colors.py 文件源码

def paintEvent(self, event):
      qp = QPainter(self)

      qp.setPen(Qt.black)
      size = self.size()

      # Colored rectangles
      qp.setBrush(QColor(200, 0, 0))
      qp.drawRect(0, 0, 100, 100)

      qp.setBrush(QColor(0, 200, 0))
      qp.drawRect(100, 0, 100, 100)

      qp.setBrush(QColor(0, 0, 200))
      qp.drawRect(200, 0, 100, 100)

      # Color Effect
      for i in range(0,100):
          qp.setBrush(QColor(i*10, 0, 0))
          qp.drawRect(10*i, 100, 10, 32)

          qp.setBrush(QColor(i*10, i*10, 0))
          qp.drawRect(10*i, 100+32, 10, 32)

          qp.setBrush(QColor(i*2, i*10, i*1))
          qp.drawRect(10*i, 100+64, 10, 32)