摘要：
TheQtGui.QComboBoxis a widget that allows a user to choose from a list of options.#!/usr/bin/python# -*- coding: utf-8 -*-"""ZetCode PyQt4 tutorial Th... 阅读全文
posted @ 2015-04-17 20:13
帅胡
阅读(589)
评论(0)
推荐(0)
2015年4月17日
摘要：
AQtGui.QSplitterlets the user control the size of child widgets by dragging the boundary between the children. In our example, we show threeQtGui.QFra... 阅读全文
posted @ 2015-04-17 20:12
帅胡
阅读(706)
评论(0)
推荐(0)
摘要：
AQtGui.QLineEditis a widget that allows to enter and edit a single line of plain text. There are undo and redo, cut and paste, and drag & drop functio... 阅读全文
posted @ 2015-04-17 20:11
帅胡
阅读(677)
评论(0)
推荐(0)
摘要：
AQtGui.QPixmapis one of the widgets used to work with images. It is optimized for showing images on screen. In our code example, we will use theQtGui.... 阅读全文
posted @ 2015-04-17 20:09
帅胡
阅读(1546)
评论(0)
推荐(0)
摘要：
AQtGui.QCalendarWidgetprovides a monthly based calendar widget. It allows a user to select a date in a simple and intuitive way.#!/usr/bin/python# -*-... 阅读全文
posted @ 2015-04-17 19:06
帅胡
阅读(1067)
评论(0)
推荐(0)
摘要：
A progress bar is a widget that is used when we process lengthy tasks. It is animated so that the user knows that the task is progressing. TheQtGui.QP... 阅读全文
posted @ 2015-04-17 19:05
帅胡
阅读(524)
评论(0)
推荐(0)
摘要：
AQtGui.QSlideris a widget that has a simple handle. This handle can be pulled back and forth. This way we are choosing a value for a specific task. So... 阅读全文
posted @ 2015-04-17 19:03
帅胡
阅读(716)
评论(0)
推荐(0)
摘要：
A toggle button is aQtGui.QPushButtonin a special mode. It is a button that has two states: pressed and not pressed. We toggle between these two state... 阅读全文
posted @ 2015-04-17 19:01
帅胡
阅读(458)
评论(0)
推荐(0)
摘要：
AQtGui.QCheckBoxis a widget that has two states: on and off. It is a box with a label. Check boxes are typically used to represent features in an appl... 阅读全文
posted @ 2015-04-17 19:00
帅胡
阅读(1018)
评论(0)
推荐(0)
摘要：
TheQtGui.QFileDialogis a dialog that allows users to select files or directories. The files can be selected for both opening and saving.#!/usr/bin/pyt... 阅读全文
posted @ 2015-04-17 18:33
帅胡
阅读(730)
评论(0)
推荐(0)
摘要：
TheQtGui.QFontDialogis a dialog widget for selecting a font.#!/usr/bin/python# -*- coding: utf-8 -*-"""ZetCode PyQt4 tutorial In this example, we sele... 阅读全文
posted @ 2015-04-17 18:32
帅胡
阅读(688)
评论(0)
推荐(0)
摘要：
heQtGui.QColorDialogprovides a dialog widget for selecting colour values.#!/usr/bin/python# -*- coding: utf-8 -*-"""ZetCode PyQt4 tutorial In this exa... 阅读全文
posted @ 2015-04-17 18:31
帅胡
阅读(752)
评论(0)
推荐(0)
摘要：
TheQtGui.QInputDialogprovides a simple convenience dialog to get a single value from the user. The input value can be a string, a number or an item fr... 阅读全文
posted @ 2015-04-17 18:30
帅胡
阅读(537)
评论(0)
推荐(0)
摘要：
Objects created from aQtCore.QObjectcan emit signals. In the following example we will see how we can emit custom signals.#!/usr/bin/python# -*- codin... 阅读全文
posted @ 2015-04-17 17:37
帅胡
阅读(262)
评论(0)
推荐(0)
摘要：
Sometimes it is convenient to know which widget is the sender of a signal. For this, PyQt4 has thesender()method.#!/usr/bin/python# -*- coding: utf-8 ... 阅读全文
posted @ 2015-04-17 17:35
帅胡
阅读(400)
评论(0)
推荐(0)
摘要：
Events in PyQt4 are processed often by reimplementing event handlers.#!/usr/bin/python# -*- coding: utf-8 -*-"""ZetCode PyQt4 tutorial In this example... 阅读全文
posted @ 2015-04-17 17:34
帅胡
阅读(340)
评论(0)
推荐(0)
摘要：
All GUI applications are event-driven. Events are generated mainly by the user of an application. But they can be generated by other means as well: e.... 阅读全文
posted @ 2015-04-17 17:33
帅胡
阅读(308)
评论(0)
推荐(0)
摘要：
Widgets can span multiple columns or rows in a grid. In the next example we illustrate this.#!/usr/bin/python# -*- coding: utf-8 -*-"""ZetCode PyQt4 t... 阅读全文
posted @ 2015-04-17 17:23
帅胡
阅读(516)
评论(0)
推荐(0)
摘要：
The most universal layout class is the grid layout. This layout divides the space into rows and columns. To create a grid layout, we use theQtGui.QGri... 阅读全文
posted @ 2015-04-17 17:22
帅胡
阅读(935)
评论(0)
推荐(0)
摘要：
Layout management with layout classes is much more flexible and practical. It is the preferred way to place widgets on a window. TheQtGui.QHBoxLayouta... 阅读全文
posted @ 2015-04-17 17:21
帅胡
阅读(321)
评论(0)
推荐(0)
摘要：
The programmer specifies the position and the size of each widget in pixels. When you use absolute positioning, we have to understand the following li... 阅读全文
posted @ 2015-04-17 17:20
帅胡
阅读(325)
评论(0)
推荐(0)
摘要：
In the last example of this section, we create a menubar, a toolbar and a statusbar. We also create a central widget.#!/usr/bin/python# -*- coding: ut... 阅读全文
posted @ 2015-04-17 17:00
帅胡
阅读(613)
评论(0)
推荐(0)
摘要：
Menus group all commands that we can use in an application. Toolbars provide a quick access to the most frequently used commands.#!/usr/bin/python# -*... 阅读全文
posted @ 2015-04-17 16:57
帅胡
阅读(392)
评论(0)
推荐(0)
摘要：
A menubar is a common part of a GUI application. It is a group of commands located in various menus.#!/usr/bin/python# -*- coding: utf-8 -*-"""ZetCode... 阅读全文
posted @ 2015-04-17 16:55
帅胡
阅读(568)
评论(0)
推荐(0)
摘要：
Main windowTheQtGui.QMainWindowclass provides a main application window. This enables to create a classic application skeleton with a statusbar, toolb... 阅读全文
posted @ 2015-04-17 16:52
帅胡
阅读(619)
评论(0)
推荐(0)
摘要：
The following script shows how we can center a window on the desktop screen.#!/usr/bin/python# -*- coding: utf-8 -*-"""ZetCode PyQt4 tutorial This pro... 阅读全文
posted @ 2015-04-17 16:50
帅胡
阅读(303)
评论(0)
推荐(0)
摘要：
By default, if we click on the x button on the titlebar, theQtGui.QWidgetis closed. Sometimes we want to modify this default behaviour. For example, i... 阅读全文
posted @ 2015-04-17 16:49
帅胡
阅读(415)
评论(0)
推荐(0)
摘要：
The obvious way to how to close a window is to click on the x mark on the titlebar. In the next example, we will show how we can programatically close... 阅读全文
posted @ 2015-04-17 16:48
帅胡
阅读(365)
评论(0)
推荐(0)
摘要：
import htmlhtml.escape(s, quote=True)对特殊字符进行转义Convert the characters &, in string s to HTML-safe sequences. Use this if you need to display text that... 阅读全文
posted @ 2015-04-17 14:46
帅胡
阅读(583)
评论(0)
推荐(0)
摘要：
We can provide a balloon help for any of our widgets.#!/usr/bin/python# -*- coding: utf-8 -*-"""ZetCode PyQt4 tutorial This example shows a tooltip on... 阅读全文
posted @ 2015-04-17 12:32
帅胡
阅读(455)
评论(0)
推荐(0)
摘要：
The application icon is a small image which is usually displayed in the top left corner of the titlebar. In the following example we will show how we ... 阅读全文
posted @ 2015-04-17 11:25
帅胡
阅读(323)
评论(0)
推荐(0)
摘要：
This is a simple example showing a small window. Yet we can do a lot with this window. We can resize it, maximise it, or minimise it. This requires a ... 阅读全文
posted @ 2015-04-17 11:19
帅胡
阅读(494)
评论(0)
推荐(0)
摘要：
Java™ Platform, Standard Edition 6 (Java SE) 专注于提升性能，提供的增强工具可以管理和监视应用程序以及诊断常见的问题。本文将介绍 Java SE 平台中监视和管理的基本知识，并提供 Java SE 6 中相关增强的详细信息。Java SE 6 对性能进行了... 阅读全文
posted @ 2015-04-17 11:07
帅胡
阅读(221)
评论(0)
推荐(0)
摘要：
VisualVM 是一款免费的\集成了多个 JDK 命令行工具的可视化工具，它能为您提供强大的分析能力，对 Java 应用程序做性能分析和调优。这些功能包括生成和分析海量数据、跟踪内存泄漏、监控垃圾回收器、执行内存和 CPU 分析，同时它还支持在 MBeans 上进行浏览和操作。本文主要介绍如何使用... 阅读全文
posted @ 2015-04-17 10:49
帅胡
阅读(332)
评论(0)
推荐(0)
浙公网安备 33010602011771号