I suspected the problem could be on the libXt since the XtRealizeWidget symbol is defined in that library. I looked at it using nm but all seemed well: $ nm -D /usr/lib/libXt.so |grep XtRealizeWidget 02b39870 T XtRealizeWidget The “T” means the symbol is in the text (code) section of the object files that compose the … Read more
Try to install libxt-dev using: sudo apt-get install libxt-dev This is from http://vtk.1045678.n5.nabble.com/cmake-error-when-building-vtk-6-0-0-on-ubuntu-12-04-td5722859.html. And at least it works for me, and my OS version is Ubuntu 14.04 LTS.
I found the answer here. Basically gnuplot needs to be reinstalled as: brew reinstall gnuplot –with-x11 This page also helps with troubleshooting Octave installation on Mavericks.
I am seeing this error message when I run Firefox headless through selenium using xvfb. It turns out that the message was a red herring for me. The message is only a warning, not an error. It is not why Firefox was not starting correctly. The reason that Firefox was not starting for me was … Read more
No. This is why most UI frameworks (Gtk, KDE, etc) use custom main loops to be able to listen for more event sources. Internally, XNextEvent uses a socket, so it calls select() to know when input is available. Call ConnectionNumber(display) to get the file descriptor that you need to pass select() That allows you to … Read more
export XAUTHORITY=$HOME/.Xauthority This fix worked for me
This is possible using VirtualGL in a server with hardware acceleration. Basically just configure the server appropiately, then either on the same machine or on a machine in the same network, run export DISPLAY=<your xvfb display> vglrun <your_app> This will have the following advantages: 1) your app will render using virtualGL, which will use the … Read more
Your program works here. My guess is you have another modifier active, such as NumLock. GrabKey only works on the exact modifier mask. For example here is some (GPL) code from metacity window manager /* Grab/ungrab, ignoring all annoying modifiers like NumLock etc. */ static void meta_change_keygrab (MetaDisplay *display, Window xwindow, gboolean grab, int keysym, … Read more
There’s an xterm control sequence for this: \e]11;?\a (\e and \a are the ESC and BEL characters, respectively.) Xterm-compatible terminals should reply with the same sequence, with the question mark replaced by an X11 color name, e.g. rgb:0000/0000/0000 for black.