Russell,

I settled on these two methods:

procedure MouseDown
LPARAMETERS nButton, nShift, nXCoord, nYCoord

with this
   * initialize items that will be tested in MouseUp
   .mnColumnOrder = this.parent.ColumnOrder
   .mnColumnWidth = this.parent.Width
endwith
endproc

procedure MouseUp
LPARAMETERS nButton, nShift, nXCoord, nYCoord

with this
   * check to see if this was a resize or move
   .mlColumnMoved = ( this.parent.ColumnOrder != .mnColumnOrder )
   .mlColumnSized = ( this.parent.Width != .mnColumnWidth )
endwith
endproc

Then in Click() you can test if it was moved or sized.

>I am using the click event on a grid column header to index it on its rowsource. However resizing the column also tends to click the grid header and activate the indexing routine.
>How can I stop this?