Qt实践-基于C++的UI设计基础

学习网址：http://c.biancheng.net/view/1824.html

我的代码：

头文件qwdlgmanual.h：

 #ifndef QWDLGMANUAL_H
 #define QWDLGMANUAL_H

 #include <QDialog>
 #include <QPushButton>
 #include <QRadioButton>
 #include <QCheckBox>
 #include <QPlainTextEdit>
 #include <QBoxLayout>

 class QWDlgManual : public QDialog
 {
     Q_OBJECT

 public:
     QWDlgManual(QWidget *parent = nullptr);
     ~QWDlgManual();

 private slots:
     void on_setUnderline(bool checked);
     void on_setBold(bool checked);
     void on_setItalic(bool checked);
     void ColorSet();

 private:
     QRadioButton* rbtnred;
     QRadioButton* rbtnblue;
     QRadioButton* rbtnblack;
     QCheckBox* ckboxBold;
     QCheckBox* ckboxItalic;
     QCheckBox* ckboxUnder;
     QPushButton* btnClose;
     QPushButton* btnOK;
     QPlainTextEdit* textEdit;
     void initialSignalSlots();
     void initialUI();
 };
 #endif // QWDLGMANUAL_H

qwdlgmanual.cpp：

 #include "qwdlgmanual.h"

 QWDlgManual::QWDlgManual(QWidget *parent)
     : QDialog(parent)
 {
     initialUI();
     initialSignalSlots();
     setWindowTitle("Form");
 }

 QWDlgManual::~QWDlgManual()
 {
 }

 void QWDlgManual::on_setUnderline(bool checked)
 {
     QFont font=textEdit->font();
     font.setUnderline(checked);
     textEdit->setFont(font);
 }

 void QWDlgManual::on_setBold(bool checked)
 {
     QFont font=textEdit->font();
     font.setBold(checked);
     textEdit->setFont(font);
 }

 void QWDlgManual::on_setItalic(bool checked)
 {
     QFont font=textEdit->font();
     font.setItalic(checked);
     textEdit->setFont(font);
 }

 void QWDlgManual::ColorSet()
 {
     QPalette palte=textEdit->palette();
     if(rbtnred->isChecked())
         palte.setColor(QPalette::Text,Qt::red);
     else if(rbtnblue->isChecked())
         palte.setColor(QPalette::Text,Qt::blue);
     else if(rbtnblack->isChecked())
         palte.setColor(QPalette::Text,Qt::black);
     textEdit->setPalette(palte);
 }

 void QWDlgManual::initialSignalSlots()
 {
     connect(rbtnred,SIGNAL(clicked()),this,SLOT(ColorSet()));
     connect(rbtnblue,SIGNAL(clicked()),this,SLOT(ColorSet()));
     connect(rbtnblack,SIGNAL(clicked()),this,SLOT(ColorSet()));
     //radiobutton与槽函数的链接
     connect(ckboxBold,SIGNAL(clicked(bool)),this,SLOT(on_setBold(bool)));
     connect(ckboxUnder,SIGNAL(clicked(bool)),this,SLOT(on_setUnderline(bool)));
     connect(ckboxItalic,SIGNAL(clicked(bool)),this,SLOT(on_setItalic(bool)));
     //checkbutton与槽函数的链接
     connect(btnOK,SIGNAL(clicked()),this,SLOT(accept()));
     connect(btnClose,SIGNAL(clicked()),this,SLOT(close()));
     //pushbutton与槽函数的链接
 }

 void QWDlgManual::initialUI()
 {
     ckboxBold = new QCheckBox(tr("Bold"));
     ckboxItalic = new QCheckBox(tr("Itlic"));
     ckboxUnder = new QCheckBox(tr("Underline"));
     QHBoxLayout* Hey=new QHBoxLayout;
     Hey->addWidget(ckboxBold);
     Hey->addWidget(ckboxItalic);
     Hey->addWidget(ckboxUnder);
     //增加更改字体的CheckBox
     rbtnred = new QRadioButton(tr("Red"));
     rbtnblue = new QRadioButton(tr("Blue"));
     rbtnblack = new QRadioButton(tr("Black"));
     QHBoxLayout* Hsy=new QHBoxLayout;
     Hsy->addWidget(rbtnred);
     Hsy->addWidget(rbtnblue);
     Hsy->addWidget(rbtnblack);
     //增加更改颜色的RadioButton
     btnOK = new QPushButton(tr("确定"));
     btnClose = new QPushButton(tr("关闭"));
     QHBoxLayout* Hty=new QHBoxLayout;
     Hty->addStretch();
     Hty->addWidget(btnOK);
     Hty->addWidget(btnClose);
     //添加确认与退出按键
     textEdit = new QPlainTextEdit;
     textEdit->setPlainText("Hello World!\nThis is my demo.");
     QFont font = textEdit->font();
     font.setPointSize();
     textEdit->setFont(font);
     //设置文本格式
     QVBoxLayout* Vey=new QVBoxLayout;
     Vey->addLayout(Hey);
     Vey->addLayout(Hsy);
     Vey->addWidget(textEdit);
     Vey->addLayout(Hty);
     //垂直风格的页面总布局
     setLayout(Vey);//设置为窗体的主布局
 }

主文件main：

 #include "qwdlgmanual.h"

 #include <QApplication>

 int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
     QWDlgManual w;
     w.show();
     return a.exec();
 }