Visual Basic

Dave Kreskowiak28-Sep-14 3:59

28-Sep-14 3:59

Yeah, that's what I'm kind of afraid of.

I doubt he's writing this for a U.S. hospital. This seems more like he took a job on vWorker and, like everybody on that site, doesn't have a clue about what he's doing.

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Tim Carmichael28-Sep-14 6:07

Tim Carmichael

28-Sep-14 6:07

With the number of similar questions being asked, I'm wondering if this is a post-secondary assignment for credit. Many of them quote VB6, so it sounds like that is the installed base.

Dave Kreskowiak28-Sep-14 12:43

28-Sep-14 12:43

Oh wonderful! A bunch of people being ripped off being "taught" out of date skills!

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Mycroft Holmes28-Sep-14 14:05

Mycroft Holmes

28-Sep-14 14:05

And will eventually end up quoting peanuts on vWorker!

Never underestimate the power of human stupidity
RAH

tif img print preview

drago1127-Sep-14 12:07

27-Sep-14 12:07

Good day,
I have a tiff img (img is including pic and text )
Tiff is bigger than 1print page, so I assuming when I call framecount should put 2 pages, but not, always show 1p Page is not completed it showes2/3 1/3 it should go to other page but doesn't show. Sorry I read most of codes what people wrote, but they are not working for me.
If somebody can help will be greatefull
Regards
Drago

Dave Kreskowiak27-Sep-14 14:41

27-Sep-14 14:41

drago11 wrote:
when I call framecount

Framecount? On what? The image? It'll always be 1 since it know nothing of the printer that is going to print the image.

The rest of your post is unintelligible. You're going to have to provide quite a bit more detail to your question to get a clear answer.

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drago1127-Sep-14 19:41

27-Sep-14 19:41

Vb net 2010
Tif img
I would like to print that image by calling print preview
Image is larger than one print page.
I cannot get another (second) page where it should be rest of that img.
I'm using
Img.framecount(framedimension .page) where count is always 1, but should be 2.
(To divide 1 tiff img to 2 print pages)
Thanks

Imports System.Drawing.Printing
Imports System.Drawing.Imaging
Imports System.Drawing
Imports System.IO

Public Class Form2
Private fileCount As Integer = 0
Private currPage As Integer = 0
Private pCount As Integer = 0
Private currImage As Image

Private Sub vPrintDocument()
Dim vPrintDoc As New PrintDocument
vPrintDoc.DefaultPageSettings.Landscape = False

AddHandler vPrintDoc.PrintPage, AddressOf docPrintPage
AddHandler vPrintDoc.BeginPrint, AddressOf docBeginPrint

Dim i As PrintPreviewDialog = New PrintPreviewDialog
i.Document = vPrintDoc
i.ShowDialog()

End Sub

Private Sub docBeginPrint(ByVal sender As Object, ByVal e As PrintEventArgs)

currPage = 0
currImage = Image.FromFile("C:\out.tif")

pCount = currImage.GetFrameCount(Imaging.FrameDimension.Page)

‘MsgBox(pCount)
End Sub

Private Sub docPrintPage(ByVal sender As Object, ByVal e As PrintPageEventArgs)

currImage.SelectActiveFrame(Imaging.FrameDimension.Page, currPage)

e.Graphics.DrawImage(currImage, 20, 20)
currPage = currPage + 1
If currPage < pCount Then
e.HasMorePages = True
Else
e.HasMorePages = False
End If

End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Call vPrintDocument()
End Sub
End Class

modified 28-Sep-14 2:21am.

Eddy Vluggen28-Sep-14 2:47

28-Sep-14 2:47

That method does not return the amount of pages that the image is printed on; it returns the amount of frames[^] (total images in an animation) in there.

If you want to know how many pages are needed to print something, then you'd have to create a print-preview using the printer-driver.

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Dave Kreskowiak28-Sep-14 3:36

28-Sep-14 3:36

Again, FrameCount should return 1, unless this is a multiframe, "animated" image. The image knows NOTHING about what you're displaying the image on or printing it on. How could it possibly know??

If you need to print the entire image on multiple pages, YOU have to write the code that breaks the image up into multiple images and figures out exactly what dimensions each sub-image has to be based on the printable area of the selected printer page.

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drago1128-Sep-14 10:14

28-Sep-14 10:14

Thanks Dave, Eddy
Do you have any ideas how I can do that...

Eddy Vluggen29-Sep-14 5:35

29-Sep-14 5:35

Answered here[^] by the topicstarter.

I upvoted the answer since he took the time to share it.

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Create Image from Panel Control

James.Cook201-Oct-14 3:54

James.Cook20

1-Oct-14 3:54

I'm wondering if this is a post-secondary assignment for credit.

http://www.falgames.com/

gwittlock27-Sep-14 9:02

27-Sep-14 9:02

I thought I seen an example up here before But I will be dang if I can find it now.

I have a panel control which has geometry created on it from a third party dll. What I would like to do is that and create an image (preferably with transparent background) of what the user is seeing on that screen.

can anyone point me in the right direction?

Oh I guess I should mention that I am using VS2013 vb.net

Thanks

Eddy Vluggen27-Sep-14 13:40

27-Sep-14 13:40

A panel is a control, and those can be drawn to a bitmap. See MSDN[^] Smile | :)

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gwittlock27-Sep-14 15:23

27-Sep-14 15:23

Thanks for the advice but that does not create a transparent bitmap and in most cases will not work if the actual drawing to the panel is done through a 3rd party dll.

I think what I really need is more of a screen capture of the panel and then convert its size and transparentcy

gwittlock27-Sep-14 21:27

27-Sep-14 21:27

I found this bit of code to work with 2 exceptions. 1) how to re-size it to a smaller image (So I can display a thumbnail type image and 2) how to make the background transparent.

I want item 2 because the image is displayed in a panel control with a black background. That is what the user needs to see. But when I create the image I do not want the black background

Private Sub my_capture(ctrl As Control, fileName As String)
       Dim bounds As Rectangle = ctrl.Bounds
       Dim pt As Point = ctrl.PointToScreen(bounds.Location)
       Dim bitmap As New Bitmap(bounds.Width, bounds.Height)
       Using g As Graphics = Graphics.FromImage(bitmap)
           g.CopyFromScreen(New Point(pt.X - ctrl.Location.X, pt.Y - ctrl.Location.Y), Point.Empty, bounds.Size)
       End Using

       bitmap.Save(fileName, ImageFormat.Png)
   End Sub

Eddy Vluggen28-Sep-14 1:53

28-Sep-14 1:53

You'd have to specify which color should become transparent[^].

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gwittlock28-Sep-14 4:05

28-Sep-14 4:05

I changed my code to this:
But it had no effect. I still get the image with a black background.

I am not sure how to include images with the reply otherwise I would show you before and after images

Dim bounds As Rectangle = ctrl.Bounds
        Dim pt As Point = ctrl.PointToScreen(bounds.Location)
        Dim myBitmap As New Bitmap(bounds.Width, bounds.Height)

        myBitmap.MakeTransparent(ctrl.BackColor)

        Using m_g As Graphics = Graphics.FromImage(myBitmap)
            m_g.CopyFromScreen(New Point(pt.X - ctrl.Location.X, pt.Y - ctrl.Location.Y), Point.Empty, bounds.Size)
            m_g.Dispose()
        End Using

        myBitmap.Save(fileName, ImageFormat.Png)
        myBitmap.Dispose()

drago1128-Sep-14 21:13

28-Sep-14 21:13

Hi Imports System.Drawing.Imaging
Imports System.Drawing.Printing

Private Sub PrintDocument1_PrintPage(ByVal Sender As Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage

Static page As Integer = 1

Dim startPosition As Integer = (page - 1) * PrintDocument1.DefaultPageSettings.Bounds.Height

Static maxPages As Integer = 0

If page = 1 Then

For Each ctrl As Control In Me.pRight19.Controls
If TypeOf ctrl Is TextBox Or TypeOf ctrl Is Label Or TypeOf ctrl Is PictureBox Or TypeOf ctrl Is RichTextBox Then
ctrl.Tag = Int((ctrl.Top + ctrl.Height) / PrintDocument1.DefaultPageSettings.Bounds.Height) + 1
If CInt(ctrl.Tag) > maxPages Then maxPages = CInt(ctrl.Tag)
End If
Next

End If

For Each ctrl As Control In Me.pRight19.Controls
If CInt(ctrl.Tag) = page Then
If TypeOf ctrl Is TextBox Or TypeOf ctrl Is Label Or TypeOf ctrl Is RichTextBox Then
Dim sf As New System.Drawing.StringFormat
If TypeOf ctrl Is TextBox Then
If DirectCast(ctrl, TextBox).TextAlign = HorizontalAlignment.Right Then
sf.Alignment = StringAlignment.Far
Else
sf.Alignment = StringAlignment.Near
End If
ElseIf TypeOf ctrl Is Label Then
If DirectCast(ctrl, Label).TextAlign = ContentAlignment.TopLeft Then
sf.Alignment = StringAlignment.Far
End If

ElseIf TypeOf ctrl Is RichTextBox Then
If DirectCast(ctrl, RichTextBox).SelectionAlignment = ContentAlignment.TopLeft Then
sf.Alignment = StringAlignment.Near
End If

End If
sf.FormatFlags = StringFormatFlags.NoClip
e.Graphics.DrawString(ctrl.Text, ctrl.Font, New SolidBrush(ctrl.ForeColor), New Rectangle(ctrl.Left, ctrl.Top - startPosition, ctrl.Width + 50, ctrl.Height), sf)
ElseIf TypeOf ctrl Is PictureBox Then
e.Graphics.DrawImage(DirectCast(ctrl, PictureBox).Image, New PointF(ctrl.Left, ctrl.Top - startPosition))

End If
End If
Next
page += 1
If page > maxPages Then
e.HasMorePages = False
page = 1
maxPages = 0
Else
e.HasMorePages = True
End If

End Sub

Private Sub ToolStripButton1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton1.Click

' PrintDocument1.Print()
PrintPreviewDialog1.Document = PrintDocument1
PrintPreviewDialog1.ShowDialog()

End Sub

gwittlock29-Sep-14 3:21

29-Sep-14 3:21

Drago11

I am not sure what all the printing code has to do with my question. Maybe you just pasted it in to the wrong question. Am I missing something?

Eddy Vluggen29-Sep-14 5:33

29-Sep-14 5:33

That's the good answer, but to the wrong question Laugh | :laugh:

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Eddy Vluggen28-Sep-14 22:12

28-Sep-14 22:12

Set the transparency AFTER you capture the screen.

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gwittlock29-Sep-14 3:19

29-Sep-14 3:19

Eddy

yep that is what the issue was. Setting it after did the trick.

Now that I have that working(thanks to you) and I see the results, I think I need to save the image as B/W or greyScale.

Is that difficult?

Eddy Vluggen29-Sep-14 5:32

29-Sep-14 5:32

Not very hard, but I reckon it will need to remain a 32bit argb format for transparency to work.

There's a howto[^] on MSDN Smile | :)

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gwittlock29-Sep-14 6:15