[Qt-interest] Howto grab window from X11 display other than applications display

[Bill Crocker]

Wilhelm wrote:
> Am 25.05.2011 13:00, schrieb venkat reddy:
>> try below code
>>
>> QPixmap screenPixmap=QPixmap();
>> QDesktopWidget* dektop=QApplication::desktop();
> 
> this gets the display the application ist connected to.
> 
> But I wanted e.g. localhost:1.0
>

You will probably need to spawn a child process
which connects (-display command line option)
to this different display and then does the deed.

This from the QApplication class doc.

     The X11 version of Qt supports some traditional X11 command line options:
         * -display display, sets the X display (default is $DISPLAY).

Bill

>> screenPixmap=QPixamp::grabWidget(dektop,dektop->rect());
>>
>>
>> -- 
>> Thanks&Regards,
>> Venkat Reddy pasya
>> Senior Software Engineer.
>> Sling Media Pvt Ltd.
>> Bangalore
>> Ph: 9620418382
>>
>>
>>
>> On Wed, May 25, 2011 at 3:53 PM, Wilhelm <wilhelm.meier at fh-kl.de
>> <mailto:wilhelm.meier at fh-kl.de>> wrote:
>>
>>     Am 25.05.2011 00:27, schrieb Andreas Pakulat:
>>     > On 24.05.11 21:03:02, Wilhelm wrote:
>>     >> Hi,
>>     >>
>>     >> with QPixmap::grabWindow() i can grab the contents of windows on the
>>     >> applications display, say localhost:0.0.
>>     >>
>>     >> How can my application (connected to localhost:0.0) grab windows from
>>     >> another display e.g. localhost:1.0 ?
>>     >>
>>     >> I tried to use the code of QPixmap but with no luck due to the
>>     private
>>     >> headers in Qt.
>>     >
>>     > No idea wether X11 allows this at all, but you'll have to dive
>>     into the
>>     > X11 api to do this anyway. Qt does not have any way to do this.
>>
>>     Ok, thank you.
>>     Now got it working using the conversion code from QPixmap_p and
>>     XGetImage().
>>
>>     >
>>     > Andreas
>>     >
>>     > _______________________________________________
>>     > Qt-interest mailing list
>>     > Qt-interest at qt.nokia.com <mailto:Qt-interest at qt.nokia.com>
>>     > http://lists.qt.nokia.com/mailman/listinfo/qt-interest
>>
>>
>>     --
>>     Wilhelm
>>
>>     _______________________________________________
>>     Qt-interest mailing list
>>     Qt-interest at qt.nokia.com <mailto:Qt-interest at qt.nokia.com>
>>     http://lists.qt.nokia.com/mailman/listinfo/qt-interest
>>
>>
>>
>>
> 
>