Difference between revisions of "X11 locking"
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| − | + | [[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_PLUTO.txt | ||
| + | |||
| + | http://svn.plutohome.com/pluto/trunk/src/docs/X11_NOTES.txt | ||
Latest revision as of 19:51, 24 February 2008
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.
