Java SWT: Change colour of line when using GC.drawline

Question

If I am drawing a line using:

GC.drawLine(int x1, int y1, int x2, int y2);

How do I change the colour of the line?

I can change the transparency by calling:

gc.setAlpha(150);

But I cannot find method of changing the colour of the line

Answer 1

绘制函数使用前景色绘制：

gc.setForeground(display.getSystemColor(SWT.COLOR_BLUE));