>I want to change the backcolor of the currently selected row in a grid to highlight it.

make a variable available to the grid with the recno() of the currently highlighted row, say _currec=recno()...

in the DynamicBackColor property of each column in the grid place the following code:

IIF(recno()<>_currec,RGB(255,255,255),RGB(192,220,192))

in the AfterRowColChange method of the grid the following code:

_currec = recno()
this.refresh

change the RGB(192,220,192) to whatever color value you prefer for the background color.