Close all but 1 QuickWin window

[Intel_C_Intel]

I have a QuickWin program in which I would like to implement a "Close All" command--except that I want to leave one window open, unit 10. The other unit numbers are not known, although there's only one in the range 20-29, one in the range 30-39, .... Now, this works

  DO I = 11, 99 
    CLOSE(I) 
  ENDDO

but I need to deallocate arrays according to what unit is actually closed.

I thought something like the following would be helpful, but GetUnitQQ() always returned -1.

NextUnit = GetUnitQQ(GetWindow(GetHwndQQ(10), GW_HWNDNEXT))

Does anyone know how to fix this up? Otherwise I'm left with restoring and minimizing window unit 10 whenever it gets the focus, and that seems quite clunky!

  INTEGER :: I, nUnit, NextWin 
 
! Close all child windows except LUN=10 
  I = FOCUSQQ(10) 
  nUnit = NextWin(10) 
  DO WHILE(nUnit .NE. 10) 
    CALL MY_CLOSE_ROUTINE(nUnit) 
    I = INQFOCUSQQ(nUnit) 
    IF (nUnit .EQ. 10) nUnit = NextWin(10) 
  ENDDO 
	: 
	: 
INTEGER FUNCTION NextWin(RefWin) 
  USE DFLIB 
  IMPLICIT NONE 
  INTEGER, INTENT(IN) :: RefWin 
  INTEGER :: I, nWin 
  TYPE (QWINFO) :: wc 
 
  wc%type = QWIN$RESTORE 
  I = SetWSizeQQ(RefWin,wc)  
  wc%type = QWIN$MIN 
  I = SetWSizeQQ(RefWin,wc)  
  I = INQFOCUSQQ(nWin) 
  IF (nWin .EQ. RefWin) THEN 
    wc%type = QWIN$RESTORE 
    I = SetWSizeQQ(RefWin,wc)  
  ENDIF 
  NextWin = nWin 
END FUNCTION NextWin 
 

I appreciate what a helpful forum this is!
Dick

[Steven_L_Intel1]

You can use INQUIRE (UNIT=n,OPENED=logicalvar) to see if a unit is open, and then process accordingly.

Steve

[Intel_C_Intel]

Ah, but of course! Thank you, Steve.