Need a control like a textbox which holds more data 1

[CaKiwi]

I want to load a file into a window and allow the user to do simple editing on it. A text box would be ideal for this except that it will not hold enough data. Is there another control which I could use to acomplish this?

Thanks in advance. CaKiwi

 

[vb5prgrmr]

Try the RichTextBox.

 

[johnwm]

Is that quite a big text file?

I quote from VBHelp:
Text entered into the TextBox control is contained in the Text property. You can enter up to 2,048 characters in a text box. If you set the MultiLine property of the control to True, you can enter up to 32 KB of text Let me know if this helps
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'There are 10 kinds of people in the world: those who understand binary, and those who don't.'

 

[instar4per]

johnwm, although I'd rather not nit-pick, I'm going to here. Typically, I've found the limits to be true, unless running on Win2000/XP (haven't tried NT). Then, it seems, the textbox is limitless?

*shrug* -iNSTA
aim: instar4per
email: instar4per @ hotmail.com

 

[johnwm]

instar4per

Thanks for your comment. I must admit I haven't personally used a textbox for long strings. As I said originally 'I quote from VBHelp' Let me know if this helps
________________________________________________________________
If you want to get the best response to a question, please check out FAQ222-2244 first

'There are 10 kinds of people in the world: those who understand binary, and those who don't.'

 

[CaKiwi]

vb5prgrmr - Thanks for the suggestion, I will try a richtextbox and post the results. Failing that, I will shell notepad, passing the filename. At present I am using a listbox to display the data.

johnwm - The file will usually be 50-100kb but could be up to 1mb. I saw that the documented maximum for a textbox was 32kb but I have loaded more than 40kb into one. CaKiwi

 

[strongm]

The textboxes can accept large amounts of text ok (64K for a multiline textbox in W95/98/Me, and - theoretically - 4Gb under NT/2000/XP; in both cases the size is less, 32K and 2Gb respectively, for a single line textbox). The problem is that VB doesn't know how to access it properly, as it has some artificial restraints. Try the following (this example is for NT/2000/XP, since the numbers I use exceed the 64K W95/98/Me limit.). You just need a form with a textbox (I suggest set to single line as it's faster...) and a command button:
[tt]
Option Explicit

Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Const WM_SETTEXT = &HC



Private Sub Command1_Click()


' The VB way
fred = String(128000, "a&quot
Text1.Text = fred
MsgBox "VB can see " & Len(Text1.Text) & " bytes"

' The API way
SendMessage Text1.hwnd, WM_SETTEXT, 0&, ByVal fred

MsgBox "VB can now see " & Len(Text1.Text) & " bytes"
' But, for example, you can't set SelStart to any larger than 65535

End Sub

 

[CaKiwi]

strongm - Thanks for your suggestion, I will try it and post the results. I am developing on windows 98 so the data from the file will exceed the 64kb limit there but the final application will run on windows NT. CaKiwi

 

[dragnut]

CaKiwi, If you decide to go the notepad route, notepad only accepts up to about 10k if I'm not mistaken.

 

[CaKiwi]

dragnut - Right, I'll use wordpad if all else fails. CaKiwi

 

[CaKiwi]

vb5prgrmr - The RichTextBox worked fine. I loaded a 1.5mb file into it without any problems. Thanks for your suggestion. CaKiwi