Difference between revisions of "X11 locking"
From LinuxMCE
Rwilson131 (Talk | contribs) m |
|||
| (5 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
| − | + | [[Category: Programmer's Guide]] | |
== Using X11 locking in Orbiter == | == Using X11 locking in Orbiter == | ||
| − | + | In OrbiterLinux there are 2 new functions: | |
| − | + | ||
X_LockDisplay() and X_UnlockDisplay(); which should be used | 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 | before and after calling X11/SDL functions which update the display, or change the mouse position | ||
| − | + | Example: | |
| − | class_name::some_drawing_function() | + | 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. | The dynamic_cast should return NULL only if you are not compiling the Linux version. | ||
| Line 30: | Line 29: | ||
== Links to documents == | == 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 | 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.
