Here is a simple example:

Public Interrupt As Boolean

Public Sub TEST()
Interrupt = False
For i = 1 To 30000
If Interrupt Then Exit For
Range("A1").Value = i
DoEvents
Next i
End Sub

Sub Button1_Click()
Interrupt = True
End Sub

Key elements:
- Public variable that gets set to a particular value when button pressed
- In your sub containing the loop you need to "preset" the value of the
variable so the loop will run
- Important! Include a DoEvents statement inside the loop. Without it the
button press will not be detected until the loop ends.
- Have some way of terminating the loop when the value of the public
variable gets set by the button. Above I use an Exit For statement, but
personally I don't like that approach (I am an old-time structured
programmer). I prefer to do a While loop in the form of:
While .... And Not Interrupt.
' loop code
Wend
-
--
- K Dales


"Moiz, ABAC UK" wrote:

Is there a way to create a button that stops a series of "iterations" - the
equivalent of CTRL+BREAK

how?

Moiz