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oWin:Refresh( <lErase> ) -> <lSuccess>
------------------------------------------------------------------------------
PARAMETER:
<lErase> determines whether or not the background of client area
should be erased when the repainting of the window begins.
Default is TRUE, which erases the background
DESCRIPTION:
The ::Refresh() method sends a message to Windows that the client
area of the window should be repainted ( InvalidateRect() ).
This may be necessary if some part of the client area are overwritten or
there are changes in the background of the client area.
If no parameters are passed, the background of the client area will
be erased before the window is repainted.
!seealso:func1.eho:"InvalidateRect" "Update"
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