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Scale JPG to fill Picture box

Posted on 2002-06-06
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Last Modified: 2013-11-22
I want to print a form. The form has 2 picture boxes and a scale bar.

On the form load I set one picture box to point to a bmp, and the other to point to a jpg.

The jpg is of variable dimensions. (It is a map. The maps size is dependant on the parents window size.)

anyhow - the idea is I want to have the picture box as a fixed size, and then scale the pictures to fit them.

Cheers,

woot.

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Question by:woottond
5 Comments
 
LVL 4

Expert Comment

by:TomLaw1999
ID: 7060055
Have you considered using an image instead of a picture box.
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Accepted Solution

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vbDoc earned 400 total points
ID: 7060200
Here you go .. ..
Inputs:  Filepath (The path of the image to load)
Returns: None
Assumes: Create a new form (in my example: frmMain), Place a picturebox control on that form, name it picStart. Set picStart.Autosize to TRUE. Set picStart.Visible to FALSE. Create another picturebox on the form called picMain. This will be the picturebox that determins the final size of your image. Set picMain.Autosize to False. Create an Image Object *INSIDE* the picturebox control. Name the image control imgMain. Set ingMain.Stretch to TRUE.
Side Effects: NONE
***************************************************
Private Sub LoadImage(filePath As String)
    Dim X As Long
    Dim Y As Long
    With frmMain
        .imgMain.Visible = False
        .picStart.Picture = LoadPicture(filePath)
        X = .picStart.Width
        Y = .picStart.Height
        If X > .picMain.Width Then
             X = .picMain.Width
        End If '»If X > .picMain.Width Then
        If Y > .picMain.Height Then
             Y = .picMain.Height
        End If '»If Y > .picMain.Height Then
        .imgMain.Width = X
        .imgMain.Height = Y
        ' *** center the picture
        .imgMain.Top = (.picMain.Height \ 2) - (.imgMain.Height \ 2)
        .imgMain.Left = (.picMain.Width \ 2) - (.imgMain.Width \ 2)

        ' *** now copy the image from the start picbox(picstart) into the
        '     display image field (imgMain)
        .imgMain.Picture = .picStart.Picture
        .imgMain.Visible = True
    End With '»With frmMain
End Sub
*********************************************
Regards, John vb_doc@hotmail.com
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LVL 22

Expert Comment

by:rspahitz
ID: 7060352
Imagebox would be my first choice, too.

Otherwise, you can use the PaintPicture method of the Picturebox to scale the picture to the desired size.
0
 

Author Comment

by:woottond
ID: 7062057
Thank you to both of you.

I had not noticed the Image object.

I created a Picture Box and put the image in it. Problem solved.

I didn't have to use vbDoc's code but I used the image in picbox they said.

I did use a image as TomLaw1999 said...

so points for both sound fair??
0
 

Author Comment

by:woottond
ID: 7062062
Thank you vbDoc AND TomLaw1999

cheers,

woot.
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