init study Qt

widget.h

@@ -0,0 +1,34 @@
+#ifndef WIDGET_H
+#define WIDGET_H
+
+#include <QWidget>
+
+class QPerson;
+
+QT_BEGIN_NAMESPACE
+namespace Ui { class Widget; }
+QT_END_NAMESPACE
+
+class Widget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit Widget(QWidget *parent = nullptr);
+    ~Widget();
+
+private:
+    Ui::Widget *ui;
+    QPerson * boy;
+    QPerson *girl;
+
+private slots:
+    void on_ageChanged(int val);
+    void on_spin_valueChanged(int arg1);
+
+    void on_btnClear_clicked();
+    void on_btnBoyInc_clicked();
+    void on_btnGirlInc_clicked();
+    void on_btnClassInfo_clicked();
+};
+#endif // WIDGET_H