home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
X User Tools
/
X User Tools (O'Reilly and Associates)(1994).ISO
/
sun4c
/
archive
/
tcltk.z
/
tcltk
/
man
/
cat3
/
SetClass.3
< prev
next >
Wrap
Text File
|
1994-09-20
|
2KB
|
67 lines
Tk_SetClass(3) Tk Library Procedures
_________________________________________________________________
NAME
Tk_SetClass, Tk_Class - set or retrieve a window's class
SYNOPSIS
#include <tk.h>
Tk_SetClass(_t_k_w_i_n, _c_l_a_s_s)
Tk_Uid
Tk_Class(_t_k_w_i_n)
ARGUMENTS
Tk_Window _t_k_w_i_n (in) Token for window.
char *_c_l_a_s_s (in) New class name for window.
_________________________________________________________________
DESCRIPTION
Tk_SetClass is called to associate a class with a particular
window. The _c_l_a_s_s string identifies the type of the window;
all windows with the same general class of behavior (button,
menu, etc.) should have the same class. By convention all
class names start with a capital letter, and there exists a
Tcl command with the same name as each class (except all in
lower-case) which can be used to create and manipulate win-
dows of that class. A window's class string is initialized
to NULL when the window is created.
For main windows, Tk automatically propagates the name and
class to the WM_CLASS property used by window managers.
This happens either when a main window is actually created
(e.g. in Tk_MakeWindowExist), or when Tk_SetClass is called,
whichever occurs later. If a main window has not been
assigned a class then Tk will not set the WM_CLASS property
for the window.
Tk_Class is a macro that returns the current value of
_t_k_w_i_n's class. The value is returned as a Tk_Uid, which may
be used just like a string pointer but also has the proper-
ties of a unique identfier (see the manual entry for
Tk_GetUid for details). If _t_k_w_i_n has not yet been given a
class, then Tk_Class will return NULL.
KEYWORDS
class, unique identifier, window, window manager
Tk 1