[Interest] QWindow::fromWinId - argument type on platform OS X

[Roland Winklmeier]

Hi Gabriel,

thanks for your answer. This clarifies the second point in the
documentation "Creates a local representation of a window created by
another process or by using native libraries below Qt.". But am I right
with my assumption, that the first statement "... created by another
process ... " is not supported on OS X? I cannot imagine a way to get a
valid NSView* from a different process.

Cheers


2014/1/8 deDietrich Gabriel <Gabriel.deDietrich at digia.com>

> On Jan 7, 2014, at 10:26 PM, Roland Winklmeier <
> roland.m.winklmeier at gmail.com> wrote:
>
> > Hi all,
> >
> > I have a quick question about the usage of the static method
> QWindow::fromWinId. What exactly do I have to pass to the application to
> make it work? I figured it already out for windows and linux/xcb, but I'm
> puzzled about OS X.
> > My first guess was it is the cocoa window ID, but passing it made the
> application crash immediatly. After that I had a look into the cocoa QPA
> plugin and it casts the WId to a NSView pointer. The guys in #macdev said
> this will probably never work.
> >
> > So can anybody explain me, how this is working on OS X?
>
>
> Hi Roland,
>
> WId is NSView* in the Cocoa QPA world. This is what QCocoaWindow::winId()
> returns when called by QWindow::winId().
>
> That means that, on Mac, we use NSView as the native window class,
> including for top-level windows.
>
> Best regards,
>
> Dr. Gabriel de Dietrich
> Senior Software Developer
> qt.digia.com
>
>
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