Adjust to different Monior/Display Resolution?

I want my application to change size of forms and various controls to accomodate different monitors and different resolutions for the same monitor. I am doing some point plotting, using ScaleMode 7 (Centimeters) for a Picture Box (where I plot points) and ScaleMode 1 (Twips) elsewhere.

Any advice, hints, citations, etcetera would be appreciated.

I am working with VB6. I have Visual Studio & MSDN Library.

First, are above Scale Modes reasonable for my purposes? They seem to work okay, but I have yet to add logic for Display changes.

MSDN shows sample code using Sysinfo1_Displaychanged Event. Example uses Screen.TwipsPerPixelX to decide how to size controls. For my System, TwipsPerPixelX does not change when I change from 640X480 to 1024X768. An experiment suggests that Sysinfo1.WorkAreaWidth changes. Does ScaleMode setting affect these variables?

What affects TwipsPerPixel? How do I check for Display Resolution? How do I detect a Monitor with a different Dot Pitch? Should I worry about Dot Pitch?

Any clues you can give me about Twips, Pixels, Scale Mode, Screen sizes, et cetera would be appreciated.

Thanx

Here's some code off the top of my head, be sure to create a text box named text1 and a timer named timer1.

P.S. Sorry about the bad presentation, I can't remember how to display code.


Dim OldWidth, OldHeight

Private Sub Form_Load()
Text1.Text = Str$(Screen.Width) + "," + Str$(Screen.Height)
OldWidth = Screen.Width
OldHeight = Screen.Height
End Sub

Private Sub Timer1_Timer()
If Screen.Width = OldWidth Then
Text1.Text = Str$(OldWidth) + "," + Str$(OldHeight)
Else
MsgBox ("Screen resized from " + Str$(OldWidth) + ","+_
Str$(OldHeight) + " to" + Str$(Screen.Width) + "," +_
Str$(Screen.Height) + ".")
OldWidth = Screen.Width
OldHeight = Screen.Height
End If
End Sub