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CentOS 7.0 - man page for tk_getoption (centos section 3)

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Tk_GetOption(3) 		      Tk Library Procedures			  Tk_GetOption(3)


       Tk_GetOption - retrieve an option from the option database

       #include <tk.h>

       Tk_GetOption(tkwin, name, class)

       Tk_Window tkwin (in)	      Token for window.

       const char *name (in)	      Name of desired option.

       const char *class (in)	      Class  of desired option.  Null means there is no class for
				      this option;  do lookup based on name only.

       This procedure is invoked to retrieve an option from the database associated with  tkwin's
       main  window.   If there is an option for tkwin that matches the given name or class, then
       it is returned in the form of a Tk_Uid.	If multiple options match name	and  class,  then
       the highest-priority one is returned.  If no option matches, then NULL is returned.

       Tk_GetOption  caches  options related to tkwin so that successive calls for the same tkwin
       will execute much more quickly than successive calls for different windows.

       class, name, option, retrieve

Tk										  Tk_GetOption(3)
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