I have a small requirement and that is as follows:
I have a login form and after a successful login, i open another MDI form, but i want to close the login form. I have given the code as:
MDIForm1.show
Me.Close
This does not seem to work.
Can anyone help on this.
Similarly, is is possible to open the login form on an inactive MDI form [MDI and Login for to be seen] and when th user login details are correct, it must close the login form and return to the MDI Form.
Please help on this.
Regards,
George
Firstly, I'm guessing you've set your login form as the application's startup form? If so then VB has put something like this together for you behind the scenes:
Application.EnableVisualStyles()
Application.SetCompatibleTextRenderingDefault(False)
Application.Run(New LoginForm)
The magic happens there in that Application.Run call, which basically creates a message loop for your GUI and terminates when it detects that your form has been closed.
There are a couple of ways that I know of to deal with this.
First: don't make the login form your startup form at all. Create your main form, but cause it to hide itself and ShowDialog on an instance of your login form before appearing.
Make your login form your startup object, but instead of closing it when you open your main form, simply hide it (this is actually pretty horrendous to me personally, but it's a possibility).
As for the MDI form question: this seems completely possible to me, if I understand you correctly. You want to show both the login form and the MDI form at once, but you want the MDI form to be disabled until the login form is closed, right?
So just make the MDI form your application's startup form, have it call ShowDialog on your login form in its Load event, and bingo: the MDI form will effectively be "locked" until the login form is dealt with (this is how modal dialogs in general such as MessageBox work). This is actually the same as option #1 above except that the main form (your MDI form) is never hidden, only blocked.
Other ways:
Dim <form name> As New <form name>
<form name>.Show()
Me.Hide()
Related
I have a login form which I need to close without the entire application being terminated. I tried using Me.Close() , Me.Hide() as well. The login form is used as the main form as well.
I hope this makes sense....
It sounds like you have a VB.Net project and your Login form is your 'startup form'. When you close that form, your application thinks it is over; but you really want to take action after the Login form is closed.
If you bring up the Properties window for the project, on the Applications Tab you can set the 'Shutdown mode'. The default is when the 'Startup Form Closes'. Change it to 'When the last form closes'.
You can also add Application level events here.
http://msdn.microsoft.com/en-us/library/f2bys999(v=vs.80).aspx
If you stick with the way you are going; your Login form is going to have to create another form before it closes or your app will close. You can do that; but it's probably cleaner to move the login logic into the Application Startup Event (see link for more details).
In the startup event you can show the Login screen, get the result, decide if you want to show the main form for your application, etc, etc...
This depends on where you are trying to close or hide the form. If you are trying to close or hide the form from within the the form itself then Me.Close() and Me.Hide() does the job. If you are attempting to close or hide a form from another form like your main form then you must refer to the form instance example:
frmAbout.Close()
frmAbout.Hide()
I hope this helps.
I have a form that opens a modal pop up helper form to collect some data. When this modal pop up form closes, focus returns to the main form. I would like to trigger some activity when focus comes back to my main form.
The event model for the form does not trigger the Form_Activate or Form_GotFocus events when returning from a model popup as per Microsoft documentation.
These forms and all controls are completely unbound.
Is there a trick to knowing in code when focus returns to my form?
If both forms are placed in normal mode, Form_Activate does fire in the primary form when the helper form closes, but this does not meet my needs. I have not been able to find a similar event to trap this. I'm hoping someone has a workaround.
For clarity, the issue I ran into was I had the design time properties in the helper form set to act as a dialog - (pop up and modal as true). When I opened the form responding to the button click event on the main form, I did NOT include the acDialog option.
If you omit the WindowMode=acDialog setting the code operates asynchronously completing the code in the click event handler in full, NOT halting and waiting.
The acDialog option apparently forces the DoCmd.OpenForm command to run synchronously, halting code execution, then returning once the modal form has been closed.
Private Sub btnHelper_Click()
DoCmd.OpenForm "frmHelper", WindowMode:=acDialog
'Do stuff after frmHelper closes
End Sub
I'm working on my project in VB. Can anyone help me how to disable my main(not close) form when I open my login form?
Like when I click on the login button the login form will appear and the main form will just stay in background and it cannot be closed or moved unless the login form will be closed?
Look into the subject of a "modal" dialog box. You can instantiate one as follows:
Dim frmLogin as New Form()
' Display frmLogin as a modal dialog
frmLogin.ShowDialog()
This means that this form will have to be handled by the user before any other forms can be used.
I've got (what I believe to be) a weird issue with closing a form and opening another.
I have a button on a particular form (that is opened using the .ShowDialog if that makes any difference), when the button is clicked, the following code runs:
Me.Close()
LC.ShowDialog()
I would expect that the form containing the button should close and the LC form should open as a dialog form. What actually happens is that the Me form stays open and the LC form appears behind it with main focus.
Why would this be?
UPDATE 1
Just to clarify the set up of the forms:
Form1 opens the me form as a Dialog (Where Form1 is the main form that is launched on startup)
The me form opens the LC form and should close in the process
Ok it seems you might have a conception issue...
Let's get this through, if you call me.close(), you are asking your form to terminate itself, and to kill all forms he generated.
However, it is not direct, a windows Message is posted to your application that will be treated whenever you function is done.
Then right after that, you create a new form and you say you want to wait for it to close to continue.
I don't know what your purpose is but you have a few solutions :
If you want to go back to your main form (Form1) when done with LC :
Me.Hide()
LC.ShowDialog()
=>Your code will pick up here when LC will be closed
Me.Show()
If you don't want your Form1 to open ever again, then don't make it your starting form, or start working in the Sub Main()
make the form1 a flowmanager of the forms. I mean, form1 should opens the lc and close the me.
You must call both Dialog Forms from a parent form.
You may do something like this:
PARENT FORM
FirstDialog.Showdialog
(the app will open this dialog and wait it close)
SecondDialog.Showdialog
Doing this way the second dialog will open ONLY when the first one be closed.
You cannot start another dialog from a dialog being closed.
Good luck
I'm using VB.NET (VS2008) and have a form (frmMain) that calls another form (frmCleanUp) but when frmCleanUp shows it can be hidden behind frmMain.
What I'd like to have is the new form be locked and have to close to get rid of it?
Thanks..
Show the Form with .ShowDialog() instead of .Show().
This way, the form is shown as modal dialog box and will stay on top until you close it.
when you show the form, do it with ShowDialog
in frmMain do:
frmCleanUp.ShowDialog