动态布局范例 ¶

To begin with, the application creates the UI components by calling the following methods:

• createRotatableGroupBox()

• createOptionsGroupBox()

• createButtonBox()

It then adds the UI components to a GridLayout ( mainLayout ).

最后， Dialog::rotateWidgets() 被调用。

createRotatableGroupBox() method creates a rotatable group box, then adds a series of widgets:

• QSpinBox

• QSlider

• QDial

• QProgressBar

It goes on to add signals and slots to each widget, and assigns a QGridLayout called rotatableLayout .

createOptionsGroupBox() creates the following widgets:

• optionsGroupBox

• buttonsOrientationLabel

• buttonsOrientationComboBox . The orientation of the ComboBox is either horizontal (default value) or vertical . These two values are added during the startup of the application. It is not possible to leave the option empty.

createButtonBox() constructs a QDialogButtonBox called buttonBox to which are added a closeButton ， helpButton 和 rotateWidgetsButton . It then assigns a signal and a slot to each button in buttonBox .

Removes the current widgets and activates the next widget.

要运行范例从 Qt Creator ，打开 欢迎 模式，然后选择范例从 范例 . For more information, visit Building and Running an Example.

范例工程 @ code.qt.io