Newsgroup: it.comp.lang.visual-basic
Titolo: [?] textbox multilinea

ciao a tutti.
Qualcuno mi sa indicare come rilevare il numero di linee inserite in una
textbox multilinea e come fare a tirare fuori l'ennesima linea?
Il problema che devo risolvere, e' questo:
ho una TextBox multilinea dove inserisco una descrizione aggiuntiva ad un
articolo per poi stamparlo in fattura.
Dato che uso l'oggetto printer, questa descrizione la posiziono con
printer.currentx.
Facendo cosi', il comando printer.print, mi stampa la prima linea dove
voglio io; le altre, invece, me le stampa in posizione x=0 poiche' il testo
contiene dei carriage return.
Mi sembrava di ricordare di poter gestire le singole linee di un campo memo
ma non trovo piu' come.
grazie per l'aiuto
buon lavoro a tutti!
BluPegaso
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 textbox multilinea e come fare a tirare fuori l'ennesima linea?
API SendMessage. Riunisci il link se č spezzato, ci dovrebbero
essere due soluzioni diverse:
http://groups.google.com/groups?hl=it&selm=vYJd4.7990%24I3.83243%40news.infostra
da.it
Bye, G.

il messaggio risultante e': impossibile trovare l'articolo !
puoi controllare ?
ciao
blupegaso
"Paperino" <non...@lo.dico> ha scritto nel messaggio
news:a1ngl2$64l0$1...@stargate1.inet.it...



 Come faccio a stampare un Rich Text Box (o una Text Box) facendo in modo
che il testo non occupi tutta la larghezza del foglio, ma dimensioni
precise? Inoltre, come posso anche indicare il tipo di carattere, formato,
ecc. (quello che compare all'interno del Common Dialog, per intenderci)?
domanda 2: usando il common dialog, appunto, e il seltext del controllo che
ti interessa.
domanda 1: cerco di raccogliere un codice per la stampa di un rtb che avevo
trovato sulla rete e che mi sembrava funzionasse abbastanza bene, con
qualche adattamento mio. e' un anno esatto che non lo guardo quindi p.f. non
chiedermi spiegazioni :)
Private Sub cmdOK_Click()
' 1 CM = 567 TWIPS
On Error GoTo errman
Dim LM As Long, TM As Long, RM As Long, BM As Long
LM = Val(txtLM) * 567
TM = Val(txtTM) * 567
RM = Val(txtRM) * 567
BM = Val(txtBM) * 567
With frmMain.ActiveForm.RTF
'RTFPrint .Left = .Left
'RTFPrint .Top = .Top
RTFPrint.Width = Width
RTFPrint.Height = Height
RTFPrint.RightMargin = .RightMargin
RTFPrint.SelFontName = .SelFontName
RTFPrint.SelFontSize = .SelFontSize
RTFPrint.SelBold = .SelBold
RTFPrint.SelItalic = .SelItalic
If optPrintAll Then
RTFPrint.Text = .Text
ElseIf optPrintSel Then
RTFPrint.Text = .SelText
End If
End With
RTFPrint.SelLength = 0
PrintRTF RTFPrint, LM, TM, RM, BM
' Unload Me
Exit Sub
errman:
MsgBox Error
Exit Sub
End Sub
Public Sub PrintRTF(RTF As RichTextBox, LeftMarginWidth As Long, _
TopMarginHeight, RightMarginWidth, BottomMarginHeight)
On Error GoTo errman
Dim LeftOffset As Long, TopOffset As Long
Dim LeftMargin As Long, TopMargin As Long
Dim RightMargin As Long, BottomMargin As Long
Dim fr As FormatRange
Dim rcDrawTo As Rect
Dim rcPage As Rect
Dim TextLength As Long
Dim r As Long
Dim J
For J = 1 To Val(frmStampa.txtCopies) ' aggiunto io => # copie
frmStampa.lblPrintingPage = 1
frmStampa.lblPrintingCopy = Val(frmStampa.lblPrintingCopy) + 1
DoEvents
Dim NextCharPosition As Long
Printer.Print Space(1) ' Start a print job to get a valid Printer.hDC
Printer.ScaleMode = vbTwips
' Get the offsett to the printable area on the page in twips
LeftOffset = Printer.ScaleX(GetDeviceCaps(Printer.hdc, _
PHYSICALOFFSETX), vbPixels, vbTwips)
TopOffset = Printer.ScaleY(GetDeviceCaps(Printer.hdc, _
PHYSICALOFFSETY), vbPixels, vbTwips)
' Calculate the Left, Top, Right, and Bottom margins
LeftMargin = LeftMarginWidth - LeftOffset
TopMargin = TopMarginHeight - TopOffset
RightMargin = (Printer.Width - RightMarginWidth) - LeftOffset
BottomMargin = (Printer.Height - BottomMarginHeight) - TopOffset
' Set printable area rect
rcPage.Left = 0
rcPage.Top = 0
rcPage.Right = Printer.ScaleWidth
rcPage.Bottom = Printer.ScaleHeight
' Set rect in which to print (relative to printable area)
rcDrawTo.Left = LeftMargin
rcDrawTo.Top = TopMargin
rcDrawTo.Right = RightMargin
rcDrawTo.Bottom = BottomMargin
' Set up the print instructions
fr.hdc = Printer.hdc ' Use the same DC for measuring and rendering
fr.hdcTarget = Printer.hdc ' Point at printer hDC
fr.rc = rcDrawTo ' Indicate the area on page to draw to
fr.rcPage = rcPage ' Indicate entire size of page
fr.chrg.cpMin = 0 ' Indicate start of text through
fr.chrg.cpMax = -1 ' end of the text
' Get length of text in RTF
TextLength = Len(frmStampa.RTFPrint.Text)
Do ' Loop printing each page until done
' Print the page by sending EM_FORMATRANGE message
NextCharPosition = SendMessage(frmStampa.RTFPrint.hwnd, EM_FORMATRANGE,
True, fr)
If NextCharPosition >= TextLength Then Exit Do 'If done then exit
fr.chrg.cpMin = NextCharPosition ' Starting position for next page
Printer.NewPage ' Move on to next page
frmStampa.lblPrintingPage = Val(frmStampa.lblPrintingPage) + 1
DoEvents
Printer.Print Space(1) ' Re-initialize hDC fr.hDC = Printer.hDC
fr.hdcTarget = Printer.hdc
Loop
' Commit the print job
Printer.EndDoc ' Allow the RTF to free up memory
Next J
r = SendMessage(frmStampa.RTFPrint.hwnd, EM_FORMATRANGE, False, ByVal
CLng(0))
Exit Sub
errman:
MsgBox Error
Exit Sub
End Sub
'IN UN BAS
' PRINT RTF
Type Rect
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Type CharRange
cpMin As Long ' First character of range (0 for start of doc)
cpMax As Long ' Last character of range (-1 for end of doc)
End Type
Type FormatRange
hdc As Long ' Actual DC to draw on
hdcTarget As Long ' Target DC for determining text formatting
rc As Rect ' Region of the DC to draw to (in twips)
rcPage As Rect ' Region of the entire DC (page size) (in twips)
chrg As CharRange ' Range of text to draw (see above declaration)
End Type
'Global Const WM_USER As Long = &H400
Global Const EM_FORMATRANGE As Long = WM_USER + 57
Global Const EM_SETTARGETDEVICE As Long = WM_USER + 72
Global Const PHYSICALOFFSETX As Long = 112
Global Const PHYSICALOFFSETY As Long = 113
Declare Function GetDeviceCaps _
Lib "gdi32" (ByVal hdc As Long, _
ByVal nIndex As Long) As Long
Declare Function SendMessage _
Lib "user32" Alias "SendMessageA" _
(ByVal hwnd As Long, ByVal Msg As Long, _
ByVal WP As Long, lp As Any) As Long
Declare Function CreateDC _
Lib "gdi32" Alias "CreateDCA" _
(ByVal lpDriverName As String, ByVal lpDeviceName As String, _
ByVal lpOutput As Long, ByVal lpInitData As Long) As Long
 
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