自定义图标下拉列表框的效果如下所示:

自定义三态按钮的效果如下所示:

 

 

 其中自定义图标下拉列表框代码如下所示:

import QtQuick.Controls 2.14
import QtQuick 2.12
import QtGraphicalEffects 1.14
ComboBox {
      id: control
      property var normalIcon: null
      property var hoverIcon: null
      property int popupWidth: 100
      property int popupLeftMagin: - 20
      displayText: ""
      implicitHeight: 10
      implicitWidth: 10
      font.pixelSize: 13
      font.family: "Microsoft Yahei"

      model: ["First",