GetClientSize( ¤tclientwidth , ¤tclientheight ) ;
if ( clientwidth == -1 )
clientwidth = currentclientwidth ;
if ( clientheight == -1 )
clientheight = currentclientheight ;
GetSize( ¤twidth , ¤theight ) ;
GetClientSize( ¤tclientwidth , ¤tclientheight ) ;
if ( clientwidth == -1 )
clientwidth = currentclientwidth ;
if ( clientheight == -1 )
clientheight = currentclientheight ;
GetSize( ¤twidth , ¤theight ) ;