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wxPython package and rename wxFooBar --> FooBar. That means that people imports without "import *" and can use names like wx.Frame instead of wx.wxFrame. This is phase 1 of a full transition to the new namespace. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@19975 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
208 lines
7.9 KiB
HTML
208 lines
7.9 KiB
HTML
<?xml version="1.0" encoding="utf-8" ?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="generator" content="Docutils 0.2.8: http://docutils.sourceforge.net/" />
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<title>Example Programs Using wxPython</title>
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<meta name="author" content="Patrick K. O'Brien" />
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<meta name="date" content="2003-03-21" />
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<link rel="stylesheet" href="default.css" type="text/css" />
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</head>
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<body>
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<div class="document" id="example-programs-using-wxpython">
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<h1 class="title">Example Programs Using wxPython</h1>
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<h2 class="subtitle" id="a-survival-guide-for-the-post-wx-prefixed-world">A survival guide for the post-wx-prefixed world.</h2>
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<table class="docinfo" frame="void" rules="none">
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<col class="docinfo-name" />
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<col class="docinfo-content" />
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<tbody valign="top">
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<tr><th class="docinfo-name">Author:</th>
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<td>Patrick K. O'Brien</td></tr>
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<tr><th class="docinfo-name">Contact:</th>
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<td><a class="first last reference" href="mailto:pobrien@orbtech.com">pobrien@orbtech.com</a></td></tr>
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<tr><th class="docinfo-name">Date:</th>
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<td>2003-03-21</td></tr>
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<tr><th class="docinfo-name">Revision:</th>
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<td>1.1</td></tr>
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</tbody>
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</table>
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<div class="contents topic" id="contents">
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<p class="topic-title"><a name="contents">Contents</a></p>
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<ul class="simple">
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<li><a class="reference" href="#introduction" id="id1" name="id1">Introduction</a></li>
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<li><a class="reference" href="#basic" id="id2" name="id2">Basic</a></li>
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<li><a class="reference" href="#hello" id="id3" name="id3">Hello</a></li>
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</ul>
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</div>
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<div class="section" id="introduction">
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<h1><a class="toc-backref" href="#id1" name="introduction">Introduction</a></h1>
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<p>If something hits you on the head, don't run around screaming that the
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sky is falling. Instead, take a close look and see if it wasn't a
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"wx" prefix that hit you. Apparently, they're dropping off wxPython
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class names like flies dropping dead in the scorching heat of a
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summer's day.</p>
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<p>Yes, the world is changing, and even our little wxPython world must
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change with it. Then again, I'm not fond of pesky summertime flies,
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and I'm not too upset that the "wx" prefixes are going to bite the
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dust. I think it's for the best. But, being the kind, considerate
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person that I am, I decided to write this guide to make the wx
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namespace transition easier for everyone, even Chicken Little.</p>
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<div class="sidebar">
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<p class="sidebar-title">Say what?</p>
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<p>If you have no idea what I mean by the "wx namespace transition,"
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consider yourself lucky. You can simply use these examples to
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learn wxPython in its current state. All you need to know is that
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previous wxPython code used a slightly different syntax that some
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folks (including me) considered ugly. So we changed it. And
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that's when the sky starting falling...</p>
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</div>
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<p>Rather than simply <strong>tell</strong> you that everything will be okay, I
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decided to <strong>show</strong> you that everything will be okay. To do that,
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I've created a bunch of example programs using the new wx package. I
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hope you like them.</p>
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</div>
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<div class="section" id="basic">
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<h1><a class="toc-backref" href="#id2" name="basic">Basic</a></h1>
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<p>It doesn't get much simpler than this. Every wxPython program needs
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an application and a frame. To encourage good coding habits, I've
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split them into separate modules. They don't do much, but they're a
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good starting point.</p>
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<p>I include a simple App class in the frame module because the PyCrust
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"wrapper" utility (<tt class="literal"><span class="pre">wrap.py</span></tt>) only works with modules that contain
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an application class. So including a simple one in each of your frame
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modules allows you to use the PyCrust runtime wrapper and debug your
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frames independent of your full application.</p>
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<p>Here is the module (<tt class="literal"><span class="pre">frame.py</span></tt>) that defines the frame class:</p>
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<pre class="literal-block">
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#!/usr/bin/env python
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"""Basic frame class, with App for testing."""
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__author__ = "Patrick K. O'Brien <pobrien@orbtech.com>"
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__cvsid__ = "$Id$"
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__revision__ = "$Revision$"[11:-2]
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import wx
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class Frame(wx.Frame):
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"""Frame class."""
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def __init__(self, parent=None, id=-1, title='Title',
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pos=wx.DefaultPosition, size=(400, 200)):
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"""Create a Frame instance."""
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wx.Frame.__init__(self, parent, id, title, pos, size)
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class App(wx.App):
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"""Application class."""
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def OnInit(self):
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self.frame = Frame()
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self.frame.Show()
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self.SetTopWindow(self.frame)
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return True
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def main():
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app = App()
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app.MainLoop()
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if __name__ == '__main__':
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main()
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</pre>
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<p>And here is the module (<tt class="literal"><span class="pre">app.py</span></tt>) that defines the application class
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and imports the frame from <tt class="literal"><span class="pre">frame.py</span></tt>:</p>
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<pre class="literal-block">
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#!/usr/bin/env python
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"""Basic application class."""
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__author__ = "Patrick K. O'Brien <pobrien@orbtech.com>"
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__cvsid__ = "$Id$"
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__revision__ = "$Revision$"[11:-2]
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import wx
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from frame import Frame
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class App(wx.App):
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"""Application class."""
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def OnInit(self):
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self.frame = Frame()
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self.frame.Show()
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self.SetTopWindow(self.frame)
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return True
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def main():
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app = App()
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app.MainLoop()
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if __name__ == '__main__':
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main()
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</pre>
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</div>
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<div class="section" id="hello">
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<h1><a class="toc-backref" href="#id3" name="hello">Hello</a></h1>
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<p>This program displays an image file (<tt class="literal"><span class="pre">wxPython.jpg</span></tt>) inside a frame
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sized to match the graphic.</p>
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<div class="figure">
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<p><img alt="screenshots/hello-win98.png" scale="100" src="screenshots/hello-win98.png" /></p>
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<p class="caption">Running <tt class="literal"><span class="pre">hello.py</span></tt> on Windows.</p>
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</div>
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<div class="figure">
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<p><img alt="screenshots/hello-linux.png" scale="100" src="screenshots/hello-linux.png" /></p>
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<p class="caption">Running <tt class="literal"><span class="pre">hello.py</span></tt> on Linux.</p>
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</div>
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<div class="figure">
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<p><img alt="screenshots/hello-mac.png" scale="100" src="screenshots/hello-mac.png" /></p>
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<p class="caption">Running <tt class="literal"><span class="pre">hello.py</span></tt> on Mac OS X.</p>
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</div>
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<p>Here is the source code for <tt class="literal"><span class="pre">hello.py</span></tt>:</p>
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<pre class="literal-block">
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#!/usr/bin/env python
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"""Hello, wxPython! program."""
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__author__ = "Patrick K. O'Brien <pobrien@orbtech.com>"
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__cvsid__ = "$Id$"
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__revision__ = "$Revision$"[11:-2]
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import wx
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class Frame(wx.Frame):
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"""Frame class that displays an image."""
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def __init__(self, image, parent=None, id=-1,
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pos=wx.DefaultPosition, title='Hello, wxPython!'):
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"""Create a Frame instance and display image."""
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temp = image.ConvertToBitmap()
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size = temp.GetWidth(), temp.GetHeight()
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wx.Frame.__init__(self, parent, id, title, pos, size)
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self.bmp = wx.StaticBitmap(parent=self, id=-1, bitmap=temp)
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class App(wx.App):
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"""Application class."""
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def OnInit(self):
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wx.InitAllImageHandlers()
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image = wx.Image('wxPython.jpg', wx.BITMAP_TYPE_JPEG)
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self.frame = Frame(image)
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self.frame.Show()
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self.SetTopWindow(self.frame)
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return True
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def main():
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app = App()
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app.MainLoop()
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if __name__ == '__main__':
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main()
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</pre>
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</div>
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</div>
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</body>
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</html>
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