Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

How to do get system.drawing.graphics content into a picture box?

Posted on 2011-02-24
1
Medium Priority
?
434 Views
Last Modified: 2012-05-11
I have created a functin that scales an image.

The scaling appears to go ok, but the problem is that I have no idea how to get the scaled graphic (gt_dest) back into the picturebox (picBannerBox) that is on Form1.

How do I do that?
Private Function ScaleImage(ByVal imgTemp As Image, ByVal box As PictureBox) As Graphics
        Dim fSize As String
        Dim iNewx As Integer = 0
        Dim iNewy As Integer = 0

        Dim oldBMP As New Bitmap(CInt(imgTemp.Width), CInt(imgTemp.Height))

        'Determine which side is larger than the canvas, 

        If ImageTooWide(imgTemp) And ImageTooTall(imgTemp) Then
            '...and if both are larger, pick the larger side.
            If imgTemp.Height > imgTemp.Width Then
                fSize = "height"
            Else
                fSize = "width"
            End If
        Else
            '... Other wise pick the one that is larger.
            If ImageTooWide(imgTemp) Then fSize = "width"
            If ImageTooTall(imgTemp) Then fSize = "height"
        End If

        Select Case fSize
            Case "width"
                iNewx = picBannerBox.Width
                iNewy = iNewx / imgTemp.Width * imgTemp.Height
            Case "height"
                iNewy = picBannerBox.Height
                iNewx = iNewy / imgTemp.Height * imgTemp.Width
        End Select
        Dim newBMP As New Bitmap(iNewx, iNewy)
        'Create a blank, new graphic that is the correct *new* size
        Dim gt_dest As Graphics = Graphics.FromImage(newBMP)
        'Draw our picture onto it, scaling it...
        gt_dest.DrawImage(imgTemp, 0, 0, iNewx + 1, iNewy + 1)
        'Draw new image to picBannerBox
        '????????????
    End Function

Open in new window

0
Comment
Question by:DrDamnit
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 32

Accepted Solution

by:
DrDamnit earned 0 total points
ID: 34974327
Figured it out:

Dim newBMP As New Bitmap(iNewx, iNewy)
        Dim newImage As Image
        newImage = CType(newBMP, Image)

        'Create a blank, new graphic that is the correct *new* size
        Dim gt_dest As Graphics = Graphics.FromImage(newImage)
        'Draw our picture onto it, scaling it...
        gt_dest.DrawImage(imgTemp, 0, 0, iNewx + 1, iNewy + 1)
        Return newImage

Open in new window

0

Featured Post

Free learning courses: Active Directory Deep Dive

Get a firm grasp on your IT environment when you learn Active Directory best practices with Veeam! Watch all, or choose any amount, of this three-part webinar series to improve your skills. From the basics to virtualization and backup, we got you covered.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article describes relatively difficult and non-obvious issues that are likely to arise when creating COM class in Visual Studio and deploying it by professional MSI-authoring tools. It is assumed that the reader is already familiar with the cla…
This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
Add bar graphs to Access queries using Unicode block characters. Graphs appear on every record in the color you want. Give life to numbers. Hopes this gives you ideas on visualizing your data in new ways ~ Create a calculated field in a query: …
Visualize your data even better in Access queries. Given a date and a value, this lesson shows how to compare that value with the previous value, calculate the difference, and display a circle if the value is the same, an up triangle if it increased…

721 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question