Question

How to print a multiline textbox

Asked by: mindserve

I have a form with a few text fields, one of which is multiline. It truncates off at the end , as the user could enter more than the width of the page. I need to see "source code" on how to format the txtDescription.text  so that it will not be cut off.
   
'///////////////////////////////////////////////////////////
270   Printer.Print Tab(0); Label10;
280   Printer.Print Tab(0); txtDescription.Text
'///////////////////////////////////////////////////////////


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Asked On
2004-12-15 at 15:37:14ID21244236
Tags

textbox

,

multiline

Topic

Visual Basic Programming

Participating Experts
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Comments
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Answers

 

by: vb_elmarPosted on 2004-12-15 at 15:51:48ID: 12835946

You have to split  each line, and putting each line in an array.
-If the Textbox has a big content, you can send each line to the printer.

Try this:

'  "Form1"
'  "List1"
'  "Command1"
'  "Text1"
'  "Label2"
'  "Label1"

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
                           
Const EM_GETLINECOUNT = &HBA
Const EM_LINEFROMCHAR = &HC9
 
 
Public Function GetTextBoxZeilen(Tbox As TextBox, Zeilen() As String) _
  As Long

  'liefert Anzahl der dargestellten Zeilen einer Textbox und übergibt die
  'Zeileninhalte in einem StringArray

   Dim LineNo As Long
   Dim LineLast As Long
   Dim LineStart As Long
   Dim i As Long
   
      'Anzahl der dargestellten Zeilen ermitteln
      LineNo = SendMessage(Tbox.hwnd, EM_GETLINECOUNT, 0, 0&)
      ' Array soweit erweitern, das alle Zeilen hineinpassen
      ReDim Zeilen(LineNo)
     
      For i = 0 To Len(Tbox.Text) - 1
         'Zeilennummer für aktuelles Zeichen
         LineNo = SendMessage(Tbox.hwnd, EM_LINEFROMCHAR, i, 0&)
         If LineNo <> LineLast Then
            'Zeilenwechsel, Zeichen an Zeile zuweisen
            Zeilen(LineLast) = Mid(Tbox.Text, LineStart + 1, i - LineStart)
            LineLast = LineNo
            LineStart = i
         End If
      Next
     
      'letzte Zeile
      Zeilen(LineLast) = Mid(Tbox.Text, LineStart + 1, i - LineStart)
     
      'CrLf´s (Zeilenumbrueche) entfernen
      For i = LBound(Zeilen) To UBound(Zeilen)
         Zeilen(i) = Replace(Zeilen(i), vbCrLf, "")
      Next
     
      ' Rückgabe der Zeilenanzahl
      GetTextBoxZeilen = UBound(Zeilen)
 
End Function



Private Sub Command1_Click()

  ' Das Array, das jede Zeile einzeln enthält
  Dim einzelnezeilen() As String
 
  Dim i
 
  ' Aufrufen der Funktion und übergabe der Zeilenanzahl an Label1
  Label1 = GetTextBoxZeilen(Text1, einzelnezeilen())
                                                   
  ' Alle einzelnen Zeilen durchgehen und
  For i = 0 To UBound(einzelnezeilen)
    ' in List1 hinzufügen
    List1.AddItem einzelnezeilen(i)
  Next i
End Sub



 

by: vb_elmarPosted on 2004-12-15 at 15:53:18ID: 12835961

 

by: BobLambersonPosted on 2004-12-15 at 20:22:53ID: 12837473

Have you got the Multiline property of the txtDescription.text set to True? This will "wrap" the lines in the text box automatically, which, unless I misunderstand, is what you are asking.

Bob

 

by: anvPosted on 2004-12-15 at 20:53:58ID: 12837582

try this
Following Code also sets the alignment..

'Add this to your Declarations Section:
Public Declare Function SetTextAlign Lib "gdi32.dll" (ByVal hdc As Long, ByVal wFlags As Long) As Long
Public Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wmsg As Long, ByVal wparam As Long, lparam As Any) As Long
Public Const TA_CENTER = 6
 

Usage

 'Create a Form with a Command Button and a Multiline Textbox
Option Explicit

Private Sub Command1_Click()
    Dim i As Integer
    Dim ta As Long
    Dim TextLines As Long
    Dim TextBuff As String
    Dim CharRet As Long

    'Add this to your print code!' Center text on printer object
    ta = SetTextAlign(Printer.hdc, TA_CENTER)
    Printer.CurrentY = (Printer.ScaleHeight / .Parent.ScaleHeight) * .Top
    ' Get number of lines in text box
    TextLines = SendMessage(.hwnd, &HBA, 0, 0)
    ' Extract & print each line in TextBox
    For i = 0 To TextLines - 1
        TextBuff = Space(1000)
        Printer.CurrentX = (Printer.ScaleWidth / .Parent.ScaleWidth) * (.Left + (.Width / 2))
        ' Setup buffer for the line!
        Mid(TextBuff, 1, 1) = Chr(79 And &HFF)
        Mid(TextBuff, 2, 1) = Chr(79 \ &H100)
        CharRet = SendMessage(.hwnd, &HC4, i, ByVal TextBuff)
        Printer.Print Left(TextBuff, CharRet)
    Next i
    ' Reset alignment back to original setting
    ta = SetTextAlign(Printer.hdc, ta)
End Sub
 

 

by: BryanDohertyPosted on 2004-12-16 at 05:42:52ID: 12840394

Use the DrawText API:

Declare Function DrawText Lib "user32" Alias "DrawTextA" (ByVal hdc As Long, ByVal lpStr As String, ByVal nCount As Long, lpRect As RECT, ByVal wFormat As Long) As Long

' DrawText() Format Flags
Const DT_TOP = &H0
Const DT_LEFT = &H0
Const DT_CENTER = &H1
Const DT_RIGHT = &H2
Const DT_VCENTER = &H4
Const DT_BOTTOM = &H8
Const DT_WORDBREAK = &H10
Const DT_SINGLELINE = &H20
Const DT_EXPANDTABS = &H40
Const DT_TABSTOP = &H80
Const DT_NOCLIP = &H100
Const DT_EXTERNALLEADING = &H200
Const DT_CALCRECT = &H400
Const DT_NOPREFIX = &H800
Const DT_INTERNAL = &H1000

Type RECT
        Left As Long
        Top As Long
        Right As Long
        Bottom As Long
End Type

                    dim TextBox as RECT

                    '  define location of box on page in twips
                    TextBox.left =
                    TextBox.right =
                    TextBox.top =
                    TextBox.bottom =
                    '
                    lFormat = DT_LEFT + DT_NOPREFIX + DT_WORDBREAK + DT_NOCLIP
                    lTextLen = Len(sText)
                    lRet = DrawText(Printer.hDc, sText, lTextLen, TextBox, lFormat)

 

by: mindservePosted on 2004-12-17 at 03:41:56ID: 12849263

anv: Tried that from andrea vb's site and it did not work. I don't want to center the text, I want to wrap it when it prints.

vb Elmar: Do not understand comments in German and the code sample does not print.

Bob: No, you don't understand the question. It is how to print the multiline textbox

Bryan: I get an error when running your code on line
Textbox=
invalid outside procedure
--------------------------------------------------------------------
I did solve the problem and found code on Microsoft's website and will ask to PAQ this question:
This is the correct code to print a mulitline textbox:
add a label1 to form, 1 command, 1 textbox .


      #If Win32 Then
       Private Declare Function SendMessageAsLong Lib "user32" _
       Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, _
       ByVal wParam As Long, ByVal lParam As Long) As Long
       Private Declare Function SendMessageAsString Lib "user32" _
       Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, _
       ByVal wParam As Long, ByVal lParam As String) As Long
       Dim Buffer As String
       Dim resizing As Integer
       Const EM_GETLINE = 196
       Const EM_GETLINECOUNT = 186
      #Else
       Private Declare Function SendMessage% Lib "user" _
       (ByVal hWnd%, ByVal wMsg%, ByVal wParam%, ByVal lParam As Any)
       Dim Buffer As String
       Dim resizing As Integer
       Const EM_GETLINE = &H400 + 20
       Const EM_GETLINECOUNT = &H400 + 10
      #End If
       Const MAX_CHAR_PER_LINE = 80  ' Scale this to size of text box.

      Private Sub Form_Load()
         ' Size form relative to screen dimensions.
         ' Could define all in move command but recursive definition causes
         ' extra paints.
         frmworkorder.Width = Screen.Width * 0.8
         frmworkorder.Height = Screen.Height * 0.6
         frmworkorder.Move Screen.Width \ 2 - frmworkorder.Width \ 2, _
            Screen.Height \ 2 - frmworkorder.Height \ 2
      End Sub

      Private Sub Form_Resize()
         resizing = -1      ' Global  flag for fGetLineCount function call.
         ' Dynamically scale and position the controls in the form.
         ' This code also is executed on first show of form.
         'txtDescription.Move 0, 0, frmworkorder.Width, frmworkorder.Height \ 2
         txtDescription.SelStart = txtDescription.SelStart
         Command1.Move frmworkorder.Width \ 2 - Command1.Width \ 2, _
            frmworkorder.Height - frmworkorder.Height \ 4
         aGetLineCount.Move frmworkorder.Width \ 2 - Command1.Width \ 2, _
            txtDescription.Height
         X% = fGetLineCount() ' Update to reflect change in text-box size.
         resizing = 0
      End Sub

      Private Sub Command1_Click()
   
         OK = -1
         NL$ = Chr$(13) + Chr$(10)
         ndx& = fGetLineCount&()
               For N& = 1 To ndx&
                  Buffer = fGetLine(N& - 1)
                  Printer.Print Buffer       ' ...or print to the screen.
               Next N&
                                  ' Print a line...
            Buffer = fGetLine(Val(response$) - 1)
            Printer.Print Buffer       ' ...or print to the screen.
   
         Printer.EndDoc
      End Sub

      Private Function fGetLine$(LineNumber As Long)
      ' This function fills the buffer with a line of text
      ' specified by LineNumber from the text-box control.
      ' The first line starts at zero.
      byteLo% = MAX_CHAR_PER_LINE And (255)  '[changed 5/15/92]
      byteHi% = Int(MAX_CHAR_PER_LINE / 256) '[changed 5/15/92]
      Buffer$ = Chr$(byteLo%) + Chr$(byteHi%) + Space$( _
          MAX_CHAR_PER_LINE - 2)
      #If Win32 Then
       X = SendMessageAsString(txtDescription.hWnd, EM_GETLINE, LineNumber, Buffer$)
      #Else
       X = SendMessage(txtDescription.hWnd, EM_GETLINE, LineNumber, Buffer$)
      #End If
      fGetLine$ = Left$(Buffer$, X)
      End Function

      Private Function fGetLineCount&()
       ' This function will return the number of lines
       ' currently in the text-box control.
       ' Setfocus method illegal while in resize event,
       ' so use global flag to see if called from there
       ' (or use setfocus before this function call in general case).
       #If Win32 Then
        lcount = SendMessageAsLong(txtDescription.hWnd, EM_GETLINECOUNT, 0, 0)
       #Else
        lcount = SendMessage(txtDescription.hWnd, EM_GETLINECOUNT, 0&, 0&)
       #End If
        aGetLineCount.Caption = "GetLineCount = " + Str$(lcount)
        fGetLineCount& = lcount
      End Function

      Private Sub txtDescription_Change()
         X% = fGetLineCount() '* Update label to reflect current line
      End Sub

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