Trapping the "cancel" button on File Dialog Window

[xcoder]

How do I trap the "cancel" and "red x" buttons on a File Dialog Window?

[tsh73]

from a Help file

When the user selects a filename, the resulting full path specification will be placed into receiverVar$. This parameter contains an empty string if the user canceled the Filedialog.

So if returned string is empty, that means user pressed Cancel button/ ESC/ redX in the corner.

filedialog "Open text file", "*.txt", fileName$
  if fileName$<>"" then
   print "you selected a file"
    print fileName$
  else
    print "User cancelled dialog"
  end if



[xcoder]

The given code does not prevent a GUI program from showing "file handles not closed" and generating a Error.

[tsh73]

Given code does not open a thing, so it has nothing to close.
How about posting your code?
Folks might spot the error.

[Rod]

Yes, if the programmer opens a resource it is up to the programmer to close thst resource with trapclose or close. If you leave a window open and quit or crash without closing it you will get an error. But showing us your code is the fastest fix.

[xxgeek]

a simple example:

open "test" for window as #testWindow
#testWindow "trapclose [quit]"

filedialog "Open \ Select a File (.bas) ", DefaultDir$; "\*.bas", fname$
    if fname$ = "" then notice "No file selected"
print fname$


[quit]
close #testWindow
end


[xcoder]

Now select the "cancel" button or the red "X" button on FileDialog and see what happens!

[xxgeek]

Is this what you're looking for? No notice, and leave the window open?

Without seeing your code it's a shot in the dark.


open "test" for window as #testWindow
#testWindow "trapclose [quit]"

filedialog "Open \ Select a File (.bas) ", DefaultDir$; "\*.bas", fname$
    if fname$ = "" then doNothing = 1
wait


[quit]
close #testWindow
end

[xcoder]

That is it exactly. I am writing a "file pass" program.

[xxgeek]

Oct 21, 2022 0:40:05 GMT xcoder said:

That is it exactly. I am writing a "file pass" program.

You mean like a file sharing app?

[xcoder]

I figured it out already. Full code will be posted soon.