View source for X11 locking

[[Category: Programmer's Guide]]
== Using X11 locking in Orbiter ==
In OrbiterLinux there are 2 new functions:
X_LockDisplay() and X_UnlockDisplay(); which should be used
before and after calling X11/SDL functions which update the display, or change the mouse position

Example:
    class_name::some_drawing_function()
    {
        OrbiterLinux *pOrbiterLinux = dynamic_cast<OrbiterLinux *>(pOrbiter);
        // or, better, make a member variable from pOrbiterLinux,
        // and initialize it before this function would be called
        
        // non-critical code
        
        if (pOrbiterLinux)
            pOrbiterLinux->X_LockDisplay();
        
        // critical code here
        
        if (pOrbiterLinux)
            pOrbiterLinux->X_UnlockDisplay();
        
        // non-critical code
    }

The dynamic_cast should return NULL only if you are not compiling the Linux version.

== Links to documents ==
http://svn.plutohome.com/pluto/trunk/src/docs/X11_PLUTO.txt

http://svn.plutohome.com/pluto/trunk/src/docs/X11_NOTES.txt