ID: 422
Viewed: 3632
Added: Aug 19, 2002
Version:
Snippet uploaded by: snippet
Written By: Unknown
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Get device caps to determine margines
1.Start a new project in Visual Basic. Form1 is created by default.
2.Add two CommandButtons to the Form and paste the following code into the Form's module:
3.Run the project.
4.Click Command1. You will see a message box listing the margins and printable area of the page.
5.Click Command2. Several pages are printed. The printing includes:
Report Header - Only printed at the top of page 1.
Page Header - Consists of some text printed in italics and the current date right-justified on the page. Printed on all pages.
Page Footer - Consists of some text and a page number printed on multiple lines. Printed on all pages.
Additionally, lines numbered 10 through 14 are indented an additional 2 inches and lines numbered 48 through 56 demonstrate enforcing a custom right margin.
1.Start a new project in Visual Basic. Form1 is created by default.
2.Add two CommandButtons to the Form and paste the following code into the Form's module:
3.Run the project.
4.Click Command1. You will see a message box listing the margins and printable area of the page.
5.Click Command2. Several pages are printed. The printing includes:
Report Header - Only printed at the top of page 1.
Page Header - Consists of some text printed in italics and the current date right-justified on the page. Printed on all pages.
Page Footer - Consists of some text and a page number printed on multiple lines. Printed on all pages.
Additionally, lines numbered 10 through 14 are indented an additional 2 inches and lines numbered 48 through 56 demonstrate enforcing a custom right margin.
Highlight all by clicking in box
<!---Declaration--->
Option Explicit
Private Declare Function GetDeviceCaps Lib "gdi32" _
(ByVal hdc As Long, ByVal nIndex As Long) As Long
' Constants for nIndex argument of GetDeviceCaps
Private Const HORZRES = 8
Private Const VERTRES = 10
Private Const LOGPIXELSX = 88
Private Const LOGPIXELSY = 90
Private Const PHYSICALWIDTH = 110
Private Const PHYSICALHEIGHT = 111
Private Const PHYSICALOFFSETX = 112
Private Const PHYSICALOFFSETY = 113
Highlight All
<!---Code--->
Private Sub PrintHeader(PrintTitle As Boolean, Margins As Long, _
LMargin As Long)
Dim BodyFontBold As Boolean, BodyFontSize As Integer
Dim BodyFontItalic As Boolean, HeaderLine As String
Dim PrtPositionX As Integer, PrtPositionY As Integer
If PrintTitle Then ' Only Print Title on first Page
PrtPositionX = Printer.Width / 2 ' center of page
' Save any attributes you change for the header...
BodyFontBold = Printer.Font.Bold
BodyFontSize = Printer.Font.Size
' Change the font for the header...
Printer.Font.Size = 16
Printer.Font.Bold = True
' Print header lines...
HeaderLine = "Title of This Test Report"
' Center Report title
Printer.CurrentX = PrtPositionX - (LMargin + _
Printer.TextWidth(HeaderLine) / 2)
Printer.Print HeaderLine
' Reset the font...
Printer.Font.Size = BodyFontSize
Printer.Font.Bold = BodyFontBold
Else
Printer.NewPage ' Otherwise we are at the bottom of a page
End If
PrtPositionY = Printer.CurrentY ' remember this line
BodyFontItalic = Printer.Font.Italic
Printer.Font.Italic = True
Printer.Print "My very nice, Visual Basic report"
Printer.Font.Italic = BodyFontItalic
HeaderLine = Format(Date, "Long Date")
' Right justify today's date
Printer.CurrentX = Printer.Width - (Margins + _
Printer.TextWidth(HeaderLine))
Printer.CurrentY = PrtPositionY ' return to previous line
Printer.Print HeaderLine
End Sub
Private Sub PrintFooter(LastLine As Integer, _
LineHeight As Integer, LMargin As Long)
Dim PrtPositionX As Integer, PrintText As String
Static PageNum As Integer
PageNum = PageNum + 1
PrtPositionX = Printer.Width / 2 ' center of page
' Move to the end of the page to print the Page Footer:
' LastLine is where there is only room for one more line.
' Set CurrentY to LastLine minus LineHeight times the number of
' additional lines in the Footer.
Printer.CurrentY = LastLine - LineHeight ' for 2 footer lines
PrintText = "Sample Page Footer"
' Print the Footer text centered
Printer.CurrentX = PrtPositionX - (LMargin + _
Printer.TextWidth(PrintText) / 2)
Printer.Print PrintText
PrintText = "This is Page " & CStr(PageNum) & " of Test Report"
Printer.CurrentX = PrtPositionX - (LMargin + _
Printer.TextWidth(PrintText) / 2)
Printer.Print PrintText
End Sub
Private Function GetLargeString() As String
Dim BaseString As String, I As Integer
BaseString = "This is just a fairly long string to demonstrate how "
BaseString = BaseString & "to wrap text to impose your own right "
BaseString = BaseString & "margin. "
For I = 1 To 3
BaseString = BaseString & BaseString
Next I
GetLargeString = BaseString
End Function
Private Sub Command1_Click()
Dim dpiX As Long, dpiY As Long
Dim MarginLeft As Long, MarginRight As Long
Dim MarginTop As Long, MarginBottom As Long
Dim PrintAreaHorz As Long, PrintAreaVert As Long
Dim PhysHeight As Long, PhysWidth As Long
Dim Info As String
dpiX = GetDeviceCaps(Printer.hdc, LOGPIXELSX)
Info = "Pixels X: " & dpiX & " dpi"
dpiY = GetDeviceCaps(Printer.hdc, LOGPIXELSY)
Info = Info & vbCrLf & "Pixels Y: " & dpiY & " dpi"
MarginLeft = GetDeviceCaps(Printer.hdc, PHYSICALOFFSETX)
Info = Info & vbCrLf & "Unprintable space on left: " & _
MarginLeft & " pixels = " & MarginLeft / dpiX & " inches"
MarginTop = GetDeviceCaps(Printer.hdc, PHYSICALOFFSETY)
Info = Info & vbCrLf & "Unprintable space on top: " & _
MarginTop & " pixels = " & MarginTop / dpiY & " inches"
PrintAreaHorz = GetDeviceCaps(Printer.hdc, HORZRES)
Info = Info & vbCrLf & "Printable space (Horizontal): " & _
PrintAreaHorz & " pixels = " & PrintAreaHorz / dpiX & " inches"
PrintAreaVert = GetDeviceCaps(Printer.hdc, VERTRES)
Info = Info & vbCrLf & "Printable space (Vertical): " & _
PrintAreaVert & " pixels = " & PrintAreaVert / dpiY & " inches"
PhysWidth = GetDeviceCaps(Printer.hdc, PHYSICALWIDTH)
Info = Info & vbCrLf & "Total space (Horizontal): " & _
PhysWidth & " pixels = " & PhysWidth / dpiX & " inches"
MarginRight = PhysWidth - PrintAreaHorz - MarginLeft
Info = Info & vbCrLf & "Unprintable space on right: " & _
MarginRight & " pixels = " & MarginRight / dpiX & " inches"
PhysHeight = GetDeviceCaps(Printer.hdc, PHYSICALHEIGHT)
Info = Info & vbCrLf & "Total space (Vertical): " & _
PhysHeight & " pixels = " & PhysHeight / dpiY & " inches"
MarginBottom = PhysHeight - PrintAreaVert - MarginTop
Info = Info & vbCrLf & "Unprintable space on bottom: " & _
MarginBottom & " pixels = " & MarginBottom / dpiY & " inches"
MsgBox Info, , "GetDeviceCaps Returned the Following:"
End Sub
Private Sub Command2_Click()
Dim FooterLines As Integer, TextLine As String
Dim LineHeight As Integer, LastLine As Integer
Dim TotWidth As Long, TotHeight As Long
Dim MarginTop As Long, MarginBottom As Long
Dim TotalPrtAreaVert As Long, TotalPrtAreaHorz As Long
Dim MarginLeft As Long, MarginRight As Long
Dim LeftMargin As Long, HorzMargins As Long
Dim Line As Integer, RptHeaderPrint As Boolean
Dim BreakPoint As Integer, PrintLength As Integer
Dim TempString As String, CharLength As Integer
Dim WrapPoint As Integer, EstWrapPoint As Integer
Printer.Font.Name = "Arial"
Printer.Font.Size = 12
' The next 8 values are in Pixels.
' TotalPrtAreaVert is eqivalent to Printer.ScaleHeight
TotalPrtAreaVert = GetDeviceCaps(Printer.hdc, VERTRES)
TotHeight = GetDeviceCaps(Printer.hdc, PHYSICALHEIGHT)
MarginTop = GetDeviceCaps(Printer.hdc, PHYSICALOFFSETY)
MarginBottom = TotHeight - TotalPrtAreaVert - MarginTop
' TotalPrtAreaHorz is eqivalent to Printer.ScaleWidth
TotalPrtAreaHorz = GetDeviceCaps(Printer.hdc, HORZRES)
TotWidth = GetDeviceCaps(Printer.hdc, PHYSICALWIDTH)
MarginLeft = GetDeviceCaps(Printer.hdc, PHYSICALOFFSETX)
MarginRight = TotWidth - TotalPrtAreaHorz - MarginLeft
HorzMargins = (MarginRight + MarginLeft) * Printer.TwipsPerPixelX
LeftMargin = MarginLeft * Printer.TwipsPerPixelX
' Covert to twips for ease of use
TotalPrtAreaHorz = TotalPrtAreaHorz * Printer.TwipsPerPixelX
LineHeight = Printer.TextHeight("Test")
FooterLines = 2 ' number of lines in footer
LastLine = TotalPrtAreaVert * Printer.TwipsPerPixelY - LineHeight
' Set the break point a line high so we can check it after printing
BreakPoint = LastLine - LineHeight * FooterLines
' reduce the right margin by 1 inch, which is 1440 twips
PrintLength = TotalPrtAreaHorz - 1440
PrintHeader True, HorzMargins, LeftMargin ' Report Header
RptHeaderPrint = False
' Print the Footer when the current Y position >=
' LastLine - LineHeight *
For Line = 1 To 120
If RptHeaderPrint Then
PrintHeader False, HorzMargins, LeftMargin ' Page Header
RptHeaderPrint = False
End If
TextLine = "This is line " & Line
' To indent or set a new left margin, reset CurrentX before each
' new line.
' To use a new right margin, wrap lines at appropriate points.
If Line >= 10 And Line <= 14 Then
TextLine = TextLine & " indented."
Printer.CurrentX = 2 * 1440 ' indent 2 additional inches
ElseIf Line >= 48 And Line <= 52 Then
TextLine = GetLargeString() ' Need String long for demo
End If
' Use TotalPrtAreaHorz to use the default right margin
' or use your own value for PrintLength for a custom right margin
' in this example we bring in the right margin by 1 inch
If Printer.TextWidth(TextLine) > PrintLength Then ' Wrap text
' This estimating technique is used for simplicity
' First, approximate character length
CharLength = Printer.TextWidth("aeiou.") / 6
' Where to start looking for a line break (wrap)
EstWrapPoint = PrintLength / CharLength
WrapPoint = EstWrapPoint
Line = Line - 1 ' Since current line has already been counted
Do While Len(TextLine) > EstWrapPoint
TextLine = Trim(TextLine) ' remove spaces from either end
' break on a space near the estimated break point
Do While InStr(WrapPoint, TextLine, " ") <> WrapPoint
WrapPoint = WrapPoint - 1
Loop
TempString = Mid(TextLine, 1, WrapPoint) ' what will fit
Printer.Print Trim(TempString) ' print what will fit
TextLine = Mid(TextLine, WrapPoint + 1) ' get remaining text
WrapPoint = EstWrapPoint ' Reset the estimated wrap point
Line = Line + 1 ' Increment line counter
If Printer.CurrentY >= BreakPoint Then ' another line?
PrintFooter LastLine, LineHeight, LeftMargin
If Len(TextLine) > 0 Then ' Print header if text remains
PrintHeader False, HorzMargins, LeftMargin
End If
End If
Loop
If Len(TextLine) > 0 Then ' leftover text?
Printer.Print TextLine
Line = Line + 1 ' Increment line counter
If Printer.CurrentY >= BreakPoint Then ' another line?
PrintFooter LastLine, LineHeight, LeftMargin
RptHeaderPrint = True ' Print Header if more lines
End If
End If
Else
Printer.Print TextLine
If Printer.CurrentY >= BreakPoint Then
PrintFooter LastLine, LineHeight, LeftMargin
RptHeaderPrint = True ' Print Header if more lines
End If
End If
Next Line
If Printer.CurrentY > 0 Then
PrintFooter LastLine, LineHeight, LeftMargin ' For last page
End If
Printer.EndDoc ' Finish
MsgBox "Check Printer for results.", , "Done!"
End Sub;No Comments to show
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