ET++: GrLine

Though it is possible to draw directly on a particular Port, ET++ provides a global "current Port" and a set of interface functions to simplify the drawing interface. These functions correspond to the public methods in Port, and the functions call the Port method on the current Port. Thus it is possible to draw a line on the current Port without knowing what the current is, or the name of the global current Port, or anything about Ports at all. To draw a line, the application can call GrLine, shown below, which calls StrokeLine on the current Port (Port::port), with appropriate pen values.

inline void GrLine(const Point &p1, const Point &p2)
	{ Port::port->StrokeLine(Port::port->penink, Port::port->pensize,
				Port::port->pencap, p1, p2); }

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