XmWidgetGetBaselines returns an array that
contains one or more baseline values associated with the
specified widget. The baseline of any given line of text
is a vertical offset in pixels from the origin of the
widget's bounding box to the given baseline. This routine
allocates memory for the returned data. The application must free
this memory using XtFree.
widget
Specifies the ID of the widget for which baseline values
are requested
baselines
Returns an array that contains the value of each
baseline of text in the widget
line_count
Returns the number of lines in the widget
Return value
Returns a Boolean value that indicates whether the
widget contains a baseline. If True, the function returns
a value for each baseline of text. If False, the function
was unable to return a baseline value.