| 1 | # texts.pl |
| 2 | |
| 3 | use vars qw/$TOP/; |
| 4 | |
| 5 | sub texts { |
| 6 | |
| 7 | # Create a top-level window that displays a basic text widget. |
| 8 | |
| 9 | my ($demo) = @_; |
| 10 | $TOP = $MW->WidgetDemo( |
| 11 | -name => $demo, |
| 12 | -text => '', |
| 13 | -title => 'Text Demonstration - Basic Facilities', |
| 14 | -iconname => 'texts', |
| 15 | ); |
| 16 | |
| 17 | my $t = $TOP->Scrolled(qw/Text -relief sunken -borderwidth 2 -setgrid true |
| 18 | -height 30 -scrollbars e/); |
| 19 | $t->pack(qw/-expand yes -fill both/); |
| 20 | |
| 21 | $t->insert('0.0', 'This window is a text widget. It displays one or more lines of text |
| 22 | and allows you to edit the text. Here is a summary of the things you |
| 23 | can do to a text widget: |
| 24 | |
| 25 | 1. Scrolling. Use the scrollbar to adjust the view in the text window. |
| 26 | |
| 27 | 2. Scanning. Press mouse button 2 in the text window and drag up or down. |
| 28 | This will drag the text at high speed to allow you to scan its contents. |
| 29 | |
| 30 | 3. Insert text. Press mouse button 1 to set the insertion cursor, then |
| 31 | type text. What you type will be added to the widget. |
| 32 | |
| 33 | 4. Select. Press mouse button 1 and drag to select a range of characters. |
| 34 | Once you\'ve released the button, you can adjust the selection by pressing |
| 35 | button 1 with the shift key down. This will reset the end of the |
| 36 | selection nearest the mouse cursor and you can drag that end of the |
| 37 | selection by dragging the mouse before releasing the mouse button. |
| 38 | You can double-click to select whole words or triple-click to select |
| 39 | whole lines. |
| 40 | |
| 41 | 5. Delete and replace. To delete text, select the characters you\'d like |
| 42 | to delete and type Backspace or Delete. Alternatively, you can type new |
| 43 | text, in which case it will replace the selected text. |
| 44 | |
| 45 | 6. Copy the selection. To copy the selection into this window, select |
| 46 | what you want to copy (either here or in another application), then |
| 47 | click button 2 to copy the selection to the point of the mouse cursor. |
| 48 | |
| 49 | 7. Edit. Text widgets support the standard Motif editing characters |
| 50 | plus many Emacs editing characters. Backspace and Control-h erase the |
| 51 | character to the left of the insertion cursor. Delete and Control-d |
| 52 | erase the character to the right of the insertion cursor. Meta-backspace |
| 53 | deletes the word to the left of the insertion cursor, and Meta-d deletes |
| 54 | the word to the right of the insertion cursor. Control-k deletes from |
| 55 | the insertion cursor to the end of the line, or it deletes the newline |
| 56 | character if that is the only thing left on the line. Control-o opens |
| 57 | a new line by inserting a newline character to the right of the insertion |
| 58 | cursor. Control-t transposes the two characters on either side of the |
| 59 | insertion cursor. |
| 60 | |
| 61 | 7. Resize the window. This widget has been configured with the "setGrid" |
| 62 | option on, so that if you resize the window it will always resize to an |
| 63 | even number of characters high and wide. Also, if you make the window |
| 64 | narrow you can see that long lines automatically wrap around onto |
| 65 | additional lines so that all the information is always visible.'); |
| 66 | |
| 67 | $t->mark(qw/set insert 0.0/); |
| 68 | |
| 69 | } # end texts |
| 70 | |
| 71 | 1; |