Qt代码创建布局

Posted 2022-03-02 yaked

代码与布局

创建一个类似Win+R的小窗口

#include <QApplication>
#include <QLineEdit>
#include <QPushButton>
#include <QLabel>

#include <QtWidgets>
#include <QHBoxLayout>
#include <QVBoxLayout>

int main(int argc, char **  argv)

    QApplication app(argc, argv);
    QLabel *infoLabel=new QLabel;
    QLabel * cmdlabel = new QLabel;
    QLineEdit * cmdlineEdit = new QLineEdit;

    QPushButton *submitButton = new QPushButton;
    QPushButton * cancelButton =new QPushButton;
    QPushButton * browerButton = new QPushButton;

    infoLabel->setText("Please input command in lineEdit");
    cmdlabel ->setText("Open");

    cmdlineEdit ->clear();
    submitButton->setText("Submit");
    cancelButton->setText("Cancel");
    browerButton->setText("Browser");

    QHBoxLayout *cmdlayout = new QHBoxLayout;
    cmdlayout->addWidget(cmdlabel);
    cmdlayout->addWidget(cmdlineEdit);

    QHBoxLayout* buttonLayout = new QHBoxLayout;
    buttonLayout->addWidget(submitButton);
    buttonLayout->addWidget(cancelButton);
    buttonLayout->addWidget(browerButton);

    QVBoxLayout* mainLayout=new QVBoxLayout;
    mainLayout->addWidget(infoLabel);

    mainLayout->addLayout(cmdlayout); // Former created layout.
    mainLayout->addLayout(buttonLayout);

    // Main window
    QWidget *w = new QWidget;
    w->setLayout(mainLayout);
    w->setWindowTitle("Main window");
    w->show();

    return  app.exec();

首先创建界面上所有的元素，再设属性，布局。