QColorDialog和QMessageBox使用

1. QColorDialog

 

 

    QColor color = QColorDialog::getColor(Qt::white,this);

    //
    QString msg = QString("r:%1, g:%2, b%3").arg(QString::number(color.red()),
        QString::number(color.green()),QString::number(color.blue()));

    QMessageBox::information(this,"RGB",msg);

 

2. QMessageBox

 

    QMessageBox::information(NULL,"information","good boy");
    QMessageBox::critical(NULL,"critical","RI O");
    QMessageBox::warning(NULL,"warning","you are die");
    QMessageBox::about(NULL,"about","about me");
    QMessageBox::question(NULL,"question","why?");

 

 

    QMessageBox::StandardButton rb = .....

    if (rb == QMessageBox::Yes)

 

    生成对象刚:

    if (message.exec() == QMessageBox::Yes)