Tk_PathName man page on OpenMandriva

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Tk_Name(3)		     Tk Library Procedures		    Tk_Name(3)

______________________________________________________________________________

NAME
       Tk_Name,	 Tk_PathName, Tk_NameToWindow - convert between names and win‐
       dow tokens

SYNOPSIS
       #include <tk.h>

       Tk_Uid
       Tk_Name(tkwin)

       char *
       Tk_PathName(tkwin)

       Tk_Window
       Tk_NameToWindow(interp, pathName, tkwin)

ARGUMENTS
       Tk_Window tkwin (in)		  Token for window.

       Tcl_Interp *interp (out)		  Interpreter to use for error report‐
					  ing.

       const char *pathName (in)	  Character   string  containing  path
					  name of window.
_________________________________________________________________

DESCRIPTION
       Each window managed by Tk has two names, a short name that identifies a
       window  among children of the same parent, and a path name that identi‐
       fies the window uniquely among all the windows belonging	 to  the  same
       main  window.   The  path  name is used more often in Tk than the short
       name;  many commands, like bind, expect path names as arguments.

       The Tk_Name macro returns a window's short name, which is the  same  as
       the  name  argument  passed to Tk_CreateWindow when the window was cre‐
       ated.  The value is returned as a Tk_Uid, which may be used just like a
       string  pointer but also has the properties of a unique identifier (see
       the manual entry for Tk_GetUid for details).

       The Tk_PathName macro returns a	hierarchical  name  for	 tkwin.	  Path
       names  have  a  structure  similar  to file names in Unix but with dots
       between elements instead of slashes:  the main window for  an  applica‐
       tion has the path name “.”; its children have names like “.a” and “.b”;
       their children have names like “.a.aa” and “.b.bb”; and so on.  A  win‐
       dow  is	considered to be a child of another window for naming purposes
       if the second window was named as the first window's  parent  when  the
       first  window was created.  This is not always the same as the X window
       hierarchy.  For example, a pop-up is created as a  child	 of  the  root
       window,	but  its  logical  parent  will usually be a window within the
       application.

       The procedure Tk_NameToWindow returns the token for a window given  its
       path  name  (the pathName argument) and another window belonging to the
       same main window (tkwin).  It normally returns a token  for  the	 named
       window,	but  if	 no such window exists Tk_NameToWindow leaves an error
       message in interpreter interp's result and  returns  NULL.   The	 tkwin
       argument	 to  Tk_NameToWindow  is  needed  because  path names are only
       unique within a single application hierarchy.  If, for example, a  sin‐
       gle process has opened two main windows, each will have a separate nam‐
       ing hierarchy and the same path name might appear in each of the	 hier‐
       archies.	  Normally  tkwin is the main window of the desired hierarchy,
       but this need not be the case:  any window in the desired hierarchy may
       be used.

KEYWORDS
       name, path name, token, window

Tk								    Tk_Name(3)
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