Tk_Name(3TK) Tk Library Procedures Tk_Name(3TK)
__________________________________________________________________________________________________________________________________________________
NAME
Tk_Name, Tk_PathName, Tk_NameToWindow - convert between names and window 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 reporting.
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
identifies 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 application 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 window is considered to be 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 interp->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 single process has opened two main windows, each will have a separate naming
hierarchy and the same path name might appear in each of the hierarchies. 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
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Availability | SUNWTk |
+--------------------+-----------------+
|Interface Stability | Uncommitted |
+--------------------+-----------------+
NOTES
Source for Tk is available on http://opensolaris.org.
Tk Tk_Name(3TK)