Convertion of pixels to millimeters

[Guest]

I'm programming in visual basic .net and i need to determine the size, in
millimeters, of some lines on a picturebox (determined by points). i've been
searching in google but i found nothing except that vb .Net measures things
in pixels (rather than twips, like VB6), and that pixels are very difficult
to convert because they are influenciated by the monitor and screen
resolution. But i found nothing on how to convert pixels to another
measurement scale.
Can you help?

My thanks in advanced

 

[Cor Ligthert [MVP]]

Ricardo,

Does this helps you?

http://groups.google.com/group/microsoft.public.dotnet.languages.vb/msg/6d6b9867fa9d8a62?hl=en&

I hope this helps,

Cor

 

[Herfried K. Wagner [MVP]]

http://groups.google.com/group/microsoft.public.dotnet.languages.vb/msg/6d6b9867fa9d8a62?hl=en&

There's something wrong with the code. The 'Width' property of a form will
return the size in pixels, not millimeters.

Use the code below instead:

\\\
Const MillimetersPerInch As Single = 25.4
Dim g As Graphics = Me.CreateGraphics()
Dim px As Integer = 22
Dim mm As Single = px / g.DpiX * MillimetersPerInch ' X direction.
g.Dispose()
MsgBox(CStr(mm))
///