GET_INFO(SCREEN)
For an overview of the GET_INFO built-in, see the HELP topic GET_INFO.
The following strings can be used for parameter2 when parameter1 is the
keyword SCREEN:
Parameter 2 | Return Value (Parameter 1 is keyword SCREEN)
-----------------+----------------------------------------------------------
"active_area" | Array - An array containing information on the
| or location and dimensions of the application's
| Integer active area, or 0 if there is no active
| area. The structure of the array is
| as follows:
| array {1} - Window containing active area
| array {2} - Leftmost column of active area
| array {3} - Top row of active area
| array {4} - Width of active area
| array {5} - Height of active area
|
"ansi_crt" | (1 or 0) - Indicates whether the terminal is an ANSI_CRT.
|
"auto__repeat" | (1 or 0) - Indicates whether auto repeat feature is on.
|
"avo" | (1 or 0) - Indicates whether the terminal has the
| advanced video option (AVO).
|
"cross_window_ | (1 or 0) - Indicates whether the CURSOR_VERTICAL built-in
bounds" | crosses a window boundary when the cursor is
| moved beyond the top or bottom of a window.
|
"current_column" | Integer - Returns the column number of the current
| column as of the most recent screen update.
|
"current_row" | Integer - Returns the screen line number of the current
| row as of the most recent screen update.
|
"dec_crt" | (1 or 0) - Indicates whether the terminal is a DEC_CRT.
|
"dec_crt2" | (1 or 0) - Indicates whether the terminal is a DEC_CRT2.
|
"decwindows" | (1 or 0) - Indicates whether the DECwindows environment
| is available.
|
"detached_action"| Program - Returns the current detached action routine.
| or If no such routine is designated, returns
| Unspeci- the type UNSPECIFIED.
| fied
|
"detached_reason"| Integer - Returns a bit-encoded integer indicating
| which of the five possible detached states
| the cursor is in. Digital recommends
| that you use VAXTPU's predefined constants,
| rather than the actual integers, to refer
| to the reasons for detachment. The
| correspondence of constants, integers,
| and reasons is as follows:
|
| Constant Value Reason
| -------- ----- ------
| TPU$K_OFF_LEFT 1 Cursor is off
| the left side of
| the current window.
| TPU$K_OFF_RIGHT 2 Cursor is off
| the right side of
| the current window.
| TPU$K_INVISIBLE 4 Cursor is on an
| invisible record in
| the current window.
| TPU$K_DISJOINT 8 The current buffer
| is not mapped to the
| current window.
| TPU$K_UNMAPPED 16 No current window
| exists.
|
|
"edit_mode" | (1 or 0) - Indicates whether the terminal is set to
| edit mode.
|
"eightbit" | (1 or 0) - Indicates whether the terminal uses eightbit
| characters.
|
"event" | Array - If used in a routine providing information
| or about a global selection, returns a two-element
| Keyword array. Array {1} contains a keyword or string
| or identifying which global selection is
| String the subject of the information request.
| or Array {2} contains a string naming the global
| 0 selection property (such as STRING)
| that is the subject of the information
| request. If called from within a
| global selection grab or ungrab routine,
| returns the keyword PRIMARY or SECONDARY,
| or a string naming the global selection
| grabbed or lost. Returns 0 if the
| call has been used in the wrong context.
| You must specify the keyword GLOBAL_SELECT
| as the third parameter with this call.
|
"global_select" | (1 or 0) - Indicates whether VAXTPU currently owns
| the specified global selection. When
| you use this request string for Parameter2,
| use a third parameter to specify the
| global selection about which you want
| information. The values for Parameter3
| are the keyword PRIMARY, the keyword
| SECONDARY, or a string naming the
| global selection.
|
"grab_routine" | Program - The program or learn sequence implementing
| or the application's global selection or
| Learn input focus grab routine. When you use this
| or 0 request string for Parameter2, use a third
| parameter to specify which grab routine
| you want. The values for Parameter3 are
| the keyword GLOBAL_SELECT or the
| keyword INPUT_FOCUS. This call returns
| 0 if the specified grab routine does not
| exist.
|
"icon_name" | String - The string used as the layered application's
| name in the DECwindows icon box.
|
"input_focus" | 1 or 0 - Indicates whether VAXTPU owns the
| input focus.
|
"length" | Integer - The current length of the screen (measured
| in rows).
|
"line_editing" | Keyword - Current method of line editing (insert or
| or 0 overstrike); 0 if none. In the DECwindows
| version of VAXTPU, this call always returns
| 0.
|
"mouse" | (1 or 0) - Indicates whether VAXTPU's mouse support
| capability is turned on.
|
"new_length" | Integer - The number of rows that the screen will
| have after the resize action routine has
| been executed. Resize action routines
| should use this length, not the current
| length of the screen, to determine the
| length of windows. If used outside
| a resize action routine, this length
| is the same as the current length of the
| screen. This call is not valid in the
| CCT version of VAXTPU.
|
"new_width" | Integer - The number of columns that the screen will
| have after the the resize action routine has
| been executed. Resize action routines
| should use this length, not the current
| length of the screen, to determine the
| length of windows. If used outside
| a resize action routine, this length
| is the same as the current length of the
| screen. This call is not valid in the
| CCT version of VAXTPU.
|
"old_length" | Integer - The length of the screen (measured in
| rows) before the most recent resize
| event. This call is not valid in the
| CCT version of VAXTPU.
|
"old_width" | Integer - The width of the screen (measured in
| columns) before the most recent resize
| event. This call is not valid in the
| CCT version of VAXTPU.
|
"original_ | Integer - The length (measured in rows) that the
length" | screen had when VAXTPU was invoked.
|
"original_width" | Integer - The width (measured in columns) that the
| screen had when VAXTPU was invoked.
|
"prompt_length" | Integer - Number of lines in the prompt area.
|
"prompt_row" | Integer - Screen line number at which the prompt area
| begins.
|
"read_routine" | Program The program or learn sequence that VAXTPU
| or executes when it owns a global selection and
| Learn another DECwindows application has requested
| or information about that selection. Returns
| 0 0 if no read routine exists. When you use
| this request string, use the keyword
| GLOBAL_SELECT as the third parameter.
|
"screen_limits" | Array - An integer-indexed array specifying the
| minimum and maximum screen length and width.
| This call signals an error in the CCT version
| of VAXTPU.
|
"screen_update" | (1 or 0) - Indicates whether screen updating is turned on.
|
"scroll" | (1 or 0) - Indicates whether the terminal has scrolling
| regions.
|
"time" | String - The amount of time (in delta format)
| VAXTPU will wait after requesting
| information about a global selection
| before assuming that the request
| will not be answered.
|
"ungrab_routine" | Program - The program or learn sequence implementing
| or the application's global selection or
| Learn input focus ungrab routine. When you use this
| or request string for Parameter2, use a third
| 0 parameter to specify which ungrab routine
| you want. The values for Parameter3 are
| the keyword GLOBAL_SELECT or the
| keyword INPUT_FOCUS. This call returns
| 0 if the specified ungrab routine does not
| exist.
|
"visible_length" | Integer - Page length of the terminal.
|
"vt100" | (1 or 0) - Indicates whether the terminal a VT100-series.
|
"vt200" | (1 or 0) - Indicates whether the terminal a VT200-series.
|
"vt300" | (1 or 0) - Indicates whether the terminal a VT300-series.
|
"vk100" | (1 or 0) - Indicates whether the terminal is a GIGI.
|
"width" | Integer - Current physical width of the screen.
|
+----------------+--------------------------------------------------------+