问题描述
将我的头撞到显示器上两个小时后，我意识到:
After crashing my head against the monitor for 2 hours I realised that:
display.blit(mypic, posx, posy)
pygame.display.update()
除非我打电话给我，否则
就是行不通的(即不会在屏幕上显示任何内容).
would just not work (i.e. wouldn't blit anything on the screen) unless I call:
pygame.event.get()
这是地球上最怪异的虫子，还是我错过了什么?
Is this the weirdest bug on earth, or am I missing something?
我正在python 2.7上运行pygame，mac os high sierra，是的，如果这是由于pygame和mac os之间的不兼容，那么我将最不惊讶.
I'm running pygame on python 2.7, mac os high sierra,and yes I would be the least surprised if this was due to the goddam incompatibility between pygame and mac os.
关于这里出了什么问题的任何提示吗?
示例代码:
import pygame
winWidth = 800
winHeight = 600
posx = 200; posy = 200
mypic = pygame.image.load("path_to_my_picture.jpg")
COL_BACKGROUND = (255,255,255)
DISPLAYSURF = pygame.display.set_mode((winWidth, winHeight))
pygame.init()
display.fill(COL_BACKGROUND)
display.blit(mypic, posx, posy)
# only including the following line it will blit the picture:
# pygame.event.get()
pygame.display.update()
推荐答案
我不确定100％是否与mac兼容，但是我假设它与Windows相似，如果您不定期调用pygame.event.get()操作系统认为该窗口已停止响应，并且不再更新它.
I'm not 100% sure how it works with mac but I am assuming it is similar to windows in that if you don't call pygame.event.get() regularly the operating system thinks that the window has stopped responding and no longer updates it.
在 pygame.event.pump()下提及在Pygame文档的事件页面中
This is mentioned under pygame.event.pump() in the events page of the Pygame documentation
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