X coordinate of underline, in Pango units in user coordinate system
Y coordinate of underline, in Pango units in user coordinate system
width of underline, in Pango units in user coordinate system
height of underline, in Pango units in user coordinate system
1.8
Draw a squiggly line 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.
This should be called while @renderer is already active. Use [method@Pango.Renderer.activate] to activate a renderer.