stretch image

[lamckh]

How to stretch a image in VB?

[Cimperiali]

If you're lloking for a visual effect, you can use imagebox and set the stretch property to true.
If you're looking for a permanet zoom effect (= rewriting the image file as bigger or smaller), then wait for Shree help or have a search (look at Forum Index|FAq|Profile|...|Search|...) for "resize" or "zoom" or "stretch"

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and all the other wonderful people who made and make Codeguru a great place.
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The Rater

[Cakkie]

In reply to:

wait for Shree help




Nice tip, he's the man

Tom Cannaerts
slisse@planetinternet.be

Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the universe trying to produce bigger and better idiots. So far, the universe is winning -- Rich Cook

[Iouri]

Unless your image is a metafile, the picture box doesn't allow stretching.
You can use the Image control which has a stretch property, or use two pictureboxes.

Here's How to stretch an image:


Dim ViewLft as Integer, ViewTop as Integer
Dim ViewWid as Integer, ViewHgt as Integer
Dim Zoom as Single

private Sub ComputeDim()
ViewWid = picView.Width / Zoom
ViewHgt = picView.Height / Zoom
If ViewWid > picImage.Width then ViewWid = picImage.Width
If ViewHgt > picImage.Height then ViewHgt = picImage.Height
End Sub

private Sub ShowImage()
picView.Cls
picView.PaintPicture picImage.Image, 0, 0, ViewWid * Zoom, ViewHgt * Zoom, ViewLft, ViewTop, ViewWid, ViewHgt
End Sub

private Sub Form_Load()
ViewLft = 0
ViewTop = 0
Zoom = 1
ComputeDim
ShowImage
End Sub

private Sub picView_MouseDown(Button as Integer, Shift as Integer, X as Single, Y as Single)
If Button = vbLeftButton then
Zoom = Zoom + 0.5
else
Zoom = Zoom - 0.5
End If
If Zoom < 0.5 then Zoom = 0.5
ComputeDim
ShowImage
End Sub


Iouri Boutchkine
iouri@hotsheet.com