QT中识别多个按钮

1.创建多个按钮：

    DO1Button = new QPushButton(tr("DO 1"));

    DO2Button = new QPushButton(tr("DO 2"));

    DO3Button = new QPushButton(tr("DO 3"));

    DO4Button = new QPushButton(tr("DO 4"));

    DO5Button = new QPushButton(tr("DO 5"));

    DO6Button = new QPushButton(tr("DO 6"));

    DO7Button = new QPushButton(tr("DO 7"));

    DO8Button = new QPushButton(tr("DO 8"));

2.添加对象名称：

    DO1Button->setObjectName("DO 1");

    DO2Button->setObjectName("DO 2");

    DO3Button->setObjectName("DO 3");

    DO4Button->setObjectName("DO 4");

    DO5Button->setObjectName("DO 5");

    DO6Button->setObjectName("DO 6");

    DO7Button->setObjectName("DO 7");

    DO8Button->setObjectName("DO 8");

3.连接槽函数

    connect(DO1Button, SIGNAL(clicked()), this, SLOT(channelValueSetDiModeButtonClick()));

    connect(DO2Button, SIGNAL(clicked()), this, SLOT(channelValueSetDiModeButtonClick()));

    connect(DO3Button, SIGNAL(clicked()), this, SLOT(channelValueSetDiModeButtonClick()));

    connect(DO4Button, SIGNAL(clicked()), this, SLOT(channelValueSetDiModeButtonClick()));

    connect(DO5Button, SIGNAL(clicked()), this, SLOT(channelValueSetDiModeButtonClick()));

    connect(DO6Button, SIGNAL(clicked()), this, SLOT(channelValueSetDiModeButtonClick()));

    connect(DO7Button, SIGNAL(clicked()), this, SLOT(channelValueSetDiModeButtonClick()));

    connect(DO8Button, SIGNAL(clicked()), this, SLOT(channelValueSetDiModeButtonClick()));

4.对应加入List

    DODispButtonList.append(DO1DispButton);
    DODispButtonList.append(DO2DispButton);
    DODispButtonList.append(DO3DispButton);
    DODispButtonList.append(DO4DispButton);
    DODispButtonList.append(DO5DispButton);
    DODispButtonList.append(DO6DispButton);
    DODispButtonList.append(DO7DispButton);
    DODispButtonList.append(DO8DispButton);
5.在槽函数里面对按钮进行区分设置风格（一个槽函数响应多个按钮，在同一个槽函数里面利用objectName再分开哪个按钮）：
    QPushButton* btn = qobject_cast<QPushButton*>(sender());    if("DO 1" == btn->objectName())    {        setChannelValue(0);    }
    DODispButtonList[i]->setStyleSheet("background-color:blue");