[ Version ( since = "1.14" ) ]
public void cairo_show_error_underline (Context cr, double x, double y, double width, double height)
Draw a squiggly line in the specified cairo context that approximately covers the given rectangle in the style of an underline used to indicate a spelling error.
The width of the underline is rounded to an integer number of up/down segments and the resulting rectangle is centered in the original rectangle.
a Cairo context
The X coordinate of one corner of the rectangle
The Y coordinate of one corner of the rectangle
Non-negative width of the rectangle
Non-negative height of the rectangle