Question

Scale JPG to fill Picture box

Asked by: woottond

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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Asked On
2002-06-06 at 11:14:51ID20308675
Tags

scale

Topics

Visual Basic Programming

,

Delphi Printing

Participating Experts
3
Points
100
Comments
5

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Answers

 

by: TomLaw1999Posted on 2002-06-06 at 11:37:18ID: 7060055

Have you considered using an image instead of a picture box.

 

by: vbDocPosted on 2002-06-06 at 12:48:15ID: 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

 

by: rspahitzPosted on 2002-06-06 at 14:25:27ID: 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.

 

by: woottondPosted on 2002-06-07 at 07:04:42ID: 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??

 

by: woottondPosted on 2002-06-07 at 07:05:30ID: 7062062

Thank you vbDoc AND TomLaw1999

cheers,

woot.

20120131-EE-VQP-002

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