NAME

winfo − Return window-related information

SYNOPSIS

winfo option ?arg arg ...? 

DESCRIPTION

The winfo command is used to retrieve information about windows managed by Tk.  It can take any of a number of different forms, depending on the option argument.  The legal forms are:

winfo atom name
Returns a decimal string giving the integer identifier for the atom whose name is name.  If no atom exists with the name name then a new one is created. 

winfo atomname id
Returns the textual name for the atom whose integer identifier is id.  This command is the inverse of the winfo atom command.  Generates an error if no such atom exists. 

winfo children window
Returns a list containing the path names of all the children of window.  Top-level windows are returned as children of their logical parents. 

winfo class window
Returns the class name for window. 

winfo containing rootX rootY
Returns the path name for the window containing the point given by rootX and rootY.  RootX and rootY are specified in screen units (i.e.  any form acceptable to Tk_GetPixels) in the coordinate system of the root window.  If no window in this application contains the point then an empty string is returned.  In selecting the containing window, children are given higher priority than parents and among siblings the highest one in the stacking order is chosen. 

winfo fpixels window number
Returns a floating-point value giving the number of pixels in window corresponding to the distance given by number.  Number may be specified in any of the forms acceptable to Tk_GetScreenMM, such as “2.0c” or “1i”.  The return value may be fractional;  for an integer value, use winfo pixels. 

winfo geometry window
Returns the geometry for window, in the form widthxheight+x+y.  All dimensions are in pixels. 

winfo height window
Returns a decimal string giving window’s height in pixels. 

winfo id window
Returns a hexadecimal string indicating the X identifier for window. 

winfo interps
Returns a list whose members are the names of all Tcl interpreters (e.g. all Tk-based applications) currently registered for the display of the invoking application.

winfo ismapped window
Returns 1 if window is currently mapped, 0 otherwise. 

winfo name window
Returns window’s name (i.e. its name within its parent, as opposed to its full path name).  The command winfo name . will return the name of the application. 

winfo parent window
Returns the path name of window’s parent, or an empty string if window is the main window of the application. 

winfo pathname id
Returns the path name of the window whose X identifier is id.  Id must be a decimal, hexadecimal, or octal integer and must correspond to a window in the invoking application. 

winfo pixels window number
Returns the number of pixels in window corresponding to the distance given by number.  Number may be specified in any of the forms acceptable to Tk_GetPixels, such as “2.0c” or “1i”.  The result is rounded to the nearest integer value;  for a fractional result, use winfo fpixels. 

winfo reqheight window
Returns a decimal string giving window’s requested height, in pixels.  This is the value used by window’s geometry manager to compute its geometry. 

winfo reqwidth window
Returns a decimal string giving window’s requested width, in pixels.  This is the value used by window’s geometry manager to compute its geometry. 

winfo rootx window
Returns a decimal string giving the x-coordinate, in the root window of the screen, of the upper-left corner of window’s border (or window if it has no border). 

winfo rooty window
Returns a decimal string giving the y-coordinate, in the root window of the screen, of the upper-left corner of window’s border (or window if it has no border). 

winfo screen window
Returns the name of the screen associated with window, in the form displayName.screenIndex. 

winfo screencells window
Returns a decimal string giving the number of cells in the default color map for window’s screen. 

winfo screendepth window
Returns a decimal string giving the depth of the root window of window’s screen. 

winfo screenheight window
Returns a decimal string giving the height of window’s screen, in pixels. 

winfo screenmmheight window
Returns a decimal string giving the height of window’s screen, in millimeters. 

winfo screenmmwidth window
Returns a decimal string giving the width of window’s screen, in millimeters. 

winfo screenvisual window
Returns one of the following strings to indicate the default visual type for window’s screen: directcolor, grayscale, pseudocolor, staticcolor, staticgray, or truecolor. 

winfo screenwidth window
Returns a decimal string giving the width of window’s screen, in pixels. 

winfo toplevel window
Returns the path name of the top-level window containing window. 

winfo width window
Returns a decimal string giving window’s width in pixels. 

winfo x window
Returns a decimal string giving the x-coordinate, in window’s parent, of the upper-left corner of window’s border (or window if it has no border). 

winfo y window
Returns a decimal string giving the y-coordinate, in window’s parent, of the upper-left corner of window’s border (or window if it has no border). 
 

KEYWORDS

atom, children, class, geometry, height, identifier, information, interpreters, mapped, parent, path name, screen, width, window

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