设置QPushbutton按钮背景、鼠标滑过状态、鼠标点击后状态用法

1.1当要设置QPushbutton按钮背景，字体颜色，鼠标滑过状态，鼠标单击后状态时，可以用QSS来设置，具体的代码如下：

    QPushButton *allSelect = new QPushButton;
    allSelect->setStyleSheet("QPushButton{border-image: url(:/res/appicon/wx.png) 0 0 0 0;border:none;color:rgb(255, 255, 255);}"
                            "QPushButton:hover{background-color: rgb(20, 62, 134);border:none;color:rgb(255, 255, 255);}"
                            "QPushButton:checked{background-color: rgb(20, 62, 134);border:none;color:rgb(255, 255, 255);}");

1.2另一种设置按钮图标显示。下面代码功能是在一个按钮内显示图标和文字，效果为左图标，右文字。当鼠标滑过时图标切换为另一个图标。当点击鼠标后又切换到另一个图标。具体代码如下：

    QPushButton *readyRecoveryBtn = new QPushButton("准备恢复");
    readyRecoveryBtn->setFixedSize(QSize(,));
    readyRecoveryBtn->setStyleSheet("QPushButton{background-image: url(:res/recoverydata/icon/main_icon_recovery.png);background-repeat: no-repeat;background-position:left;border:none;color:rgb(255, 255, 255);}"
                                "QPushButton:hover{background-image: url(:res/recoverydata/icon/main_icon_recovery_h.png);background-repeat: no-repeat;background-position:left;border:none;color:rgb(255, 255, 255);}"
                                "QPushButton:pressed{background-image: url(:res/recoverydata/icon/main_icon_recovery_p.png);background-repeat: no-repeat;background-position:left;border:none;color:rgb(255, 255, 255);}");

原文 ：https://blog.csdn.net/naibozhuan3744/article/details/80913651