]

That should be correct as is, assuming that the handler functions are located withen the form's class structure. (That is the default behavior when using visual studio to attach event handlers, as insert's instructions showed)

[Curtis Rutland]

Sorry, I don't quite understand your question. Can you please phrase it a bit more clearly?

[ziycon]

When i click the minimise button on Form A it will make Form A 'invisible' and when i click on the icon in the Tray it will make Form A visible again, does the this.Visible = true; effect the notiyIcon or the Form A when i click on the icon in the Tray?
Its not making the Form A visible when i click the icon in the Tray with the below code:

private void notifyIconMain_Click(object sender, EventArgs e)
{
    this.Visible = true;
    WindowState = FormWindowState.Normal;
}

I have mouseClick and mouseDoubleClick of the notifyIcon set to the above function!??

[ziycon]

Got it sorted, thanks!

[Curtis Rutland]

Well, I'm not sure what's wrong with that code...
I like to do it the way you first suggested. Using this.ShowInTaskbar.

Here's what my methods for this look like:

private void BDAMainForm_Resize(object sender, EventArgs e)
{
    if (this.WindowState == FormWindowState.Minimized)
        this.ShowInTaskbar = false;
    else
        this.ShowInTaskbar = true;
}
 
//notify icon click event handler
private void niBda_MouseClick(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Left)
        this.WindowState = FormWindowState.Normal;
}

The one difference I see is that you use an EventArgs instead of MouseEventArgs, but that shouldn't matter.

[ziycon]

private void BBCodeTextEditor_FormClosing(object sender, FormClosingEventArgs e)
{
    //if windows is shutting down, or the user ends task from the task manager, don't ask questions
    if (e.CloseReason != CloseReason.WindowsShutDown && e.CloseReason != CloseReason.TaskManagerClosing)
    {
        //if my dialog is OK, then close
        if (this.DialogResult == DialogResult.OK)
        {
            e.Cancel = false;
            return;
        }
        //otherwise, if my cancelled flag is set, close
        if (this.cancelled)
        {
            e.Cancel = false;
            return;
        }
        //otherwise, if my text isn't dirty, close
        if (this.EditorText.Equals(this.originalText))
        {
            e.Cancel = false;
            return;
        }
        //if we got here, then we aren't sure if we want to close or not
        else
        {
            string message = Properties.Resources.sCloseFormMessage;
            string caption = Properties.Resources.sCloseFormCaption;
            //show a dialog to ask the user
            DialogResult res = MessageBox.Show(message, caption, MessageBoxButtons.YesNo, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2);
            if (res == DialogResult.No)
                //user does not want to close, cancel closing
                e.Cancel = true;
            else
                //user confirmed closing, continue
                e.Cancel = false;
        }
    }
}

this.cancelled
this.EditorText
Can you explain what these variables mean? They throw errors and can't figure out where there coming from!?

[Curtis Rutland]

That was just an example from a project I'd been working on. Not meant to be a copy+paste solution, just an example of a real-life application. Those are members of my form.

[ziycon]

I understand, thanks, I'll work it out myself then, appreciate all your help. Thanks again.

[ziycon]

Should this not work? When a user clicks on 'X' is that not considered CloseReason.UserClosing?

private void Form_Closing(object sender, FormClosingEventArgs e)
{
    if (e.CloseReason != CloseReason.WindowsShutDown && e.CloseReason != CloseReason.TaskManagerClosing)
    {
        if (this.DialogResult == DialogResult.OK)
        {
            e.Cancel = false;
            return;
        }
        if ((e.CloseReason == CloseReason.ApplicationExitCall) || (e.CloseReason == CloseReason.UserClosing))
        {
            this.Visible = true;
            WindowState = FormWindowState.Normal;
        }
    }
}

[Curtis Rutland]

Are you actually setting this.DialogResult somewhere?

I feel like I may have lead you down the wrong path by giving you that sample...