[PyQt] QLineEdit vs. menu keyboard shortcuts

[Nathan Weston]

On 6/29/2011 6:16 PM, Baz Walter wrote:
> On 29/06/11 18:57, Nathan Weston wrote:
>> On 6/29/2011 1:32 PM, Baz Walter wrote:
>>> going back to your earlier example of dragging in the line-edit to
>>> change its value: all you need to do is clearFocus() when the drag
>>> starts and setFocus() when the drag ends. that way, whilst the drag is
>>> in progress, the line-edit's shortcuts won't work, but your global
>>> shortcuts will.
>>>
>>> if that's not what you want, please try to make it clear what you do
>>> want (i.e. with a working example).
> [snip]
>> Now, when the widget is in its non-editable state, and the user hits
>> Ctrl-Z, I want it to trigger the Undo action on the Edit menu.
>> Unfortunately, QLineEdit intercepts the Ctrl-Z keystroke and does
>> nothing (because it's not editable).
>
> the example you posted earlier works (i.e. Ctrl+Z prints 'action') if
> the Foo widget has been set as read-only.
>
> (nb: the setShortcutContext line also needs to be commented out)
>

Interesting... it works as you say on my Linux machine at home, but not 
on my Windows machine at work. The Windows machine has Qt 4.6.2, I don't 
know about the Linux machine off the top of my head. What platform/Qt 
version are you testing on?

>> I can't call clearFocus() at the end of the drag, because this would
>> break the Up/Down arrow shortcuts.
>
> call clearFocus() at the *start* of the drag, setFocus() at the *end*.

I don't see how that would help... after the drag, the line-edit will 
have focus again, and will eat the Ctrl-Z shortcut.

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