Qt版面配置管理（QLayout）-3

範例1：增加按鈕（Push Button）,格子排版

1. Helloworld.pro

TARGET = helloworld

SOURCES += main.cpp \

    layoutdlg.cpp

HEADERS  += \

    layoutdlg.h

FORMS    += dialog.ui

2. main.cpp

#include <QtGui>

#include <QtCore>

#include "layoutdlg.h"

int main(int argc, char* argv[])

{

    QApplication app(argc, argv);

    layoutdlg helloworld;

    helloworld.show();

    return app.exec();

}

3. layoutdlg.cpp

#include <QtGui>

#include "layoutdlg.h"

layoutdlg::layoutdlg(QDialog *parent)

 : QDialog(parent)

{

    QPushButton *button1, *button2, *button3, *button4;

    button1 = new QPushButton(tr("1"));

    button2 = new QPushButton(tr("2"));

    button3 = new QPushButton(tr("3"));

    button4 = new QPushButton(tr("4"));

    QGridLayout *layout = new QGridLayout;

    layout->addWidget(button1, 0, 0);

    layout->addWidget(button2, 0, 1);

    layout->addWidget(button3, 1, 0);

    layout->addWidget(button4, 1, 1);

    setLayout(layout);

}

4. layoutdlg.h

#ifndef LAYOUTDLG_H

#define LAYOUTDLG_H

#include <QDialog>

class QPushButton;

class layoutdlg  :  public QDialog

{

    Q_OBJECT

public:

    layoutdlg(QDialog *parent = 0);

};

#endif // LAYOUTDLG_H

顯示結果：