Difference between revisions of "Hacker Guide/Variables"
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(Created page with "== Introduction == Vlc have a very powerful "object variable" infrastructure useful for many things. == Usage == var_Get will get the value if the variable exist (error ove…") |
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== Introduction == | == Introduction == | ||
| − | + | {{VLC}} has a powerful "object variable" infrastructure, that can be used to pass information between modules. | |
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| + | It can be compared to an [http://en.wikipedia.org/wiki/Observer_pattern Observer Pattern]. | ||
== Usage == | == Usage == | ||
Revision as of 20:59, 21 March 2011
Introduction
VLC media player has a powerful "object variable" infrastructure, that can be used to pass information between modules.
It can be compared to an Observer Pattern.
Usage
var_Get will get the value if the variable exist (error overwise).
var_Inherit will get the default value or the one setted by the parent object.
var_CreateGet will create the variable and the get the default value if the variable wasn't already created. If the varible does exist before the call it will get the current value (and increment the refcount).
A variable must be created if you want to add a callback or change the value (with var_Set) of a variable
