TmLegend Procedure
Adds a legend to a VDA Tool. The exact size and position of the legend is determined interactively by the user.
Usage
TmLegend, tool_name
Parameters
tool_name—A string containing the unique name of a VDA Tool.
Keywords
None.
Discussion
TmLegend is a graphical element (GRAEL) routine. GRAELs are predefined graphics routines used by VDA Tools. These routines allow you to add, configure, and remove graphical elements in the VDA Tool display area. The standard set of GRAELs includes axes, text, bitmaps, legends, lines, and rectangles. This standard set is accessible from the standard VDA Tool menu bar and button bar, which are provided by the VDA Utility routines
WoMenuBar Function on page 1670 and
WoButtonBar Function on page 1620.
To draw a legend, the user presses and drags MB1 to define the legend border.
Example
The following example code is a callback routine for a menu bar. This callback executes TmLegend in response to a menu selection.
PRO CreateLegendCB, wid, index
tool_name = GetMenuBarToolName(wid)
toggle_buttons = ['dataselect', 'graelselect', 'text', $
'line', 'rectangle', 'legend']
buttons_up = [0, 0, 0, 0, 0, 0]
WoButtonBarSet, tool_name, toggle_buttons, buttons_up
WoButtonBarSet, tool_name, 'legend', 1
WoAddMessage, tool_name, 'MSG_LegendCreate', /Clear
WoAddStatus, tool_name, 'MSG_LegendCreateStatus', $
Item='STATUS2'
TmLegend, tool_name
END
See Also
