其他

homework-day1/main.cpp

@@ -12,25 +12,26 @@
 int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
-    //    Widget7 w;
-    //    w.show();
-    Widget7 judge1;
-    Widget7 judge2;
-    Widget7 judge3;
+//    Widget7 w;
+//    w.show();
 
-    Widget8 w8;
+        Widget7 judge1;
+        Widget7 judge2;
+        Widget7 judge3;
 
-    judge1.show();
-    judge2.show();
-    judge3.show();
+        Widget8 w8;
 
-    // 建立信号槽连接
-    w8.connect(&judge1,&Widget7::studentSelected,&w8,&Widget8::receviceStudentSelection);
-    w8.connect(&judge2,&Widget7::studentSelected,&w8,&Widget8::receviceStudentSelection);
-    w8.connect(&judge2,&Widget7::studentSelected,&w8,&Widget8::receviceStudentSelection);
+        judge1.show();
+        judge2.show();
+        judge3.show();
+
+        // 建立信号槽连接
+        w8.connect(&judge1,&Widget7::studentSelected,&w8,&Widget8::receviceStudentSelection);
+        w8.connect(&judge2,&Widget7::studentSelected,&w8,&Widget8::receviceStudentSelection);
+        w8.connect(&judge2,&Widget7::studentSelected,&w8,&Widget8::receviceStudentSelection);
 
 
-//    w8.show();
+//        w8.show();
 
     return a.exec();
 }

homework-day1/widget5.cpp

@@ -21,6 +21,4 @@ Widget5::Widget5(QWidget *parent) : QWidget(parent)
                 this->setWindowTitle("Winget6消失了");
                 w6->close();
             });
-
-
 }

homework-day1/widget5.h

@@ -11,6 +11,7 @@ class Widget5 : public QWidget
     Q_OBJECT
 public:
     explicit Widget5(QWidget *parent = nullptr);
+    ~Widget5(){ delete w6;}
 
 private:
     Widget6 *w6; // Widget6 类对象的指针成员

homework-day1/widget7.cpp

@@ -24,37 +24,42 @@ Widget7::Widget7(QWidget *parent) : QWidget(parent)
     btn_restart = new QPushButton("重新再来",this);
     btn_restart->move(150,70);
 
-    connect(this,&Widget7::my_signal,this,&Widget7::my_handler);
-
+    //    connect(this,&Widget7::my_signal,this,&Widget7::my_handler);
+    connect(this,SIGNAL(my_signal(const QString &)),this,SLOT(my_handler(const QString &)));
 
     connect(btn1,&QPushButton::clicked,[&]{
         QString str = btn1->text();
         emit this->my_signal(str);
         emit this->studentSelected(str);
+        btn1->setEnabled(false);
     });
 
     connect(btn2,&QPushButton::clicked,[&]{
         QString str = btn2->text();
         emit this->my_signal(str);
         emit this->studentSelected(str);
+        btn2->setEnabled(false);
     });
 
     connect(btn3,&QPushButton::clicked,[&]{
         QString str = btn3->text();
         emit this->my_signal(str);
         emit this->studentSelected(str);
+        btn3->setEnabled(false);
     });
 
     connect(btn4,&QPushButton::clicked,[&]{
         QString str = btn4->text();
         emit this->my_signal(str);
         emit this->studentSelected(str);
+        btn4->setEnabled(false);
     });
 
     connect(btn5,&QPushButton::clicked,[&]{
         QString str = btn5->text();
         emit this->my_signal(str);
         emit this->studentSelected(str);
+        btn5->setEnabled(false);
     });
 
     // 打印学生
@@ -64,16 +69,24 @@ Widget7::Widget7(QWidget *parent) : QWidget(parent)
                     qDebug()<<*it;
                     it++;
                 }
+//                for(int i=0;i<vct->size();i++){
+//                    qDebug()<<vct->at(i);
+//                }
             });
 
     connect(btn_restart,&QPushButton::clicked,[&]()->void{
                 vct->clear(); // 清空容器
+                btn1->setEnabled(true); // 还原按钮可用性
+                btn2->setEnabled(true);
+                btn3->setEnabled(true);
+                btn4->setEnabled(true);
+                btn5->setEnabled(true);
             });
 }
 
 void Widget7::my_handler(const QString &str)
 {
-
     //    qDebug()<<str;
-    vct->append(str); // 向 QVector 中添加学生
+    if(vct->count(str) == 0) // 当本字符串尚未加入 vct 时，将其加入 vct
+        vct->append(str); // 向 QVector 中添加学生
 }

homework-day1/widget7.h

@@ -10,10 +10,8 @@ class Widget7 : public QWidget
     Q_OBJECT
 public:
     explicit Widget7(QWidget *parent = nullptr);
-    ~Widget7()
-    {
-        delete vct;
-    }
+    ~Widget7() { delete vct; }
+
 private:
     QVector<QString> *vct;
     QPushButton *btn1,*btn2,*btn3,*btn4,*btn5;