Class: Tk::Message

Inherits:
Widget show all
Includes:
Cget, Configure
Defined in:
lib/ffi-tk/widget/message.rb

Overview

Create and manipulate message widgets

A message is a widget that displays a textual string.

A message widget has three special features.

First, it breaks up its string into lines in order to produce a given aspect ratio for the window. The line breaks are chosen at word boundaries wherever possible (if not even a single word would fit on a line, then the word will be split across lines). Newline characters in the string will force line breaks; they can be used, for example, to leave blank lines in the display.

The second feature of a message widget is justification. The text may be displayed left-justified (each line starts at the left side of the window), centered on a line-by-line basis, or right-justified (each line ends at the right side of the window).

The third feature of a message widget is that it handles control characters and non-printing characters specially. Tab characters are replaced with enough blank space to line up on the next 8-character boundary. Newlines cause line breaks. Other control characters (ASCII code less than 0x20) and characters not defined in the font are displayed as a four-character sequence xhh where hh is the two-digit hexadecimal number corresponding to the character. In the unusual case where the font does not contain all of the characters in “0123456789abcdefx” then control characters and undefined characters are not displayed at all.

Constant Summary

Constants included from Cget

Cget::CGET_MAP

Constants included from WM

WM::WM_ATTRIBUTES_HINTS

Instance Attribute Summary

Attributes inherited from Widget

#tk_parent, #tk_pathname

Class Method Summary collapse

Methods included from Cget

#cget, option_hash_to_tcl, option_to_ruby, type_to_ruby

Methods included from Configure

#configure

Methods inherited from Widget

#execute, #execute_only, #focus, #focus_next, #focus_prev, #initialize, #lower, #raise, #to_tcl

Methods included from Pack

configure, forget, info, pack, #pack, #pack_configure, #pack_forget, #pack_info, #pack_propagate, #pack_slaves, propagate, slaves

Methods included from Destroy

destroy, #destroy

Methods included from Bind

bind, #bind, unbind, #unbind

Methods included from Bindtags

bindtags, #bindtags

Methods included from WM

aspect, attributes, client, colormapwindows, command, deiconify, focusmodel, forget, frame, geometry, grid, group, iconbitmap, iconbitmap_default, iconify, iconmask, iconname, iconphoto, iconphoto_default, iconposition, iconwindow, manage, maxsize, minsize, overrideredirect, positionfrom, protocol, resizable, sizefrom, stackorder, state, title, transient, withdraw, #wm_aspect, #wm_aspect=, #wm_attributes, #wm_client, #wm_client=, #wm_colormapwindows, #wm_colormapwindows=, #wm_command, #wm_command=, #wm_deiconify, #wm_focusmodel, #wm_focusmodel=, #wm_forget, #wm_frame, #wm_geometry, #wm_geometry=, #wm_grid, #wm_grid=, #wm_group, #wm_group=, #wm_iconbitmap, #wm_iconbitmap=, #wm_iconbitmap_default, #wm_iconbitmap_default=, #wm_iconify, #wm_iconmask, #wm_iconmask=, #wm_iconname, #wm_iconname=, #wm_iconphoto, #wm_iconphoto=, #wm_iconphoto_default, #wm_iconphoto_default=, #wm_iconposition, #wm_iconposition=, #wm_iconwindow, #wm_iconwindow=, #wm_manage, #wm_maxsize, #wm_minsize, #wm_overrideredirect, #wm_overrideredirect=, #wm_positionfrom, #wm_positionfrom=, #wm_protocol, #wm_resizable, #wm_sizefrom, #wm_sizefrom=, #wm_stackorder, #wm_state, #wm_state=, #wm_title, #wm_title=, #wm_transient, #wm_transient=, #wm_withdraw

Methods included from Winfo

atom, atomname, cells, children, class_name, colormapfull, containing, depth, exists, fpixels, geometry, height, id, interps, ismapped, manager, name, parent, pathname, pixels, pointerx, pointerxy, pointery, reqheight, reqwidth, rgb, rootx, rooty, screen, screencells, screendepth, screenheight, screenmmheight, screenmmwidth, screenvisual, screenwidth, server, toplevel, viewable, visual, visualid, visualsavailable, vrootheight, vrootwidth, vrootx, vrooty, width, #winfo_atom, #winfo_atomname, #winfo_cells, #winfo_children, #winfo_class, #winfo_colormapfull, #winfo_containing, #winfo_depth, #winfo_exists, #winfo_fpixels, #winfo_geometry, #winfo_height, #winfo_id, #winfo_interps, #winfo_ismapped, #winfo_manager, #winfo_name, #winfo_parent, #winfo_pathname, #winfo_pixels, #winfo_pointerx, #winfo_pointerxy, #winfo_pointery, #winfo_reqheight, #winfo_reqwidth, #winfo_rgb, #winfo_rootx, #winfo_rooty, #winfo_screen, #winfo_screencells, #winfo_screendepth, #winfo_screenheight, #winfo_screenmmheight, #winfo_screenmmwidth, #winfo_screenvisual, #winfo_screenwidth, #winfo_server, #winfo_toplevel, #winfo_viewable, #winfo_visual, #winfo_visualid, #winfo_visualsavailable, #winfo_vrootheight, #winfo_vrootwidth, #winfo_vrootx, #winfo_vrooty, #winfo_width, #winfo_x, #winfo_y, x, y

Methods included from Grid

anchor, bbox, columnconfigure, configure, forget, #grid_anchor, #grid_bbox, #grid_columnconfigure, #grid_configure, #grid_forget, #grid_info, #grid_location, #grid_propagate, #grid_remove, #grid_rowconfigure, #grid_size, #grid_slave, #grid_slaves, info, location, propagate, remove, rowconfigure, size, slave, slaves

Methods included from Clipboard

append, clear, #clipboard_append, #clipboard_clear, #clipboard_get, #clipboard_set, get, set

Methods included from Place

configure, forget, info, place, #place, #place_configure, #place_forget, #place_info, #place_slaves, slaves

Methods included from TkCmd

appname, caret, inactive, scaling, #tk_appname, #tk_appname=, #tk_caret, #tk_inactive, #tk_scaling, #tk_scaling=, #tk_useinputmethods, #tk_useinputmethods=, #tk_windowingsystem, useinputmethods, windowingsystem

Constructor Details

This class inherits a constructor from Tk::Widget

Class Method Details

.tk_command ⇒ Object 



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# File 'lib/ffi-tk/widget/message.rb', line 35

def self.tk_command
  'message'
end