主窗口的代码如下： QGridLayout* layout = new QGridLayout; QWidget* centralWidget = new QWidget(this); centralWidget->setLayout(layout); setCentralWidget(centralWidget); // 添加应用图标按钮 DraggableButton *appButton1 = new DraggableButton(this); appButton1->setText("记事本”) appButton1->setIconSize(QSize(150, 150)); appButton1->setFixedSize(QSize(180, 180)); layout->addWidget(appButton1,0,0,1,1); DraggableButton* appButton2 = new DraggableButton(this); appButton1->setText(“电子”); appButton2->setIconSize(QSize(150, 150)); appButton2->setFixedSize(QSize(180, 180)); layout->addWidget(appButton2,0,1,1,1);

在你提供的主窗口代码中，有一些小错误。以下是修正后的代码：

QGridLayout* layout = new QGridLayout;
QWidget* centralWidget = new QWidget(this);
centralWidget->setLayout(layout);
setCentralWidget(centralWidget);

// 添加应用图标按钮
DraggableButton *appButton1 = new DraggableButton(this); 
appButton1->setText("记事本");
appButton1->setIconSize(QSize(150, 150));
appButton1->setFixedSize(QSize(180, 180));
layout->addWidget(appButton1, 0, 0, 1, 1);

DraggableButton* appButton2 = new DraggableButton(this);
appButton2->setText("电子");
appButton2->setIconSize(QSize(150, 150));
appButton2->setFixedSize(QSize(180, 180));
layout->addWidget(appButton2, 0, 1, 1, 1);

在这个修正后的代码中，我纠正了两个错误：
- 更正了 `appButton1` 的文字为 "记事本"。
- 更正了 `appButton2` 的文字为 "电子"。

现在你应该能够在主窗口中正确地创建两个可拖拽的按钮，并且按钮的文字将显示为 "记事本" 和 "电子"。