Qt版面配置管理（QLayout）-4

範例1：增加下拉式選單（Combo Box）,堆疊排版

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)

{

    QLabel *label1 = new QLabel("Lable1");

    QWidget *pageWidget1 = new QWidget;

    QVBoxLayout *layout1 = new QVBoxLayout();

    layout1->addWidget(label1);

    pageWidget1->setLayout(layout1);

    QLabel *label2 = new QLabel("Lable2");

    QWidget *pageWidget2 = new QWidget;

    QVBoxLayout *layout2 = new QVBoxLayout();

    layout2->addWidget(label2);

    pageWidget2->setLayout(layout2);

    QStackedLayout *stackedLayout = new QStackedLayout;

    stackedLayout->addWidget(pageWidget1);

    stackedLayout->addWidget(pageWidget2);

    QComboBox *pageComboBox = new QComboBox;

    pageComboBox->addItem(tr("Set Lable1"));

    pageComboBox->addItem(tr("Set Lable2"));

    connect(pageComboBox, SIGNAL(activated(int)),

            stackedLayout, SLOT(setCurrentIndex(int)));

    QVBoxLayout *mainLayout = new QVBoxLayout;

    mainLayout->addWidget(pageComboBox);

    mainLayout->addLayout(stackedLayout);

    setLayout(mainLayout);

}

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：

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：

Qt版面配置管理（QLayout）-2

範例1：增加按鈕（Push Button）,垂直排版

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;

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

    button2 = new QPushButton(tr("NO"));

    QVBoxLayout *layout = new QVBoxLayout;

    layout->addWidget(button1);

    layout->addWidget(button2);

    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：

Qt版面配置管理（QLayout）-1

Qt設計視窗的版面規劃有兩種方式,一種是Qt設計器（Qt Designer）規劃,另外一種就是Qt版面配置管理器（QLayout）,我在這裡紀錄一下使用版面配置管理器程式範例.
範例1：增加按鈕（Push Button）,水平排版

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;

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

    button2 = new QPushButton(tr("NO"));

    QHBoxLayout *layout = new QHBoxLayout;

    layout->addWidget(button1);

    layout->addWidget(button2);

    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：