Draws a horizontal line from (x1, y) to (x2, y) in window using the given style and state.
a GdkWindow
a state
rectangle to which the output is clipped, or NULL if the output should not be clipped. [allow-none]
the widget. [allow-none]
a style detail. [allow-none]
the starting x coordinate
the ending x coordinate
the y coordinate
See Implementation
Draws a horizontal line from (x1, y) to (x2, y) in window using the given style and state.