QT QGridLayout QHBoxLayout QVBoxLayout 布局管理器运用

QWidget* widget = new QWidget;

widget->setFixedSize(350,300);

widget->setWindowTitle("UnicomMini");

//设置支持中文

QTextCodec *codec = QTextCodec::codecForName("System");

QTextCodec::setCodecForLocale(codec);

QTextCodec::setCodecForTr(codec);

QTextCodec::setCodecForCStrings(codec);

QLabel* srceenAreaLabel = new QLabel(QObject::tr("屏幕区"), widget);

QGridLayout* centerBtnLayout = new QGridLayout;

// centerBtnLayout->addStretch();

QPushButton* chongzhiBtn = new QPushButton(QObject::tr("充值缴费"), widget);

QPushButton* yuechaxunBtn = new QPushButton(QObject::tr("余额查询"), widget);

QPushButton* zhangdanchaxunBtn = new QPushButton(QObject::tr("账单查询"), widget);

QPushButton* detailchaxunBtn = new QPushButton(QObject::tr("详细查询"),  widget);

QPushButton* buycardBtn = new QPushButton(QObject::tr("买电子卡"), widget);

QPushButton* syssettingBtn = new QPushButton(QObject::tr("系统设置"), widget);

centerBtnLayout->addWidget(chongzhiBtn,0,0,1,1);

centerBtnLayout->addWidget(yuechaxunBtn,0,1,1,1);

centerBtnLayout->addWidget(zhangdanchaxunBtn,1,0,1,1);

centerBtnLayout->addWidget(detailchaxunBtn,1,1,1,1);

centerBtnLayout->addWidget(buycardBtn,2,0,1,1);

centerBtnLayout->addWidget(syssettingBtn,2,1,1,1);

centerBtnLayout->setContentsMargins(40,1, 40, 0);   // 设置下距离边框的距离

QLabel* keyAreaLabel = new QLabel(QObject::tr("键盘区"), widget);

QHBoxLayout* hKeyAreaLayout = new QHBoxLayout;

QStringList btnsTextList;

btnsTextList<<"0"<<"1"<<"2"<<"3"<<"4"<<"5"<<"6"<<"7"<<"8"<<"9"<<"<-";

for( int i= 0; i< 11; i++)

{

QPushButton* btn = new QPushButton(btnsTextList.at(i), widget );

btn->setFixedSize(25,25);

hKeyAreaLayout->addWidget(btn);

}

QGridLayout* direction = new QGridLayout;

QPushButton* topBtn = new QPushButton(QObject::tr("上"),widget);

QPushButton* leftBtn = new QPushButton(QObject::tr("左"),widget);

QPushButton* downBtn = new QPushButton(QObject::tr("下"),widget);

QPushButton* rightBtn = new QPushButton(QObject::tr("右"),widget);

direction->addWidget(topBtn, 0,1, 1,1);

direction->addWidget(leftBtn, 1,0, 1,1);

direction->addWidget(downBtn, 1,1, 1,1);

direction->addWidget(rightBtn, 1,2, 1,1);

QVBoxLayout* mainLayout = new QVBoxLayout;

mainLayout->addWidget(srceenAreaLabel);

mainLayout->addLayout(centerBtnLayout);

mainLayout->addWidget(keyAreaLabel);

mainLayout->addLayout(hKeyAreaLayout);

mainLayout->setSpacing(10);

mainLayout->addLayout(direction);

widget->setLayout(mainLayout);

widget->show();