import_OpenGL_cube_and_cone.py 文件源码

def __init__(self, parent):
        glcanvas.GLCanvas.__init__(self, parent, -1)
        self.init = False
        self.context = glcanvas.GLContext(self)         # <== this was missing when I wrote the book in 2015...

        # initial mouse position
        self.lastx = self.x = 30
        self.lasty = self.y = 30
        self.size = None
        self.Bind(wx.EVT_ERASE_BACKGROUND, self.OnEraseBackground)
        self.Bind(wx.EVT_SIZE, self.OnSize)
        self.Bind(wx.EVT_PAINT, self.OnPaint)
        self.Bind(wx.EVT_LEFT_DOWN, self.OnMouseDown)
        self.Bind(wx.EVT_LEFT_UP, self.OnMouseUp)
        self.Bind(wx.EVT_MOTION, self.OnMouseMotion)