wx The classes in this module are the most commonly used classes for wxPython, which is why they have been made visible in the core wx namespace. Everything you need for building typical GUI applications is here. Class Summary Class Short Description…
wx.Frame A frame is a window whose size and position can (usually) be changed by the user. It usually has thick borders and a title bar, and can optionally contain a menu bar, toolbar and status bar. A frame can contain any window that is not a frame…
wx.BookCtrlBase A book control is a convenient way of displaying multiple pages of information, displayed one page at a time. wxWidgets has five variants of this control: wx.Choicebook: controlled by a wx.Choice wx.Listbook: controlled by a wx.ListCt…
[翻译]The Layout System 布局 In Sencha Touch there are two basic building blocks: componentsand containers. When you instantiate both with no configuration, they look the same. However, there is one important difference: containers can containcomponents…
原文:Exploring the Layout System in Ext JS 5 and Sencha Touch 布局系统是Sencha框架中最强大和最有特色的一个部分. 布局要处理应用程序中每一个组件的尺寸和位置.在Ext JS和Sencha Touch直接有很多相似之处.尤其是如今Ext JS 5開始支持平板更是如此.以下让我们来探讨一下布局系统是怎样跨域Sencha框架进行工作的. 布局简史 最主要的HTML一直都缺乏一个严格定义的布局系统. 很多年来,因为CSS实现的差距.开发跨浏…
Anatomy of a Program in Memory 在一个多任务OS中,每个进程都运行在它自己的内存沙箱中.这个沙箱就是虚拟地址空间,在32位下就是一块容量为4GB的内存地址.内核将这些虚拟地址按页表(page table)映射为物理内存,并交由CPU访问.每个进程有自己的页表集,但有一点要注意.虚拟地址一旦被启用,就会应用到机器上所有运行的程序上,也包括内核自己.因此虚拟地址空间必须为内核预留一部分(否则就没办法和内核交互了): 给内核预留那么多空间,并不是说内核真的使用了那么多物理…