QMessageBox簡單使用

###首先要調用

#include <QMessageBox>

###然后

            QMessageBox msgBox;
            msgBox.setWindowTitle("錯誤");
            msgBox.setText("除數不能為零");
            msgBox.exec();
    

###或者簡單點

QMessageBox::warning(this,"錯誤","除數不能為零");

###常用的彈出框類型

1. Question For asking a question during normal operations.
2. Information For reporting information about normal operations.
3. Warning For reporting non-critical errors.
4. Critical For reporting critical errors.