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：

 1 #ifndef QWDLGMANUAL_H
 2 #define QWDLGMANUAL_H
 3 
 4 #include <QDialog>
 5 #include <QPushButton>
 6 #include <QRadioButton>
 7 #include <QCheckBox>
 8 #include <QPlainTextEdit>
 9 #include <QBoxLayout>
10 
11 class QWDlgManual : public QDialog
12 {
13     Q_OBJECT
14 
15 public:
16     QWDlgManual(QWidget *parent = nullptr);
17     ~QWDlgManual();
18 
19 private slots:
20     void on_setUnderline(bool checked);
21     void on_setBold(bool checked);
22     void on_setItalic(bool checked);
23     void ColorSet();
24 
25 private:
26     QRadioButton* rbtnred;
27     QRadioButton* rbtnblue;
28     QRadioButton* rbtnblack;
29     QCheckBox* ckboxBold;
30     QCheckBox* ckboxItalic;
31     QCheckBox* ckboxUnder;
32     QPushButton* btnClose;
33     QPushButton* btnOK;
34     QPlainTextEdit* textEdit;
35     void initialSignalSlots();
36     void initialUI();
37 };
38 #endif // QWDLGMANUAL_H

qwdlgmanual.cpp：

  1 #include "qwdlgmanual.h"
  2 
  3 QWDlgManual::QWDlgManual(QWidget *parent)
  4     : QDialog(parent)
  5 {
  6     initialUI();
  7     initialSignalSlots();
  8     setWindowTitle("Form");
  9 }
 10 
 11 QWDlgManual::~QWDlgManual()
 12 {
 13 }
 14 
 15 void QWDlgManual::on_setUnderline(bool checked)
 16 {
 17     QFont font=textEdit->font();
 18     font.setUnderline(checked);
 19     textEdit->setFont(font);
 20 }
 21 
 22 void QWDlgManual::on_setBold(bool checked)
 23 {
 24     QFont font=textEdit->font();
 25     font.setBold(checked);
 26     textEdit->setFont(font);
 27 }
 28 
 29 void QWDlgManual::on_setItalic(bool checked)
 30 {
 31     QFont font=textEdit->font();
 32     font.setItalic(checked);
 33     textEdit->setFont(font);
 34 }
 35 
 36 void QWDlgManual::ColorSet()
 37 {
 38     QPalette palte=textEdit->palette();
 39     if(rbtnred->isChecked())
 40         palte.setColor(QPalette::Text,Qt::red);
 41     else if(rbtnblue->isChecked())
 42         palte.setColor(QPalette::Text,Qt::blue);
 43     else if(rbtnblack->isChecked())
 44         palte.setColor(QPalette::Text,Qt::black);
 45     textEdit->setPalette(palte);
 46 }
 47 
 48 void QWDlgManual::initialSignalSlots()
 49 {
 50     connect(rbtnred,SIGNAL(clicked()),this,SLOT(ColorSet()));
 51     connect(rbtnblue,SIGNAL(clicked()),this,SLOT(ColorSet()));
 52     connect(rbtnblack,SIGNAL(clicked()),this,SLOT(ColorSet()));
 53     //radiobutton与槽函数的链接
 54     connect(ckboxBold,SIGNAL(clicked(bool)),this,SLOT(on_setBold(bool)));
 55     connect(ckboxUnder,SIGNAL(clicked(bool)),this,SLOT(on_setUnderline(bool)));
 56     connect(ckboxItalic,SIGNAL(clicked(bool)),this,SLOT(on_setItalic(bool)));
 57     //checkbutton与槽函数的链接
 58     connect(btnOK,SIGNAL(clicked()),this,SLOT(accept()));
 59     connect(btnClose,SIGNAL(clicked()),this,SLOT(close()));
 60     //pushbutton与槽函数的链接
 61 }
 62 
 63 void QWDlgManual::initialUI()
 64 {
 65     ckboxBold = new QCheckBox(tr("Bold"));
 66     ckboxItalic = new QCheckBox(tr("Itlic"));
 67     ckboxUnder = new QCheckBox(tr("Underline"));
 68     QHBoxLayout* Hey=new QHBoxLayout;
 69     Hey->addWidget(ckboxBold);
 70     Hey->addWidget(ckboxItalic);
 71     Hey->addWidget(ckboxUnder);
 72     //增加更改字体的CheckBox
 73     rbtnred = new QRadioButton(tr("Red"));
 74     rbtnblue = new QRadioButton(tr("Blue"));
 75     rbtnblack = new QRadioButton(tr("Black"));
 76     QHBoxLayout* Hsy=new QHBoxLayout;
 77     Hsy->addWidget(rbtnred);
 78     Hsy->addWidget(rbtnblue);
 79     Hsy->addWidget(rbtnblack);
 80     //增加更改颜色的RadioButton
 81     btnOK = new QPushButton(tr("确定"));
 82     btnClose = new QPushButton(tr("关闭"));
 83     QHBoxLayout* Hty=new QHBoxLayout;
 84     Hty->addStretch();
 85     Hty->addWidget(btnOK);
 86     Hty->addWidget(btnClose);
 87     //添加确认与退出按键
 88     textEdit = new QPlainTextEdit;
 89     textEdit->setPlainText("Hello World!
This is my demo.");
 90     QFont font = textEdit->font();
 91     font.setPointSize(20);
 92     textEdit->setFont(font);
 93     //设置文本格式
 94     QVBoxLayout* Vey=new QVBoxLayout;
 95     Vey->addLayout(Hey);
 96     Vey->addLayout(Hsy);
 97     Vey->addWidget(textEdit);
 98     Vey->addLayout(Hty);
 99     //垂直风格的页面总布局
100     setLayout(Vey);//设置为窗体的主布局
101 }

主文件main：

 1 #include "qwdlgmanual.h"
 2 
 3 #include <QApplication>
 4 
 5 int main(int argc, char *argv[])
 6 {
 7     QApplication a(argc, argv);
 8     QWDlgManual w;
 9     w.show();
10     return a.exec();
11 }