Off the top of my head.

Add the following Props/Methods to the form:

Properties:
GridOrigTop
GridOrigLeft
GridOrigHeight
GridOrigWidth
GridMaxed

Method:
ZoomGrid

** Code for ZoomGrid
with thisform
  if .GridMaxed
    .MyGrid.Top = .GridOrigTop
    .MyGrid.Left = .GridOrigLeft
    .MyGrid.Height = .GridOrigHeight
    .MyGrid.Width = .GridOrigWidth
  else
    .MyGrid.Top = 0
    .MyGrid.Left = 0
    .MyGrid.Height = .Height
    .MyGrid.Width = .Width
  endif

  .GridMaxed = not .GridMaxed
endwith

Now just call Thisform.ZoomGrid in the click event of the button.

Note: You may want to subtract a couples pixels from the form height and width and add a couple to the Top and left to make it look right.

hth

>Hi. VFP 7 user. How would I grow a grid to full-form size (by the user clicking on a button) and then shrink it back down to normal size (the same way).
>
>Thanks, Randy