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#1161 menu -type menubar breaks kbd navigation
Keyboard navigation to menus with <Alt-Keypress> raises
an error if the menu is configured with -type menubar,
as the following script demonstrates:
#--cut here
package require Tk
menu .menubar -type menubar
menu .file
.file add command -label Exit -underline 1 -command
[list destroy .]
.menubar add cascade -label File -underline 0 -menu
.file
. configure -menu .menubar
pack [label .l -text "Press Alt-F"] \ -expand true -fill both -padx 200 -pady 200
#-- cut here
This raises an error:
grab failed: window not viewable
grab failed: window not viewable
while executing
"grab -global $w"
(procedure "tk::TraverseToMenu" line 21)
invoked from within
"tk::TraverseToMenu . f"
(command bound to event)
Without '-type menubar', keyboard navigation works OK.
Logged In: YES
user_id=92123
I agree your demo script creates the same error for me.
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user_id=68433
I suspect that the correct fix for this problem is "Don't Do
That" -- that is, users should not specify [menu ... -type
menubar] in the first place.
menu(n) sez:
Command-Line Name:-type [...]
This option can be one of menubar, tearoff, or
normal, and is set when the menu is created. [...] this
does not affect the menu widget's behavior. This is used
by the cloning mechanism *and is not normally set outside
of the Tk library*.
(emphasis added). Can anyone confirm or deny this?
Logged In: YES
user_id=68433
> I suspect that the correct fix for this problem is "Don't
Do That" [...]
After further investigation, I'm pretty sure this is the
right fix. The menu '-type' option should only be set by
the Tk internals, not in user code.
Closing the bug.