init study Qt

2025-08-24 11:10:27 +08:00
commit c3e374c375
9 changed files with 417 additions and 0 deletions
--- a/widget.cpp
+++ b/widget.cpp
@@ -0,0 +1,100 @@
+#include "widget.h"
+#include "ui_widget.h"
+#include "qperson.h"
+#include "QMetaProperty"
+
+Widget::Widget(QWidget *parent)
+    : QWidget(parent)
+    , ui(new Ui::Widget)
+{
+    ui->setupUi(this);
+
+    boy = new QPerson("南街");
+    boy->setProperty("score", 99);
+    boy->setProperty("age", 10);
+    boy->setProperty("sex", "Boy"); //动态属性
+    ui->spinBoy->setValue(10);
+    connect(boy, &QPerson::ageChanged, this, &Widget::on_ageChanged);
+
+    girl = new QPerson("小丽");
+    girl->setProperty("score", 66);
+    girl->setProperty("age", 6);
+    girl->setProperty("sex", "Girl"); //动态属性
+    ui->spinGirl->setValue(6);
+    connect(girl, &QPerson::ageChanged, this, &Widget::on_ageChanged);
+
+    ui->spinBoy->setProperty("isBoy", true); // ui动态属性
+    ui->spinGirl->setProperty("isBoy", false);
+
+    connect(ui->spinBoy, SIGNAL(valueChanged(int)),
+            this, SLOT(on_spin_valueChanged(int)));
+    connect(ui->spinGirl, SIGNAL(valueChanged(int)),
+            this, SLOT(on_spin_valueChanged(int)));
+}
+
+Widget::~Widget()
+{
+    delete ui;
+}
+
+void Widget::on_ageChanged(int val)
+{
+    Q_UNUSED(val)
+    QPerson *aPerson = qobject_cast<QPerson*>(sender());
+    QString hisName = aPerson->property("name").toString();
+    QString hisSex = aPerson->property("sex").toString();
+    int hisAge = aPerson->age();
+    hisAge = aPerson->property("age").toInt();
+    ui->textEdit->append(hisName + ", " + hisSex + QString::asprintf(", 年龄=%d", hisAge));
+}
+void Widget::on_spin_valueChanged(int arg1)
+{
+     Q_UNUSED(arg1)
+    auto spinBox = qobject_cast<QSpinBox*>(sender());
+    if(spinBox->property("isBoy").toBool())
+    {
+        boy->setAge(arg1);
+    }
+    else
+    {
+        girl->setAge(spinBox->value());
+    }
+}
+void Widget::on_btnClear_clicked()
+{
+    ui->textEdit->clear();
+}
+void Widget::on_btnBoyInc_clicked()
+{
+    int val = ui->spinBoy->value();
+    ui->spinBoy->setValue(++val);
+}
+void Widget::on_btnGirlInc_clicked()
+{
+    int val = ui->spinGirl->value();
+    ui->spinGirl->setValue(++val);
+}
+void Widget::on_btnClassInfo_clicked()
+{
+    const QMetaObject* meta=boy->metaObject();
+    ui->textEdit->clear();
+    ui->textEdit->append("==元对象信息==\n");
+    ui->textEdit->append(
+                QString("类名: %1\n").arg(meta->className()));
+    ui->textEdit->append("properties:\n");
+    for (int i= meta->propertyOffset(); i < meta->propertyCount(); ++i)
+    {
+        QMetaProperty prop = meta->property(i);
+        auto propName = prop.name();
+        auto propVal = boy->property(propName).toString();
+        ui->textEdit->append(
+                    QString("属性名=%1，属性值=%2").arg(propName).arg(propVal));
+    }
+    ui->textEdit->append("");
+    ui->textEdit->append("classInfo");
+    for (int i= meta->classInfoOffset(); i< meta->classInfoCount(); ++i)
+    {
+        QMetaClassInfo classInfo = meta->classInfo(i);
+        ui->textEdit->append(QString("Name=%1; Value=%2").arg(classInfo.name()).arg(classInfo.value()));
+    }
+}