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Requesting Focus to a Text Box

Posted on 1998-07-29
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Last Modified: 2011-10-03
I have a main splash screen with a timer (frmSplash) that opens a form called frmLogin.  In the frmLogin Load() method, I call txtUserName.setFocus, but I get an error message.


Private Sub Form_Load()
    txtUserName.SetFocus
End Sub


My error is:

Runtime error '5'

Invalid procedure call or argument
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Question by:kpetti
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6 Comments
 
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Dalin earned 20 total points
ID: 1467161
kpetti,
put the code in form_activate instead of form_load.
Regards
Dalin
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Author Comment

by:kpetti
ID: 1467162
It is really strang, but when I took the code:

Private Sub Form_Load()
    txtUserName.SetFocus
End Sub

out of my form, it worked fine.  I must not have like the above code for some reason or another.  I think that it may be becuase it was having a conflict with the tab index = 0 on that textfield.

Kev
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Expert Comment

by:Dalin
ID: 1467163
Well, Form_load is when it "Load everything in the form. So your textbox may not be there yet...
form_activate is the event after form_load, so everything is there now...
All these happens before you see them.

The other way of seting focus for a control is to set its tabIndex property to 0.

Regards
Dalin
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LVL 39

Expert Comment

by:abel
ID: 1467164
Kev,
You are only getting that error because your form doesn't show yet when inside the form_load event. To explain you when and why you can use setfocus, this is how your form gets created (from first to last event):
form_initialize
form_load
form_resize
form_activate
form_paint

Mostly people use form_initialize, form_load and form_activate for all kinds of initialization. form_load also occurs when you refer to any object to it before it's displayed (like text1.text="hello" also calls form_load).
Although you can use SetFocus from the form_resize event, it's better to use it, like Dalin says, from form_activate (that's what it should be used for)

Another solution (many people use it, but it's not so beautiful): put me.show before you use SetFocus, like:
Private Sub Form_Load()
    Me.Show
    txtUserName.SetFocus
End Sub

This all has nothing to do with the tabstop or tabindex properties.

Regards, Abel
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LVL 39

Expert Comment

by:abel
ID: 1467165
Sorry Dalin, I was typing when you already posted... :-)
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LVL 9

Expert Comment

by:Dalin
ID: 1467166
Thanks, abel, for the complete explination. I am sure Kev benifited from that.
Regards
Dalin
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