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Re: X11 macOSX woes [message #39583 is a reply to message #39582]

Thu, 27 May 2004 11:59

MKatz843
Messages: 98
Registered: March 2002

Member

Might you be trying to plot or draw into this window after it has been
closed? You didn't say what kind of an X11 window it is. I imagine
with window with your IDL session is open, or else how could you read
the error message?

It's a pain, but you could put an explicit line in the code to check
if the window is valid before drawing to it. For direct-graphics
windows, I made the function below, window_valid(). For object
graphics, you could test the IDLgrWindow object. For widget programs,
there are two things you can do. First, test if the widget ID is still
valid with widget_info(ID, /VALID_ID); also add a cleanup routine so
that if a widget is closed, it knows to clear the event queue, free
pointers, and destroy objects properly. If you throw these tricks in,
at least you can help identify the problem by telling the program to
alert you when one of the tests fails.

M. Katz

; IDL function: window_valid.pro
;
; This function checks to make sure the given window number is valid,
; and returns 1=valid or 0=not valid.
;
function window_valid, num, window_state=window_state
device, window_state=window_state
n = n_elements(window_state)
return, (num GE 0) and (num LT n) and window_state(0 > num < (n-1))
end

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[Message index]

		Re: X11 macOSX woes By: btt on Fri, 28 May 2004 07:58
		Re: X11 macOSX woes By: Karl Schultz on Fri, 28 May 2004 07:52
		Re: X11 macOSX woes By: btt on Fri, 28 May 2004 06:58
		Re: X11 macOSX woes By: Karl Schultz on Thu, 27 May 2004 13:40
		Re: X11 macOSX woes By: Karl Schultz on Thu, 27 May 2004 12:37
		Re: X11 macOSX woes By: MKatz843 on Thu, 27 May 2004 11:59
		Re: X11 macOSX woes By: Kenneth P. Bowman on Wed, 26 May 2004 18:13

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