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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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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