QML 解决button中添加了MouseArea，点击事件就不响应了的问题

ToolBar {
        RowLayout {
            anchors.fill: parent
            ToolButton {
                id: toolbutton
                text: qsTr("‹")
                onClicked: console.log("<")
            }
            Label {
                text: "Title"
                elide: Label.ElideRight
                horizontalAlignment: Qt.AlignHCenter
                verticalAlignment: Qt.AlignVCenter
                Layout.fillWidth: true
            }
            ToolButton {
                text: qsTr("⋮")
                onClicked: console.log(":")
            }
            MouseArea {   //放布局外无效
                anchors.fill: parent   //充满整个布局，导致覆盖了按钮自身的点击事件，点击按钮无效
                hoverEnabled: true
                onEntered: {
                    console.log("enter")
                }
                onExited: {
                    console.log("exit")
                }
            }
        }
    }

修改后：

ToolBar {
        RowLayout {
            anchors.fill: parent
            ToolButton {
                id: toolbutton
                text: qsTr("‹")
                onClicked: console.log("<")
            }
            Label {
                text: "Title"
                elide: Label.ElideRight
                horizontalAlignment: Qt.AlignHCenter
                verticalAlignment: Qt.AlignVCenter
                Layout.fillWidth: true
            }
            ToolButton {
                text: qsTr("⋮")
                onClicked: console.log(":")
            }
            MouseArea {   //放布局外无效
                anchors.fill: toolbutton   //充满左边的工具按钮，成为了它的专属按钮事件
                hoverEnabled: true
                onEntered: {
                    console.log("enter")
                }
                onExited: {
                    console.log("exit")
                }
                onClicked: {
　　　　　　　　　　　　console.log("<")   //点击事件有效
　　　　　　　　　}
            }
        }

    }

其他：

ToolBar {
        RowLayout {
            anchors.fill: parent
            ToolButton {
                id: toolbutton
                text: qsTr("‹")
                onClicked:
                    console.log("<")
            }
            Label {
                text: "Title"
                elide: Label.ElideRight
                horizontalAlignment: Qt.AlignHCenter
                verticalAlignment: Qt.AlignVCenter
                Layout.fillWidth: true
            }
            ToolButton {
                id: toolbutton2
                text: qsTr("⋮")
                onClicked:
                    console.log(":")
            }
            MouseArea {   //放布局外无效
                anchors.fill: toolbutton   //事件无效
                hoverEnabled: true
                onEntered: {
                    console.log("enter toolbutton")
                }
                onExited: {
                    console.log("exit toolbutton")
                }
                onClicked:
                    console.log("< toolbutton")
            }
            MouseArea {   //放布局外无效
                anchors.fill: toolbutton2   //事件无效
                hoverEnabled: true
                onEntered: {
                    console.log("enter toolbutton2")
                }
                onExited: {
                    console.log("exit toolbutton2")
                }
                onClicked:
                    console.log("< toolbutton2")
            }
            MouseArea {   //放布局外无效
                anchors.fill: parent   //事件有效
                hoverEnabled: true
                onEntered: {
                    console.log("enter")
                }
                onExited: {
                    console.log("exit")
                }
                onClicked:
                    console.log("<")
            }
        }
    }

ToolBar {
        RowLayout {
            anchors.fill: parent
            ToolButton {
                id: toolbutton
                text: qsTr("‹")
                onClicked:
                    console.log("<")
            }
            Label {
                text: "Title"
                elide: Label.ElideRight
                horizontalAlignment: Qt.AlignHCenter
                verticalAlignment: Qt.AlignVCenter
                Layout.fillWidth: true
            }
            ToolButton {
                id: toolbutton2
                text: qsTr("⋮")
                onClicked:
                    console.log(":")
            }
            MouseArea {   //放布局外无效
                anchors.fill: toolbutton   //事件无效
                hoverEnabled: true
                onEntered: {
                    console.log("enter toolbutton")
                }
                onExited: {
                    console.log("exit toolbutton")
                }
                onClicked:
                    console.log("< toolbutton")
            }
            MouseArea {   //放布局外无效
                anchors.fill: parent   //事件有效
                hoverEnabled: true
                onEntered: {
                    console.log("enter")
                }
                onExited: {
                    console.log("exit")
                }
                onClicked:
                    console.log("<")
            }
            MouseArea {   //放布局外无效
                anchors.fill: toolbutton2   //事件有效
                hoverEnabled: true
                onEntered: {
                    console.log("enter toolbutton2")
                }
                onExited: {
                    console.log("exit toolbutton2")
                }
                onClicked:
                    console.log("< toolbutton2")
            }
        }
    }