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RichTextBox Control

Last post was 24 Apr 2008 at 15:39
Tags: .net United Kingdom
This is a comment thread discussing RichTextBox Control
  • 10 years ago

    This thread is for discussions of RichTextBox Control.

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  • 6 years ago

    After using this code the undo level is still 1.


    Can someone help me out ?


    Thank you !

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  • 6 years ago

    i expirienced the same thing... does anyone have a working example on this?

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  • 6 years ago

    What o/s are you running? on Windows 2000/XP, the richtext box has been "upgraded" to include multiple undo/redo.. otherwise, you'll probably be left with the old single undo/redo..


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  • 6 years ago

    but still  can only undo level 1,why?can u tell me?thank you very much.

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  • 6 years ago

    VB.net has introduced a number of changes to the way you access the RichTextBox's properties. SelUnderline, SelBold, SelStrikethrough etc are now available in the


    richTextBox1.SelectionFont


    property. For example, in VB.net, use


    richTextBox1.SelectionFont.Underline


    instead of


    richTextBox1.SelUnderline


    I will try to update the tutorial to be .net compliant in the next month or so.

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  • 6 years ago

    Hi,


    Can u please tell me, how to do this in VB.NET or C#. I need it urgently.


    Thanx
    Ashok

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  • 6 years ago

    RichTextBOx1.SelectionFont.Bold
    RichTextBOx1.SelectionFont.Underline etc are readonly


    How to set the formating for the selected text???

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  • 6 years ago


    How do you autodetect URL's in VB? Not .net!

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  • 5 years ago

    Is it possible to highlight a word in a "rich text box" and add a link to that word?


    For example in Microsoft Word you can highlight a word, click "insert" on the tool bar, select Hyperlink and add an url address to that word. This word can then be clicked on to go to that web page.


    Is this possible in RTB?


    Thanks
    Chris
    cgroves@lycos.co.uk

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  • 5 years ago

    I believe the problem for VB'ers is that the RichText control is from richtx32.ocx, which is based on riched32.dll.  As per Microsoft ( http://msdn.microsoft.com/library/en-us/shellcc/platform/commctls/richedit/richeditcontrols/aboutricheditcontrols.asp ) this library only supports one level of undo.  Later versions of riched (riched20.dll, etc.) allow for multiple levels, but I have found no Microsoft ocx that uses this library.


    Bottom line, not going to happen using ONLY Richtext control, even with the correct messages sent to it.


    As a side note, I found a few logic errors in above code...


    1)
      Public Property Get CanCopy() As Boolean
          If rtb1.SelLength < 0 Then
             CanCopy = True
          End If
      End Property


    Should read as


      Public Property Get CanCopy() As Boolean
         If rtb1.SelLength > 0 Then
            CanCopy = True
         End If
      End Property


    2)  
    With richtx32.ocx, the above code will display the undo all the time.  This is confusing during runtime.  Really we only want it to show if there is no redo.  This requires one of any number of possible revisions.  Generate your favorite.



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  • 5 years ago

    I believe the problem for VB'ers is that the RichText control is from richtx32.ocx, which is based on riched32.dll.  As per Microsoft ( http://msdn.microsoft.com/library/en-us/shellcc/platform/commctls/richedit/richeditcontrols/aboutricheditcontrols.asp ) this library only supports one level of undo.  Later versions of riched (riched20.dll, etc.) allow for multiple levels, but I have found no Microsoft ocx that uses this library.


    Bottom line, not going to happen using ONLY Richtext control, even with the correct messages sent to it.


    As a side note, I found a few logic errors in above code...


    1)
      Public Property Get CanCopy() As Boolean
          If rtb1.SelLength < 0 Then
             CanCopy = True
          End If
      End Property


    Should read as


      Public Property Get CanCopy() As Boolean
         If rtb1.SelLength > 0 Then
            CanCopy = True
         End If
      End Property


    2)  
    With richtx32.ocx, the above code will display the undo all the time.  This is confusing during runtime.  Really we only want it to show if there is no redo.  This requires one of any number of possible revisions.  Generate your favorite.



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  • 4 years ago


    how can  inert image into richtextbox ?

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  • 4 years ago

    I'm using VB6 - sp5 - -
    This code absolutely does not work with my system..... I've been told that it's because the RichTextBox that comes with VB is an older version of the dll -----


    Can I get it to work by replacing the RichEd dll?
    If so, where can I get it?

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  • 4 years ago

    I am writing code for a connection routine and am using a rich text box to display the responses from the server.  However as the text is added the user is constantly haveing to manually scroll the window to see the new text.  I would like the program to automaically scroll the window for the user.  Any help on this would be appreciated.  thanks

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  • 4 years ago

    hi
    i also want the same thong for my application


    if u find any answer how to do this plz let me know


    thanks in anticapation


    mtikoo

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  • 4 years ago

    hi
    we used pre printed paper for printing.  so i want spilt the contents of RTF text and print it on multiple page on particular start line and end line


    pls help me


    ebi

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  • 4 years ago

    hi


    how can i call another form from the current MDI child form


    ebi

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  • 4 years ago

    i am very like this code. it prints all the text.  but how can extract some line from rtf.
    for e.g.  print 26 lines each from the rtf text.

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  • 4 years ago

    How can I format text that I'm adding to the box? IE, the program prints a string into the box, and I want to change the colour of some of the text in the string. Also how can I find the cursor's position and the character it's in front of?

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  • 3 years ago

    I think its to late to answer but, maybe someone uses it , huh?



    You can use UpTo method.



    Richtextbox1.UpTo strSTRING


    it search text and goes there if there is strSTRING in richtextbox1 text. if there is no text it goes to the end.


    You must enable Vertical Scroll Bar , and then samply use


    Richtextbox1.UpTo "§"



    Note: "§"=CHR(245), i use it because , i know there is no "§" in my richtextbox control, you can use something like that who wouldnt write it to the richtextbox.



    Sorry for my english


    Keep in Peace...



    EceL sTyLe

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  • 3 years ago

    Hi


    These days I am trying to figure out why I get another new line in a RTB when I save the contents to a file. This line is placed at the position around 68000. There are about 72000 characters in the RTB.
    I tried with FileSave method and with Open command. In both cases result was the same.


    Oh, one thing to add. The change is not visible immediately. The new line is there when the file is reopened.
    If the file is opened with WordPad the new line is there.



    Marko

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  • 3 years ago

    James Crowley:


    I am using vb6sp6(EMSETTEXTMODE didn't work with vb6sp4 either) RTB control, I have already implemented URL detection similar to yours.  However now i am trying to get MULTI-LEVEL UNDO to work, which you stated can be revealed with EMSETTEXTMODE.  My attempts at setting a value(42 or any value for that matter) using EMSETTEXTMODE(WMUSER+89) have been unsuccessful, by using EMGETTEXTMODE(WMUSER+90) to read the value(EMGETTEXTMODE always returns a 38).  I have previously cleared the RTB with WMSETTEXT.  I tried SendMessageLong and SendMessage.  EM_SETTEXTMODE always returns a zero(non-error).  Can you shed some light on why this may not be working?  Can you pop an RTB control(VB6) on a form and test this again?


    Thank you

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  • 2 years ago

    I spent AGES working thru this one and couldn't find it anywhere!

    The basic problem is that you have to update the richtextbox.rtf, not .text.

    And it is very fussy about goes in there!!

    A quick and dirty method is to set the richtextbox.text to a value such as "WHATEVER" and then replace that in the richtextbox.rtf with your rtf enabled code.  As for what .rtf recognises in formatting, I resorted to copying and pasting rtf into the richtextbox and then looking at the .rtf value.

    I only wanted a bit of bold!!  By the time I had sorted it out I had decided on a different display method anyway so I hope someone uses this so I haven't wasted my time!!

    The working code from my project, before I dump it:

    richtextbox.Text =

    "REPLACETHIS"

    Do While Not EOF(1)
    Input(1, aLine)
    info = Split(Replace(aLine,

    "\", "\\"), ",")
    TempInfo = TempInfo &
    "\b Result Displayed: \b0" & info(1) & " \par " & "\b URL: \b0 " & info(0) & " \par " & "\b Interval: \b0 " & info(2) & " \par " & "\b Log Path: \b0 " & info(3) & " \par " & " \par "

    Loop

    richtextbox.Rtf = Replace(richtextbox.Rtf, "REPLACETHIS", TempInfo)

    I've just done bolds and replaced the slashes as I was showing URLs and file paths.

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  • 2 years ago

    Kylua, your efforts were not wasted...

    You have probably saved me a week's worth of head-pounding. Why it is so difficult to programmatically modify RTF using this control is beyond me. All of the examples I have seen rely on the .Find method to select the text you want to modify.

    I am still going to learn the intricacies of RTF and what the difference is between a replace and simply assigning a string. Maybe there's some hidden header we can't see in the RTF property that an assignment overwrites but a replace does not.

    Anyway, thanks for sharing this! Big Smile [:D]

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  • 2 years ago

    I am had the same proplems;

    RichTextBox1.SelectionFont.Bold
    RichTextBox1.SelectionFont.Underline etc are readonly

    Solved them the following way

    Me.RichTextBox1.SelectionColor = Color.Blue

    Me.RichTextBox1.SelectionFont = New System.Drawing.Font("Tahoma", 8.25!, System.Drawing.FontStyle.Bold)

    Me.RichTextBox1.SelectedText = BlueBoldText

    Me.RichTextBox1.SelectionColor = Color.Black

    Me.RichTextBox1.SelectionFont = New System.Drawing.Font("Tahoma", 8.25!, System.Drawing.FontStyle.Regular)

    Me.RichTextBox1.SelectedText = BlackRegularText

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  • 8 months ago

    This is long past the topic post date but...

     I used the selection method (where you select text and then update it), for formatting the output of an application's process in a RTF.  This worked great until I needed to buffer the contents of the RTF.  Once I started removing content from the RTF, the formatting I had applied through the selection method caused other text to be come improperly formatted.

    I am now proceeding with the inserting text as RTF method.
     

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