Center image coordinate on a form 2

[avarga82]

HELP!

I'm loading a huge (2330 x 2878) image into a picture box on my form. Now, I want to be able to center on any coordinate on that picture. So...for explanation purposes, we have a huge picture of US. I want to be able to center Pittsburgh on the form, or be able to center Houston on the form, etc. The form's AutoScroll is set to true, but can't seem to be able to control them programatically. Any ideas..??

 

[Paszt]

As far as I know, you can't control the form's scrollbars programatically.
You'll want to add VScrollBar and HScrollBar controls and write code that updates the positions of the picturebox, VScrollBar, and HScrollBar.

-Stephen Paszt

 

[avarga82]

Ok...I've moved on from the scroll bar theory. I can 'center' the picture box on the form using it's Top & Left properties, which is sufficient. What I need to do is do it programatically. So, with the form any size, i need to position the picturebox so that coordinate 1022, 777 (random number), is centered on the form. Any ideas??

 

[Paszt]

Try this (pb is a pictureBox):

Sub CenterToPoint(ByVal pt As Point)
    pb.Left = (Me.ClientSize.Width / 2) - pt.X
    pb.Top = (Me.ClientSize.Height / 2) - pt.Y
End Sub

to use:

CenterToPoint(New Point(1022, 777))

to center the image (to the center point of the image):

CenterToPoint(New Point(pb.Width / 2, pb.Height / 2))

-Stephen Paszt

 

[avarga82]

AWESOME!!

THANK YOU...it works great!!

 

[SqueakinSweep]

And very deserving of a Star me thinks??

Sweep
...if it works dont mess with it

 

[avarga82]

How can I give you a star??