VB.Net PrintForm autofit - vb.net

Question

Im having trouble with autofitting the printed form in my application.
My code at the moment looks like this.
Dim pf As New PowerPacks.Printing.PrintForm
pf.Form = Me
pf.PrinterSettings.DefaultPageSettings.Landscape = True
pf.Print(Me, PowerPacks.Printing.PrintForm.PrintOption.ClientAreaOnly)
However, it cuts off a chunk of my form on the printed page.
I cant find anything to do with Autofit on the internet so hopefully one of you guys can come up with something.

Answer 1

Imports System.Drawing
Imports System.Windows.Forms
''' <summary>
''' Prints a screengrab of the form
''' </summary>
''' <remarks></remarks>
Public Class PrintForm
'USAGE:
' Dim pf As New PrintForm(Me)
' pf.PrintPreview()
' - or-
' pf.Print()
'
Private Declare Auto Function BitBlt Lib "gdi32.dll" (ByVal hDIDest As IntPtr, ByVal nXDest As Integer, ByVal nYDest As Integer, ByVal nWidth As Integer, ByVal nHeight As Integer, ByVal hdcSrc As IntPtr, ByVal nXSrc As Integer, ByVal nYSrc As Integer, ByVal dwRop As System.Int32) As Boolean ' API call to help generate final screenshot
Private mbmpScreenshot As Bitmap ' Variable to store screenshot
Private mblnLandscape As Boolean = False
Public Enum PrintMode_ENUM As Integer
[Default]
FitToPage
End Enum
Private menuPrintMode As PrintMode_ENUM = PrintMode_ENUM.Default
'
Private mfrm As Form
Public Sub New(ByVal frm As Form)
mfrm = frm
Call GrabScreen()
End Sub
'
''' <summary>
''' Determines page settings for current page e.g. Orientation
''' </summary>
''' <param name="sender"></param>
''' <param name="e"></param>
''' <remarks></remarks>
Private Sub QueryPageSettings(ByVal sender As System.Object, ByVal e As System.Drawing.Printing.QueryPageSettingsEventArgs)
'
Dim pgsTemp As System.Drawing.Printing.PageSettings = New System.Drawing.Printing.PageSettings()
pgsTemp.Landscape = mblnLandscape
e.PageSettings = pgsTemp
'
End Sub
'
Public Sub Print(landscape As Boolean, printMode As PrintMode_ENUM, Optional ByVal docname As String = "PrintForm", Optional ByVal PrinterName As String = "")
mblnLandscape = landscape
menuPrintMode = printMode
'create the document object
Using pdcNew As New Printing.PrintDocument
'
'wire up event handlers to handle pagination
AddHandler pdcNew.PrintPage, AddressOf PrintPage
AddHandler pdcNew.QueryPageSettings, AddressOf QueryPageSettings
'
Using docOutput As Printing.PrintDocument = pdcNew
If PrinterName > "" Then
docOutput.PrinterSettings.PrinterName = PrinterName
End If
docOutput.DocumentName = docname
docOutput.Print()
End Using
End Using
End Sub
'
''' <summary>
''' Preview the Report on screen
''' </summary>
''' <remarks></remarks>
Public Sub PrintPreview(landscape As Boolean, printMode As PrintMode_ENUM, Optional ByVal docname As String = "PrintForm", Optional ByVal Owner As Form = Nothing)
mblnLandscape = landscape
menuPrintMode = printMode
'
'create the document object
Using pdcNew As New Printing.PrintDocument
'
'wire up event handlers to handle pagination
AddHandler pdcNew.PrintPage, AddressOf PrintPage
AddHandler pdcNew.QueryPageSettings, AddressOf QueryPageSettings
'
Using ppvPreview As New PrintPreviewDialog
ppvPreview.Document = pdcNew
ppvPreview.FindForm.WindowState = FormWindowState.Maximized
If IsNothing(Owner) Then
ppvPreview.ShowDialog()
Else
ppvPreview.ShowDialog(Owner)
End If
End Using
End Using
End Sub
Sub PrintPage(ByVal sender As System.Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs)
Dim g As Graphics = e.Graphics 'shortcut
'g.DrawRectangle(Pens.Red, e.MarginBounds) 'DEBUG: use this line to check margins
'
' Method that handles the printing
Using objImageToPrint As Graphics = e.Graphics
Select Case menuPrintMode
Case PrintMode_ENUM.FitToPage
Dim rctTarget As Rectangle
If (mbmpScreenshot.Width / mbmpScreenshot.Height) < (e.MarginBounds.Width / e.MarginBounds.Height) Then
'fit height
rctTarget = New Rectangle(e.MarginBounds.X, e.MarginBounds.Y, CInt(mbmpScreenshot.Width * e.MarginBounds.Height / mbmpScreenshot.Height), e.MarginBounds.Height)
Else
'fit width
rctTarget = New Rectangle(e.MarginBounds.X, e.MarginBounds.Y, e.MarginBounds.Width, CInt(mbmpScreenshot.Height * e.MarginBounds.Width / mbmpScreenshot.Width))
End If
'g.DrawRectangle(Pens.Blue, rctTarget) 'DEBUG: use this line to check target rectangle
objImageToPrint.DrawImage(mbmpScreenshot, rctTarget)
Case Else 'default
objImageToPrint.DrawImage(mbmpScreenshot, 0, 0)
End Select
End Using
'
e.HasMorePages = False
End Sub
'
Private Sub GrabScreen()
' Performs a screenshot, saving results to bmpScreenshot
Dim objGraphics As Graphics = mfrm.CreateGraphics
Dim rctForm As Rectangle = mfrm.ClientRectangle 'including the border is beyond the scope of this demo program. See http://support.microsoft.com/kb/84066 for GetSystemMetrics() API to get size of border
'
Const SRCCOPY As Integer = &HCC0020
mbmpScreenshot = New Bitmap(rctForm.Width, rctForm.Height, objGraphics)
Dim objGraphics2 As Graphics = Graphics.FromImage(mbmpScreenshot)
Dim deviceContext1 As IntPtr = objGraphics.GetHdc
Dim deviceContext2 As IntPtr = objGraphics2.GetHdc
'
BitBlt(deviceContext2, rctForm.X, rctForm.Y, rctForm.Width, rctForm.Height, deviceContext1, 0, 0, SRCCOPY)
objGraphics.ReleaseHdc(deviceContext1)
objGraphics2.ReleaseHdc(deviceContext2)
End Sub
'
End Class
'

Answer 2

Personally, I don't much like the PowerPacks.Printing.PrintForm. I'd rather just use GDI+ and have more control over how it prints. This article might help:
http://www.c-sharpcorner.com/uploadfile/srajlaxmi/printing-windows-form-in-C-Sharp-net/