In the following sample, please try to move another app over the buttonbar. You should see that the buttonbar background become temporarily white as the covering window moves:
EMG
#include "Fivewin.ch"
FUNCTION MAIN()
LOCAL oDlg
DEFINE DIALOG oDlg;
SIZE 1000, 600
ACTIVATE DIALOG oDlg;
ON INIT TOOLBAR( oDlg );
CENTER
RETURN NIL
STATIC FUNCTION TOOLBAR( oDlg )
LOCAL i
DEFINE BUTTONBAR OF oDlg 2007
FOR i = 1 TO 35
DEFINE BUTTON OF oDlg:oBar;
FILE "C:\FWH\BITMAPS\OPEN.BMP"
NEXT
RETURN NILEMG
