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.
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.