Symbian S60 Python 编程指南 如何创建一个应用程序

global running

running=0

appuifw.app.set_exit()

# set the screen size to large

appuifw.app.screen='large'

# define an initial image (white)

img=Image.new((176,208))

# add different shapes and text to the image

# coord. sequence x1,x2,y1,y2

img.line((20,20,20,120),0xff00ee)

img.rectangle((40,60,50,80),0xff0000)

img.point((50.,150.),0xff0000,width=40)

img.ellipse((100,150,150,180),0x0000ff)

img.text((100,80), u'hello')

# define your redraw function (that redraws the picture on and on)

# in this case we redraw the image named img using the blit function

def handle_redraw(rect):

canvas.blit(img)

running=1

# define the canvas, include the redraw callback function

canvas=appuifw.Canvas(event_callback=None, redraw_callback=handle_redraw)

# set the app.body to canvas

appuifw.app.body=canvas

app.exit_key_handler=quit

# create a loop to redraw the the screen again and again until the exit button is pressed

while running:

# redraw the screen

handle_redraw(())

# yield needs to be here in order that key pressings can be noticed

e32.ao_yield()

9,如何创建一个主循环?

把主循环放置在需要反复运行的代码位置

Python代码

1. running = 1

2. while running:

3. # #e.g. redraw the screen:

4. handle_redraw(())

1. running = 1

2. while running:

3. # #e.g. redraw the screen:

4. handle_redraw(())

示例代码：

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Python代码

# Copyright (c) 2006 Jurgen Scheible

# Application skeleton (no main loop)

import appuifw

import e32