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Text longer than textbox

Posted on 2003-10-29
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Last Modified: 2010-05-03
How do I figure out if the text inside a textbox is longer than the textbox (all the text cannot be displayed)?
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Question by:PLavelle
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by:Dang123
Dang123 earned 150 total points
ID: 9643161
This should get you off to a good start

http://www.vb-helper.com/howto_size_textbox.html
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TimCottee earned 350 total points
ID: 9643168
Hi PLavelle,

You can use the following method to achieve this.

Private Sub TestLength(ByRef TBox As TextBox)
    With TBox
        If Me.TextWidth(TBox.Text) > TBox.Width - 100 Then
            MsgBox "Uh oh"
        End If
    End With
End Sub

Shows how

Tim Cottee MCSD, MCDBA, CPIM
Brainbench MVP for Visual Basic
http://www.brainbench.com
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Expert Comment

by:Richie_Simonetti
ID: 9643946
hearing...
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Expert Comment

by:Richie_Simonetti
ID: 9643970
You could know in advance how many lines would be displayed in advance, doesn't it?
Then, just knowing how many lines has after the text box is populated and comparing with that data, you should know if text is completelt displayed or not.
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Expert Comment

by:Richie_Simonetti
ID: 9643989
Const WM_USER = 1024
Const EM_GETLINECOUNT = WM_USER + 10
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Integer, ByVal lParam As Any) As Long


TotalLines = SendMessage(Text1.hWnd, EM_GETLINECOUNT, 0, 0&)
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by:Dang123
ID: 9644001
Richie_Simonetti,
 Different fonts take differing amount of room for the same letters. The link I posted above uses TextWidth and TextHeight to take this into account.

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by:Richie_Simonetti
ID: 9644059
You are right but you know that when design the app and set the properties, isn't it?
Simply doing a test, you would know how many lines textbox would displays.
If font size is 24, maybe you will see only one line, if font size is 12 you would see 2 lines and so on, so it is easy to test it.
TextWidth and TextHeight would be usefull when you know nothing about YOUR textbox target but this is not the case.
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Author Comment

by:PLavelle
ID: 9644481
Thank you.
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by:Richie_Simonetti
ID: 9644533
wow! Besides VB, i have to learn to read minds!!!
:)))))))
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