所有的widgets 都可以放到一个布局上进行自动布局
布局类有三个：
QHBoxLayout---- lays out widgets horizontally from left to right(right to left for some cultures)
QVBoxLayout---- lays out widgets vertically from top to bottom
QGridLayout---- lays out widgets in a grid
添加部件时 比如定义了几个部件，直接调用addWidget() 成员函数就可以
比如：
QSlider *slider=new QSlider // 滑动杆
QSpinBox *spin= new QSpinBox
QHBoxLayout *layout=new QHBoxLayout;
layout->addWidget(slider)
layout->addWidget(spin)
这样就把QSlider 和 QSpinBox 控件添加到了布局 layout这种
下面接着要做的就是把布局添加到窗口中
使用Widget::setLayout()
如：
QWidget *window=new QWidget;
window->setLayout(layout)
- 1 #include <QApplication>
- 2 #include <QHBoxLayout>
- 3 #include <QSlider>
- 4 #include <QSpinBox>
- 5 int main(int argc, char *argv[])
- 6 {
- 7 QApplication app(argc, argv);
- 8 QWidget *window = new QWidget;
- 9 window->setWindowTitle("Enter Your Age");
- 10 QSpinBox *spinBox = new QSpinBox;
- 11 QSlider *slider = new QSlider(Qt::Horizontal);
- 12 spinBox->setRange(0, 130);
- 13 slider->setRange(0, 130);
- 14 QObject::connect(spinBox, SIGNAL(valueChanged(int)),
- 15 slider, SLOT(setValue(int)));
- 16 QObject::connect(slider, SIGNAL(valueChanged(int)),
- 17 spinBox, SLOT(setValue(int)));
- 18 spinBox->setValue(35);
- 19 QHBoxLayout *layout = new QHBoxLayout;
- 20 layout->addWidget(spinBox);
- 21 layout->addWidget(slider);
- 22 window->setLayout(layout);
- 23 window->show();
- 24 return app.exec();
- 25 }
自己写的
- #include <QtGui/QApplication>
- #include "qt.h"
- #include <qpushbutton>
- #include<QHBoxLayout>
- #include <QSlider>
- #include<QSpinBox>
- int main(int argc, char *argv[])
- {
- QApplication app(argc, argv);
- QWidget *window = new QWidget;
- window->setWindowTitle("Enter Your Age");
- QSpinBox *spinBox = new QSpinBox;
- QSlider *slider = new QSlider(Qt::Horizontal);
- spinBox->setRange(0, 130);
- slider->setRange(0, 130);
- QObject::connect(spinBox, SIGNAL(valueChanged(int)),
- slider, SLOT(setValue(int)));
- QObject::connect(slider, SIGNAL(valueChanged(int)),
- spinBox, SLOT(setValue(int)));
- spinBox->setValue(35);
- QHBoxLayout *layout = new QHBoxLayout;
- layout->addWidget(spinBox);
- layout->addWidget(slider);
- window->setLayout(layout);
- window->show();
- return app.exec();
- }