Tk_FreeXId - make X resource identifier available for reuse
#include <tk.h> Tk_FreeXId(display, id)
Tk_FreeXId(3tk) Tk Library Procedures Tk_FreeXId(3tk)
______________________________________________________________________________
NAME
Tk_FreeXId - make X resource identifier available for reuse
SYNOPSIS
#include <tk.h>
Tk_FreeXId(display, id)
ARGUMENTS
Display *display (in) Display for which id was allocated.
XID id (in) Identifier of X resource (window, font,
pixmap, cursor, graphics context, or
colormap) that is no longer in use.
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DESCRIPTION
The default allocator for resource identifiers provided by Xlib is very
simple-minded and does not allow resource identifiers to be re-used.
If a long-running application reaches the end of the resource id space,
it will generate an X protocol error and crash. Tk replaces the
default id allocator with its own allocator, which allows identifiers
to be reused. In order for this to work, Tk_FreeXId must be called to
tell the allocator about resources that have been freed. Tk automati-
cally calls Tk_FreeXId whenever it frees a resource, so if you use pro-
cedures like Tk_GetFont, Tk_GetGC, and Tk_GetPixmap then you need not
call Tk_FreeXId. However, if you allocate resources directly from
Xlib, for example by calling XCreatePixmap, then you should call
Tk_FreeXId when you call the corresponding Xlib free procedure, such as
XFreePixmap. If you do not call Tk_FreeXId then the resource identi-
fier will be lost, which could cause problems if the application runs
long enough to lose all of the available identifiers.
KEYWORDS
resource identifier
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | runtime/tk-8 |
+---------------+------------------+
|Stability | Uncommitted |
+---------------+------------------+
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from https://source-
forge.net/projects/tcl/files/Tcl/8.6.7/tk8.6.7-src.tar.gz/download.
Further information about this software can be found on the open source
community website at https://www.tcl.tk/.
Tk 4.0 Tk_FreeXId(3tk)