| 1 | # Copyright (c) 1990-1994 The Regents of the University of California. |
| 2 | # Copyright (c) 1994-1996 Sun Microsystems, Inc. |
| 3 | # See the file "license.terms" for information on usage and redistribution |
| 4 | # of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
| 5 | # |
| 6 | # |
| 7 | |
| 8 | =head1 NAME |
| 9 | |
| 10 | Tk::Entry - Create and manipulate Entry widgets |
| 11 | |
| 12 | =for category Tk Widget Classes |
| 13 | |
| 14 | =head1 SYNOPSIS |
| 15 | |
| 16 | S< >I<$entry> = I<$parent>-E<gt>B<Entry>(?I<options>?); |
| 17 | |
| 18 | =head1 STANDARD OPTIONS |
| 19 | |
| 20 | B<-background> B<-highlightbackground> B<-insertontime> B<-selectforeground> |
| 21 | B<-borderwidth> B<-highlightcolor> B<-insertwidth> B<-takefocus> |
| 22 | B<-cursor> B<-highlightthickness> B<-justify> B<-textvariable> |
| 23 | B<-exportselection> B<-insertbackground> B<-relief> B<-xscrollcommand> |
| 24 | B<-font> B<-insertborderwidth> B<-selectbackground> |
| 25 | B<-foreground> B<-insertofftime> B<-selectborderwidth> |
| 26 | |
| 27 | =head1 WIDGET-SPECIFIC OPTIONS |
| 28 | |
| 29 | =over 4 |
| 30 | |
| 31 | =item Name: B<invalidCommand> |
| 32 | |
| 33 | =item Class: B<InvalidCommand> |
| 34 | |
| 35 | =item Switch: B<-invalidcommand> |
| 36 | |
| 37 | =item Alias: B<-invcmd> |
| 38 | |
| 39 | Specifies a script to eval when B<validateCommand> returns 0. |
| 40 | Setting it to <undef> disables this feature (the default). The best use |
| 41 | of this option is to set it to I<bell>. See B<Validation> |
| 42 | below for more information. |
| 43 | |
| 44 | =item Name: B<show> |
| 45 | |
| 46 | =item Class: B<Show> |
| 47 | |
| 48 | =item Switch: B<-show> |
| 49 | |
| 50 | If this option is specified, then the true contents of the entry |
| 51 | are not displayed in the window. |
| 52 | Instead, each character in the entry's value will be displayed as |
| 53 | the first character in the value of this option, such as ``*''. |
| 54 | This is useful, for example, if the entry is to be used to enter |
| 55 | a password. |
| 56 | If characters in the entry are selected and copied elsewhere, the |
| 57 | information copied will be what is displayed, not the true contents |
| 58 | of the entry. |
| 59 | |
| 60 | =item Name: B<state> |
| 61 | |
| 62 | =item Class: B<State> |
| 63 | |
| 64 | =item Switch: B<-state> |
| 65 | |
| 66 | Specifies one of two states for the entry: B<normal> or B<disabled>. |
| 67 | If the entry is disabled then the value may not be changed using widget |
| 68 | methods and no insertion cursor will be displayed, even if the input focus is |
| 69 | in the widget. |
| 70 | |
| 71 | =item Name: B<validate> |
| 72 | |
| 73 | =item Class: B<Validate> |
| 74 | |
| 75 | =item Switch: B<-validate> |
| 76 | |
| 77 | Specifies the mode in which validation should operate: B<none>, |
| 78 | B<focus>, B<focusin>, B<focusout>, B<key>, or B<all>. |
| 79 | It defaults to B<none>. When you want validation, you must explicitly |
| 80 | state which mode you wish to use. See B<Validation> below for more. |
| 81 | |
| 82 | =item Name: B<validateCommand> |
| 83 | |
| 84 | =item Class: B<ValidateCommand> |
| 85 | |
| 86 | =item Switch: B<-validatecommand> |
| 87 | |
| 88 | =item Alias: B<-vcmd> |
| 89 | |
| 90 | Specifies a script to eval when you want to validate the input into |
| 91 | the entry widget. Setting it to C<undef> disables this feature (the default). |
| 92 | This command must return a valid boolean value. If it returns 0 (or |
| 93 | the valid boolean equivalent) then it means you reject the new edition |
| 94 | and it will not occur and the B<invalidCommand> will be evaluated if it |
| 95 | is set. If it returns 1, then the new edition occurs. |
| 96 | See B<Validation> below for more information. |
| 97 | |
| 98 | =item Name: B<width> |
| 99 | |
| 100 | =item Class: B<Width> |
| 101 | |
| 102 | =item Switch: B<-width> |
| 103 | |
| 104 | Specifies an integer value indicating the desired width of the entry window, |
| 105 | in average-size characters of the widget's font. |
| 106 | If the value is less than or equal to zero, the widget picks a |
| 107 | size just large enough to hold its current text. |
| 108 | |
| 109 | =back |
| 110 | |
| 111 | =head1 DESCRIPTION |
| 112 | |
| 113 | The B<Entry> method creates a new window (given by the |
| 114 | $entry argument) and makes it into an entry widget. |
| 115 | Additional options, described above, may be specified on the |
| 116 | command line or in the option database |
| 117 | to configure aspects of the entry such as its colors, font, |
| 118 | and relief. The B<entry> command returns its |
| 119 | $entry argument. At the time this command is invoked, |
| 120 | there must not exist a window named $entry, but |
| 121 | $entry's parent must exist. |
| 122 | |
| 123 | An entry is a widget that displays a one-line text string and |
| 124 | allows that string to be edited using methods described below, which |
| 125 | are typically bound to keystrokes and mouse actions. |
| 126 | When first created, an entry's string is empty. |
| 127 | A portion of the entry may be selected as described below. |
| 128 | If an entry is exporting its selection (see the B<exportSelection> |
| 129 | option), then it will observe the standard X11 protocols for handling the |
| 130 | selection; entry selections are available as type B<STRING>. |
| 131 | Entries also observe the standard Tk rules for dealing with the |
| 132 | input focus. When an entry has the input focus it displays an |
| 133 | I<insertion cursor> to indicate where new characters will be |
| 134 | inserted. |
| 135 | |
| 136 | Entries are capable of displaying strings that are too long to |
| 137 | fit entirely within the widget's window. In this case, only a |
| 138 | portion of the string will be displayed; methods described below |
| 139 | may be used to change the view in the window. Entries use |
| 140 | the standard B<xScrollCommand> mechanism for interacting with |
| 141 | scrollbars (see the description of the B<-xscrollcommand> option |
| 142 | for details). They also support scanning, as described below. |
| 143 | |
| 144 | =head1 VALIDATION |
| 145 | |
| 146 | Validation of entry widgets is derived from part of the patch written by |
| 147 | jhobbs@cs.uoregon.edu. This works by setting the B<validateCommand> |
| 148 | option to a callback which will be evaluated according to the B<validate> |
| 149 | option as follows: |
| 150 | |
| 151 | =over 4 |
| 152 | |
| 153 | =item B<none> |
| 154 | |
| 155 | Default. This means no validation will occur. |
| 156 | |
| 157 | =item B<focus> |
| 158 | |
| 159 | B<validateCommand> will be called when the entry receives or |
| 160 | loses focus. |
| 161 | |
| 162 | =item B<focusin> |
| 163 | |
| 164 | B<validateCommand> will be called when the entry receives focus. |
| 165 | |
| 166 | =item B<focusout> |
| 167 | |
| 168 | B<validateCommand> will be called when the entry loses focus. |
| 169 | |
| 170 | =item B<key> |
| 171 | |
| 172 | B<validateCommand> will be called when the entry is edited. |
| 173 | |
| 174 | =item B<all> |
| 175 | |
| 176 | B<validateCommand> will be called for all above conditions. |
| 177 | |
| 178 | =back |
| 179 | |
| 180 | The B<validateCommand> and B<invalidCommand> are called with the following |
| 181 | arguments: |
| 182 | |
| 183 | =over 4 |
| 184 | |
| 185 | =item * The proposed value of the entry. If you are configuring the |
| 186 | entry widget to have a new textvariable, this will be the value of that |
| 187 | textvariable. |
| 188 | |
| 189 | =item * The characters to be added (or deleted). This will be C<undef> |
| 190 | if validation is due to focus, explcit call to validate or if change |
| 191 | is due to C<-textvariable> changing. |
| 192 | |
| 193 | =item * The current value of entry i.e. before the proposed change. |
| 194 | |
| 195 | =item * index of char string to be added/deleted, if any. -1 otherwise |
| 196 | |
| 197 | =item * type of action. 1 == INSERT, 0 == DELETE, |
| 198 | -1 if it's a forced validation or textvariable validation |
| 199 | |
| 200 | =back |
| 201 | |
| 202 | In general, the B<textVariable> and B<validateCommand> can be |
| 203 | dangerous to mix. If you try set the B<textVariable> |
| 204 | to something that the B<validateCommand> will not accept it will |
| 205 | be set back to the value of the entry widget. |
| 206 | Using the B<textVariable> for read-only purposes will never cause problems. |
| 207 | |
| 208 | The B<validateCommand> will turn itself off by setting |
| 209 | B<validate> to B<none> when an error occurs, for example |
| 210 | when the B<validateCommand> or B<invalidCommand> encounters |
| 211 | an error in its script while evaluating, or |
| 212 | B<validateCommand> does not return a valid boolean value. |
| 213 | |
| 214 | With the perl/Tk version B<validate> option is supposed to be |
| 215 | "suspended" while executing the B<validateCommand> or the B<invalidCommand>. |
| 216 | This is experimental but in theory either callback can "correct" the |
| 217 | value of the widget, and override the proposed change. (B<validateCommand> |
| 218 | should still return false to inhibit the change from happening when |
| 219 | it returns.) |
| 220 | |
| 221 | =head1 WIDGET METHODS |
| 222 | |
| 223 | The B<Entry> method creates a widget object. |
| 224 | This object supports the B<configure> and B<cget> methods |
| 225 | described in L<Tk::options> which can be used to enquire and |
| 226 | modify the options described above. |
| 227 | The widget also inherits all the methods provided by the generic |
| 228 | L<Tk::Widget|Tk::Widget> class. |
| 229 | |
| 230 | Many of the additional methods for entries take one or more indices as |
| 231 | arguments. An index specifies a particular character in the entry's |
| 232 | string, in any of the following ways: |
| 233 | |
| 234 | =over 4 |
| 235 | |
| 236 | =item I<number> |
| 237 | |
| 238 | Specifies the character as a numerical index, where 0 corresponds |
| 239 | to the first character in the string. |
| 240 | |
| 241 | =item B<anchor> |
| 242 | |
| 243 | Indicates the anchor point for the selection, which is set with the |
| 244 | B<selectionFrom> and B<selectionAdjust> methods. |
| 245 | |
| 246 | =item B<end> |
| 247 | |
| 248 | Indicates the character just after the last one in the entry's string. |
| 249 | This is equivalent to specifying a numerical index equal to the length |
| 250 | of the entry's string. |
| 251 | |
| 252 | =item B<insert> |
| 253 | |
| 254 | Indicates the character adjacent to and immediately following the |
| 255 | insertion cursor. |
| 256 | |
| 257 | =item B<sel.first> |
| 258 | |
| 259 | Indicates the first character in the selection. It is an error to |
| 260 | use this form if the selection isn't in the entry window. |
| 261 | |
| 262 | =item B<sel.last> |
| 263 | |
| 264 | Indicates the character just after the last one in the selection. |
| 265 | It is an error to use this form if the selection isn't in the |
| 266 | entry window. |
| 267 | |
| 268 | =item B<@>I<number> |
| 269 | |
| 270 | In this form, I<number> is treated as an x-coordinate in the |
| 271 | entry's window; the character spanning that x-coordinate is used. |
| 272 | For example, ``B<@0>'' indicates the left-most character in the |
| 273 | window. |
| 274 | |
| 275 | =back |
| 276 | |
| 277 | Abbreviations may be used for any of the forms above, e.g. ``B<e>'' |
| 278 | or ``B<sel.f>''. In general, out-of-range indices are automatically |
| 279 | rounded to the nearest legal value. |
| 280 | |
| 281 | The following additional methods are available for entry widgets: |
| 282 | |
| 283 | =over 4 |
| 284 | |
| 285 | =item I<$entry>-E<gt>B<bbox>(I<index>) |
| 286 | |
| 287 | Returns a list of four numbers describing the bounding box of the |
| 288 | character given by I<index>. |
| 289 | The first two elements of the list give the x and y coordinates of |
| 290 | the upper-left corner of the screen area covered by the character |
| 291 | (in pixels relative to the widget) and the last two elements give |
| 292 | the width and height of the character, in pixels. |
| 293 | The bounding box may refer to a region outside the visible area |
| 294 | of the window. |
| 295 | |
| 296 | =item I<$entry>-E<gt>B<delete>(I<first, >?I<last>?) |
| 297 | |
| 298 | Returns the current value of the configuration option given |
| 299 | by I<option>. |
| 300 | I<Option> may have any of the values accepted by the B<entry> |
| 301 | command. |
| 302 | |
| 303 | =item I<$entry>-E<gt>B<configure>(?I<option>?, ?I<value, option, value, ...>?) |
| 304 | |
| 305 | Query or modify the configuration options of the widget. |
| 306 | If no I<option> is specified, returns a list describing all of |
| 307 | the available options for $entry (see L<Tk::configure> for |
| 308 | information on the format of this list). If I<option> is specified |
| 309 | with no I<value>, then the command returns a list describing the |
| 310 | one named option (this list will be identical to the corresponding |
| 311 | sublist of the value returned if no I<option> is specified). If |
| 312 | one or more I<option-value> pairs are specified, then the command |
| 313 | modifies the given widget option(s) to have the given value(s); in |
| 314 | this case the command returns an empty string. |
| 315 | I<Option> may have any of the values accepted by the B<entry> |
| 316 | command. |
| 317 | |
| 318 | =item I<$entry>-E<gt>B<delete>(I<first, >?I<last>?) |
| 319 | |
| 320 | Delete one or more elements of the entry. |
| 321 | I<First> is the index of the first character to delete, and |
| 322 | I<last> is the index of the character just after the last |
| 323 | one to delete. |
| 324 | If I<last> isn't specified it defaults to I<first>+1, |
| 325 | i.e. a single character is deleted. |
| 326 | This method returns an empty string. |
| 327 | |
| 328 | =item I<$entry>-E<gt>B<get> |
| 329 | |
| 330 | Returns the entry's string. |
| 331 | |
| 332 | =item I<$entry>-E<gt>B<icursor>(I<index>) |
| 333 | |
| 334 | Arrange for the insertion cursor to be displayed just before the character |
| 335 | given by I<index>. Returns an empty string. |
| 336 | |
| 337 | =item I<$entry>-E<gt>B<index>(I<index>) |
| 338 | |
| 339 | Returns the numerical index corresponding to I<index>. |
| 340 | |
| 341 | =item I<$entry>-E<gt>B<insert>(I<index, string>) |
| 342 | |
| 343 | Insert the characters of I<string> just before the character |
| 344 | indicated by I<index>. Returns an empty string. |
| 345 | |
| 346 | =item I<$entry>->B<scan>(I<option, args>) |
| 347 | |
| 348 | =item I<$entry>->B<scan>I<Option>(I<args>) |
| 349 | |
| 350 | This method is used to implement scanning on entries. It has |
| 351 | two forms, depending on I<Option>: |
| 352 | |
| 353 | =over 8 |
| 354 | |
| 355 | =item I<$entry>->B<scanMark>(I<x>) |
| 356 | |
| 357 | Records I<x> and the current view in the entry widget; used in |
| 358 | conjunction with later B<scanDragto> methods. Typically this |
| 359 | method is associated with a mouse button press in the widget. It |
| 360 | returns an empty string. |
| 361 | |
| 362 | =item I<$entry>->B<scanDragto>(I<x>) |
| 363 | |
| 364 | This method computes the difference between its I<x> argument |
| 365 | and the I<x> argument to the last B<scanMark> method for |
| 366 | the widget. It then adjusts the view left or right by 10 times the |
| 367 | difference in x-coordinates. This method is typically associated |
| 368 | with mouse motion events in the widget, to produce the effect of |
| 369 | dragging the entry at high speed through the widget. The return |
| 370 | value is an empty string. |
| 371 | |
| 372 | =back |
| 373 | |
| 374 | =item I<$entry>->B<selection>(I<option, arg>) |
| 375 | |
| 376 | =item I<$entry>->B<selection>I<Option>(I<arg>) |
| 377 | |
| 378 | This method is used to adjust the selection within an entry. It |
| 379 | has several forms, depending on I<Option>: |
| 380 | |
| 381 | =over 8 |
| 382 | |
| 383 | =item I<$entry>-E<gt>B<selectionAdjust>(I<index>) |
| 384 | |
| 385 | Locate the end of the selection nearest to the character given by |
| 386 | I<index>, and adjust that end of the selection to be at I<index> |
| 387 | (i.e including but not going beyond I<index>). The other |
| 388 | end of the selection is made the anchor point for future |
| 389 | B<selectionTo> methods. If the selection |
| 390 | isn't currently in the entry, then a new selection is created to |
| 391 | include the characters between I<index> and the most recent |
| 392 | selection anchor point, inclusive. |
| 393 | Returns an empty string. |
| 394 | |
| 395 | =item I<$entry>-E<gt>B<selectionClear> |
| 396 | |
| 397 | Clear the selection if it is currently in this widget. If the |
| 398 | selection isn't in this widget then the method has no effect. |
| 399 | Returns an empty string. |
| 400 | |
| 401 | =item I<$entry>-E<gt>B<selectionFrom>(I<index>) |
| 402 | |
| 403 | Set the selection anchor point to just before the character |
| 404 | given by I<index>. Doesn't change the selection. |
| 405 | Returns an empty string. |
| 406 | |
| 407 | =item I<$entry>-E<gt>B<selectionPresent> |
| 408 | |
| 409 | Returns 1 if there is are characters selected in the entry, |
| 410 | 0 if nothing is selected. |
| 411 | |
| 412 | =item I<$entry>-E<gt>B<selectionRange>(I<start, >I<end>) |
| 413 | |
| 414 | Sets the selection to include the characters starting with |
| 415 | the one indexed by I<start> and ending with the one just |
| 416 | before I<end>. |
| 417 | If I<end> refers to the same character as I<start> or an |
| 418 | earlier one, then the entry's selection is cleared. |
| 419 | |
| 420 | =item I<$entry>-E<gt>B<selectionTo>(I<index>) |
| 421 | |
| 422 | If I<index> is before the anchor point, set the selection |
| 423 | to the characters from I<index> up to but not including |
| 424 | the anchor point. |
| 425 | If I<index> is the same as the anchor point, do nothing. |
| 426 | If I<index> is after the anchor point, set the selection |
| 427 | to the characters from the anchor point up to but not including |
| 428 | I<index>. |
| 429 | The anchor point is determined by the most recent B<selectionFrom> |
| 430 | or B<selectionAdjust> method in this widget. |
| 431 | If the selection isn't in this widget then a new selection is |
| 432 | created using the most recent anchor point specified for the widget. |
| 433 | Returns an empty string. |
| 434 | |
| 435 | =back |
| 436 | |
| 437 | =item I<$entry>-E<gt>B<validate> |
| 438 | |
| 439 | This command is used to force an evaluation of the B<validateCommand> |
| 440 | independent of the conditions specified by the B<validate> option. It |
| 441 | returns 0 or 1. |
| 442 | |
| 443 | =item I<$entry>-E<gt>B<xview>(I<args>) |
| 444 | |
| 445 | This command is used to query and change the horizontal position of the |
| 446 | text in the widget's window. It can take any of the following |
| 447 | forms: |
| 448 | |
| 449 | =over 8 |
| 450 | |
| 451 | =item I<$entry>-E<gt>B<xview> |
| 452 | |
| 453 | Returns a list containing two elements. |
| 454 | Each element is a real fraction between 0 and 1; together they describe |
| 455 | the horizontal span that is visible in the window. |
| 456 | For example, if the first element is .2 and the second element is .7, |
| 457 | 20% of the entry's text is off-screen to the left, the middle 50% is visible |
| 458 | in the window, and 30% of the text is off-screen to the right. |
| 459 | These are the same values passed to scrollbars via the B<-xscrollcommand> |
| 460 | option. |
| 461 | |
| 462 | =item I<$entry>-E<gt>B<xview>(I<index>) |
| 463 | |
| 464 | Adjusts the view in the window so that the character given by I<index> |
| 465 | is displayed at the left edge of the window. |
| 466 | |
| 467 | =item I<$entry>-E<gt>B<xviewMoveto>(I<fraction>) |
| 468 | |
| 469 | Adjusts the view in the window so that the character I<fraction> of the |
| 470 | way through the text appears at the left edge of the window. |
| 471 | I<Fraction> must be a fraction between 0 and 1. |
| 472 | |
| 473 | =item I<$entry>-E<gt>B<xviewScroll>(I<number, what>) |
| 474 | |
| 475 | This method shifts the view in the window left or right according to |
| 476 | I<number> and I<what>. |
| 477 | I<Number> must be an integer. |
| 478 | I<What> must be either B<units> or B<pages> or an abbreviation |
| 479 | of one of these. |
| 480 | If I<what> is B<units>, the view adjusts left or right by |
| 481 | I<number> average-width characters on the display; if it is |
| 482 | B<pages> then the view adjusts by I<number> screenfuls. |
| 483 | If I<number> is negative then characters farther to the left |
| 484 | become visible; if it is positive then characters farther to the right |
| 485 | become visible. |
| 486 | |
| 487 | =back |
| 488 | |
| 489 | =head1 DEFAULT BINDINGS |
| 490 | |
| 491 | Tk automatically creates class bindings for entries that give them |
| 492 | the following default behavior. |
| 493 | In the descriptions below, ``word'' refers to a contiguous group |
| 494 | of letters, digits, or ``_'' characters, or any single character |
| 495 | other than these. |
| 496 | |
| 497 | =over 4 |
| 498 | |
| 499 | =item [1] |
| 500 | |
| 501 | Clicking mouse button 1 positions the insertion cursor |
| 502 | just before the character underneath the mouse cursor, sets the |
| 503 | input focus to this widget, and clears any selection in the widget. |
| 504 | Dragging with mouse button 1 strokes out a selection between |
| 505 | the insertion cursor and the character under the mouse. |
| 506 | |
| 507 | =item [2] |
| 508 | |
| 509 | Double-clicking with mouse button 1 selects the word under the mouse |
| 510 | and positions the insertion cursor at the beginning of the word. |
| 511 | Dragging after a double click will stroke out a selection consisting |
| 512 | of whole words. |
| 513 | |
| 514 | =item [3] |
| 515 | |
| 516 | Triple-clicking with mouse button 1 selects all of the text in the |
| 517 | entry and positions the insertion cursor before the first character. |
| 518 | |
| 519 | =item [4] |
| 520 | |
| 521 | The ends of the selection can be adjusted by dragging with mouse |
| 522 | button 1 while the Shift key is down; this will adjust the end |
| 523 | of the selection that was nearest to the mouse cursor when button |
| 524 | 1 was pressed. |
| 525 | If the button is double-clicked before dragging then the selection |
| 526 | will be adjusted in units of whole words. |
| 527 | |
| 528 | =item [5] |
| 529 | |
| 530 | Clicking mouse button 1 with the Control key down will position the |
| 531 | insertion cursor in the entry without affecting the selection. |
| 532 | |
| 533 | =item [6] |
| 534 | |
| 535 | If any normal printing characters are typed in an entry, they are |
| 536 | inserted at the point of the insertion cursor. |
| 537 | |
| 538 | =item [7] |
| 539 | |
| 540 | The view in the entry can be adjusted by dragging with mouse button 2. |
| 541 | If mouse button 2 is clicked without moving the mouse, the selection |
| 542 | is copied into the entry at the position of the mouse cursor. |
| 543 | |
| 544 | =item [8] |
| 545 | |
| 546 | If the mouse is dragged out of the entry on the left or right sides |
| 547 | while button 1 is pressed, the entry will automatically scroll to |
| 548 | make more text visible (if there is more text off-screen on the side |
| 549 | where the mouse left the window). |
| 550 | |
| 551 | =item [9] |
| 552 | |
| 553 | The Left and Right keys move the insertion cursor one character to the |
| 554 | left or right; they also clear any selection in the entry and set |
| 555 | the selection anchor. |
| 556 | If Left or Right is typed with the Shift key down, then the insertion |
| 557 | cursor moves and the selection is extended to include the new character. |
| 558 | Control-Left and Control-Right move the insertion cursor by words, and |
| 559 | Control-Shift-Left and Control-Shift-Right move the insertion cursor |
| 560 | by words and also extend the selection. |
| 561 | Control-b and Control-f behave the same as Left and Right, respectively. |
| 562 | Meta-b and Meta-f behave the same as Control-Left and Control-Right, |
| 563 | respectively. |
| 564 | |
| 565 | =item [10] |
| 566 | |
| 567 | The Home key, or Control-a, will move the insertion cursor to the |
| 568 | beginning of the entry and clear any selection in the entry. |
| 569 | Shift-Home moves the insertion cursor to the beginning of the entry |
| 570 | and also extends the selection to that point. |
| 571 | |
| 572 | =item [11] |
| 573 | |
| 574 | The End key, or Control-e, will move the insertion cursor to the |
| 575 | end of the entry and clear any selection in the entry. |
| 576 | Shift-End moves the cursor to the end and extends the selection |
| 577 | to that point. |
| 578 | |
| 579 | =item [12] |
| 580 | |
| 581 | The Select key and Control-Space set the selection anchor to the position |
| 582 | of the insertion cursor. They don't affect the current selection. |
| 583 | Shift-Select and Control-Shift-Space adjust the selection to the |
| 584 | current position of the insertion cursor, selecting from the anchor |
| 585 | to the insertion cursor if there was not any selection previously. |
| 586 | |
| 587 | =item [13] |
| 588 | |
| 589 | Control-/ selects all the text in the entry. |
| 590 | |
| 591 | =item [14] |
| 592 | |
| 593 | Control-\ clears any selection in the entry. |
| 594 | |
| 595 | =item [15] |
| 596 | |
| 597 | The F16 key (labelled Copy on many Sun workstations) or Meta-w |
| 598 | copies the selection in the widget to the clipboard, if there is a selection. |
| 599 | |
| 600 | =item [16] |
| 601 | |
| 602 | The F20 key (labelled Cut on many Sun workstations) or Control-w |
| 603 | copies the selection in the widget to the clipboard and deletes |
| 604 | the selection. |
| 605 | If there is no selection in the widget then these keys have no effect. |
| 606 | |
| 607 | =item [17] |
| 608 | |
| 609 | The F18 key (labelled Paste on many Sun workstations) or Control-y |
| 610 | inserts the contents of the clipboard at the position of the |
| 611 | insertion cursor. |
| 612 | |
| 613 | =item [18] |
| 614 | |
| 615 | The Delete key deletes the selection, if there is one in the entry. |
| 616 | If there is no selection, it deletes the character to the right of |
| 617 | the insertion cursor. |
| 618 | |
| 619 | =item [19] |
| 620 | |
| 621 | The BackSpace key and Control-h delete the selection, if there is one |
| 622 | in the entry. |
| 623 | If there is no selection, it deletes the character to the left of |
| 624 | the insertion cursor. |
| 625 | |
| 626 | =item [20] |
| 627 | |
| 628 | Control-d deletes the character to the right of the insertion cursor. |
| 629 | |
| 630 | =item [21] |
| 631 | |
| 632 | Meta-d deletes the word to the right of the insertion cursor. |
| 633 | |
| 634 | =item [22] |
| 635 | |
| 636 | Control-k deletes all the characters to the right of the insertion |
| 637 | cursor. |
| 638 | |
| 639 | =item [23] |
| 640 | |
| 641 | Control-t reverses the order of the two characters to the right of |
| 642 | the insertion cursor. |
| 643 | |
| 644 | If the entry is disabled using the B<-state> option, then the entry's |
| 645 | view can still be adjusted and text in the entry can still be selected, |
| 646 | but no insertion cursor will be displayed and no text modifications will |
| 647 | take place. |
| 648 | |
| 649 | The behavior of entries can be changed by defining new bindings for |
| 650 | individual widgets or by redefining the class bindings. |
| 651 | |
| 652 | =back |
| 653 | |
| 654 | =head1 KEYWORDS |
| 655 | |
| 656 | entry, widget |
| 657 | |
| 658 | =cut |
| 659 | |