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authorrjohnson <rjohnson>1998-04-01 09:51:44 (GMT)
committerrjohnson <rjohnson>1998-04-01 09:51:44 (GMT)
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+# text.tcl --
+#
+# This demonstration script creates a text widget that describes
+# the basic editing functions.
+#
+# SCCS: @(#) text.tcl 1.6 97/03/02 16:28:12
+
+if {![info exists widgetDemo]} {
+ error "This script should be run from the \"widget\" demo."
+}
+
+set w .text
+catch {destroy $w}
+toplevel $w
+wm title $w "Text Demonstration - Basic Facilities"
+wm iconname $w "text"
+positionWindow $w
+
+frame $w.buttons
+pack $w.buttons -side bottom -fill x -pady 2m
+button $w.buttons.dismiss -text Dismiss -command "destroy $w"
+button $w.buttons.code -text "See Code" -command "showCode $w"
+pack $w.buttons.dismiss $w.buttons.code -side left -expand 1
+
+text $w.text -relief sunken -bd 2 -yscrollcommand "$w.scroll set" -setgrid 1 \
+ -height 30
+scrollbar $w.scroll -command "$w.text yview"
+pack $w.scroll -side right -fill y
+pack $w.text -expand yes -fill both
+$w.text insert 0.0 \
+{This window is a text widget. It displays one or more lines of text
+and allows you to edit the text. Here is a summary of the things you
+can do to a text widget:
+
+1. Scrolling. Use the scrollbar to adjust the view in the text window.
+
+2. Scanning. Press mouse button 2 in the text window and drag up or down.
+This will drag the text at high speed to allow you to scan its contents.
+
+3. Insert text. Press mouse button 1 to set the insertion cursor, then
+type text. What you type will be added to the widget.
+
+4. Select. Press mouse button 1 and drag to select a range of characters.
+Once you've released the button, you can adjust the selection by pressing
+button 1 with the shift key down. This will reset the end of the
+selection nearest the mouse cursor and you can drag that end of the
+selection by dragging the mouse before releasing the mouse button.
+You can double-click to select whole words or triple-click to select
+whole lines.
+
+5. Delete and replace. To delete text, select the characters you'd like
+to delete and type Backspace or Delete. Alternatively, you can type new
+text, in which case it will replace the selected text.
+
+6. Copy the selection. To copy the selection into this window, select
+what you want to copy (either here or in another application), then
+click button 2 to copy the selection to the point of the mouse cursor.
+
+7. Edit. Text widgets support the standard Motif editing characters
+plus many Emacs editing characters. Backspace and Control-h erase the
+character to the left of the insertion cursor. Delete and Control-d
+erase the character to the right of the insertion cursor. Meta-backspace
+deletes the word to the left of the insertion cursor, and Meta-d deletes
+the word to the right of the insertion cursor. Control-k deletes from
+the insertion cursor to the end of the line, or it deletes the newline
+character if that is the only thing left on the line. Control-o opens
+a new line by inserting a newline character to the right of the insertion
+cursor. Control-t transposes the two characters on either side of the
+insertion cursor.
+
+7. Resize the window. This widget has been configured with the "setGrid"
+option on, so that if you resize the window it will always resize to an
+even number of characters high and wide. Also, if you make the window
+narrow you can see that long lines automatically wrap around onto
+additional lines so that all the information is always visible.}
+$w.text mark set insert 0.0