S
Siv
Hi,
I have an MDI application that uses a generic "ShowPage" routine in a module that is called when I want to display a child form. The basic idea is that in the module I have declared each form as follows:
Friend F0 As frmMain
Friend F1 As frmStart
Friend F2 As frmSearch
Then in my ShowPage routine (which is passed a string "pageToShow" which is the name of the form I wish to open), I first check to see if we already have an instance of the form open:
For Each frm As Form In F0.MdiChildren
If frm.Name = pageToShow Then
frm.BringToFront()
Exit Function
End If
Next
If the form isn't already open the code carries on past the above and opens a new instance of the form:
Select Case pageToShow
Case "frmStart"
F1 = New frmStart
F1.MdiParent = F0
F1.Show()
Case "frmSearch"
F2 = New frmSearch
F2.MdiParent = F0
F2.Show()
F2.Activate()
F2.WindowState = FormWindowState.Maximized
Etc ..
I usually have a button at the bottom of each form that allows the user to close it and return to the start page (this is an MDI child form that is never closed whilst the app is running as it has a series of button that access all the other forms on it.
In the click event of the individual forms I have the following:
Me.Close()
F1.Activate()
(F1 being the Start form).
Now the problem. Up to now I have had no problem with this method of opening and closing forms. Today I added a new form to the set and configured it like all the others. The problem is that when I close this particular form and then re-open another form, its icon stays in the menu bar along with the form just being opened and at the right hand end of the menu bar I am getting multiple sets of min,max/restore,close buttons. The more time I return to the Start Menu and open forms the more of these additional control boxes appear almost filling the bar. Clicking these controls has no effect, or clicking the control menus at the left hand end underneath the form icons doesn't do anything. It's as if these icons and controls are now lost from their form.
Does anyone know why this one form could have caused this behaviour?, I have checked the form and compared all its non-default properties with the ones that don't cause this behaviour and they all have the same settings.
One thing I have also noticed is that when I return to the Start form, the icon is usually the icon from the last form opened not the start form's own icon.
Siv
Martley, Near Worcester, UK.
I have an MDI application that uses a generic "ShowPage" routine in a module that is called when I want to display a child form. The basic idea is that in the module I have declared each form as follows:
Friend F0 As frmMain
Friend F1 As frmStart
Friend F2 As frmSearch
Then in my ShowPage routine (which is passed a string "pageToShow" which is the name of the form I wish to open), I first check to see if we already have an instance of the form open:
For Each frm As Form In F0.MdiChildren
If frm.Name = pageToShow Then
frm.BringToFront()
Exit Function
End If
Next
If the form isn't already open the code carries on past the above and opens a new instance of the form:
Select Case pageToShow
Case "frmStart"
F1 = New frmStart
F1.MdiParent = F0
F1.Show()
Case "frmSearch"
F2 = New frmSearch
F2.MdiParent = F0
F2.Show()
F2.Activate()
F2.WindowState = FormWindowState.Maximized
Etc ..
I usually have a button at the bottom of each form that allows the user to close it and return to the start page (this is an MDI child form that is never closed whilst the app is running as it has a series of button that access all the other forms on it.
In the click event of the individual forms I have the following:
Me.Close()
F1.Activate()
(F1 being the Start form).
Now the problem. Up to now I have had no problem with this method of opening and closing forms. Today I added a new form to the set and configured it like all the others. The problem is that when I close this particular form and then re-open another form, its icon stays in the menu bar along with the form just being opened and at the right hand end of the menu bar I am getting multiple sets of min,max/restore,close buttons. The more time I return to the Start Menu and open forms the more of these additional control boxes appear almost filling the bar. Clicking these controls has no effect, or clicking the control menus at the left hand end underneath the form icons doesn't do anything. It's as if these icons and controls are now lost from their form.
Does anyone know why this one form could have caused this behaviour?, I have checked the form and compared all its non-default properties with the ones that don't cause this behaviour and they all have the same settings.
One thing I have also noticed is that when I return to the Start form, the icon is usually the icon from the last form opened not the start form's own icon.
Siv
Martley, Near Worcester, UK.