Tk_GetOption manual page - Library Procedures

## Tcl8.6.1/Tk8.6.1 Documentation > Tk C API, version 8.6.1 > GetOption

### Tcl/Tk Applications | Tcl Commands | Tk Commands | [incr Tcl] Package Commands | SQLite Package Commands | TDBC Package Commands | tdbc::mysql Package Commands | tdbc::odbc Package Commands | tdbc::sqlite3 Package Commands | Thread Package Commands | Tcl C API | Tk C API | [incr Tcl] Package C API | TDBC Package C API

### NAME

Tk_GetOption — retrieve an option from the option database

### SYNOPSIS

#include <tk8.6/tk.h>
Tk_Uid
Tk_GetOption(tkwin, name, class)

### ARGUMENTS

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.

### DESCRIPTION

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.

### KEYWORDS

class, name, option, retrieve
Copyright © 1990 The Regents of the University of California. Copyright © 1994-1996 Sun Microsystems, Inc.