Refreshes the given window. This function must be used instead
of BeginRefresh(), if gadtools-gadgets are used. When you are
finished with refreshing the window, you must call GT_EndRefresh().
INPUTS
win
window to refresh
RESULT
NOTES
Due to the internal structure of gadtools, it is not possible
to use WFLG_NOCAREREFRESH with windows, which use gadtools-
gadgets.
You should simple rendering functions between GT_BeginRefresh() and
GT_EndRefresh() only. Do not render or change any gadgets.
EXAMPLE
case IDCMP_REFRESHWINDOW:
GT_BeginRefresh(mywin);
GT_EndRefresh(mywin, TRUE);