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21.18. The Toplevel Widget

Create a toplevel widget, displayed independently from the main window with the same decoration as the window system, using the Toplevel method.

The standard configuration options that apply to Toplevel are: -background, -bg, -borderwidth, -bw, -cursor, -height, -highlightbackground, -highlightcolor, -highlightthickness, -relief, -takefocus, and -width.

Other options are:

-class => name
The class associated with the Toplevel widget.

-colormap => \$window
Specifies another window to share the colormap with. You can point to another window or use the value new to specify a new colormap. Default is undef.

-screen => screen
The screen to place the toplevel widget on.

-visual => type n
For the X Window System, changes the depth of colors.

21.18.1. Toplevel Methods

In addition to cget and configure, the following methods are supported by the Toplevel widget. Note that since the MainWindow is a Toplevel widget, each of these methods applies to the MainWindow as well.

aspect
Returns the constraints to the aspect of the window. The four-item list returned corresponds to the minimum width, the minimum height, the maximum width, and the maximum height.

client
Assigns a name to the toplevel window.

colormapwindows
For the X Window System, passes a list of windows to the window manager that have private colormaps. Controls the WM_COLORMAP_WINDOWS property.

command
For the X Window System, returns the command used to start the application.

deiconify
Displays an iconified window.

focusmodel
Gives up the keyboard focus to another window.

frame
Returns the ID of the parent widget as a hexadecimal string.

geometry
For the X Window System, gets the geometry of the Toplevel widget.

grid
Changes the size of the Toplevel's grid.

group
Makes the widget the group leader of a set of related windows.

iconbitmap
Identifies a bitmap to use as an icon when the window is iconified.

iconify
Iconifies the window.

iconmask
Specifies a mask for the icon bitmap.

iconname
Assigns text to be associated with the icon.

iconposition
Specifies a position for the icon on the desktop.

iconwindow
Specifies a widget to use in place of an icon when iconified.

maxsize
Specifies the largest size for the window.

minsize
Specifies the smallest size for the window.

overrideredirect
Removes window decorations from the window.

positionfrom
Returns either program or user to tell you whether the user or window manager requested its current position.

protocol
Given one of the window managers WM_DELETE_WINDOW, WM_SAVE_YOURSELF, or WM_TAKE_FOCUS, allows you to define a callback to execute when an associated event is detected.

resizable
Takes Boolean values representing whether the window can be resized in width and height, respectively.

sizefrom
Returns either program or user to tell you whether the user or window manager requested its current size.

state
Returns normal, iconic, or withdrawn, indicating the current state of the window.

title
Changes the title at the top of the window.

transient
Indicates to the window manager that the window is transient.

withdraw
Makes the window nonvisible.



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