GET_INFO(WIDGET)
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 WIDGET:
Parameter 2 | Return Value (Parameter 1 is the keyword WIDGET)
+----------------+---------------------------------------------------------+
"callback_ | 1 or 0 - The value 1 if the call was encountered
parameters" | within a callback procedure and
| if callback information is available;
| 0 otherwise. The syntax of
| this built-in is as follows:
|
| GET_INFO (WIDGET, callback_parameters,
| array_variable)
|
| The third parameter is an array
| created by DECTPU and assigned
| to "array_variable". After DECTPU
| executes the call, the array elements
| contain the widget instance performing
| the callback, the closure value,
| and the callback reason. The array
| elements are indexed by the the
| following strings: "widget",
| "closure", "reason_code". If the
| application has used SET (WIDGET_CALL_DATA)
| to define the format of callback data
| for the widget and reason code that
| are returned by the current call to
| GET_INFO (WIDGET, "callback_parameters"),
| then the array parameter automatically
| receives a fourth element. The element
| is indexed with the string "call_data"
| and contains an integer-indexed array.
| The number of elements in this array is
| the same as the number of callback data
| structure fields specified in the
| corresponding SET (WIDGET_CALL_DATA) call.
| Element 1 contains the event field
| (for whcih the application usually
| specifies an output data type of
| UNSPECIFIED); subsequent elements
| hold the contents of subsequent
| callback data structure fields.
|
"children" | Integer - The number of widget children controlled
| by the specified widget or by DECTPU's
| main window widget.
|
| The syntax of this GET_INFO call
| is as follows:
|
| GET_INFO (WIDGET, "children",
| {SCREEN | widget},
| array_variable)
|
| To specify DECTPU's main window widget,
| use the keyword SCREEN; otherwise,
| specify the widget you want. If the
| widget has any children, DECTPU creates
| an array and assigns it to the array
| variable. The array is integer-indexed;
| its elements contain the children.
| If the widget has no children, the
| array variable is assigned the type
| UNSPECIFIED.
|
"menu_position" | Array - Returns an integer-indexed array of all
| or pop-up widgets that are set for menu
| NONE positioning; returns the keyword NONE if
| none are set.
|
| The syntax of this GET_INFO call
| is as follows:
|
| GET_INFO (WIDGET, "menu_position",
| mouse_down_button)
|
"widget_id" | Widget - The widget instance corresponding to
| the widget name that you pass in as
| the fourth parameter. The widget_name
| parameter can start with the name of the
| root widget (for XUI compatibility), or
| or it can start with the name of a child
| of the root widget in the Motif
| environment. The syntax of this call is
| as follows:
|
| GET_INFO (WIDGET, "widget_id",
| {parent_widget | SCREEN},
| widget_name)
|
"widget_ | Array - An array indexed by strings that are the
resource_types" | supported widget resource data types:
| "boolean", "callback", "char",
| "compound_string",
| "compound_string_table", "int",
| "short", "unsigned_short",
| "unsigned_char"
| Each array element is another array,
| integer-indexed from 0, containing the
| names of widget resources or resource
| types that are of the specified data type.
| For example, the returned array element
| whose index is "int" is another array
| whose elements are "Int" and "Cardinal".
|
| This built-in is valid only in the
| Motif environment.
|
| The syntax of this call is as follows:
|
| GET_INFO (WIDGET, "widget_resource_types")
|
+----------------+----------------------------------------------------------+