在QML样本中,保证金来自何处?

时间:2016-10-06 14:46:30

标签: qml qtquick2 qtquickcontrols2

我已经查看了大量有关QML中内容边距的问题,但所有答案都指向缺少spacing: 0属性。我已经完成了所有这些,但仍然得到了我无法消除的奇怪空间。任何人都可以解释为什么这个QML代码:

import QtQuick 2.7
import QtQuick.Controls 2.0
import QtQuick.Layouts 1.0

ApplicationWindow {
    visible: true
    width: 640
    height: 480
    title: qsTr("Test")

    RowLayout {
        spacing: 0
        anchors.margins: 0, 0, 0, 0
        anchors.fill: parent;

        Pane {
            anchors.margins: 0, 0, 0, 0
            id: menuPane
            anchors.top: parent.top;
            anchors.bottom: parent.bottom;
            width: 200

            ColumnLayout {
                spacing: 0
                anchors.fill: parent
                anchors.margins: 0, 0, 0, 0

                Rectangle {
                    id: testRect
                    Layout.fillWidth: true
                    anchors.top: parent.top
                    anchors.left: parent.left
                    anchors.right: parent.right
                    height: 20
                    color: "green"
                }
            }
        }

        Pane {
            anchors.margins: 0, 0, 0, 0
            anchors.left: menuPane.right
            anchors.right: parent.right
            anchors.top: parent.top
            anchors.bottom: parent.bottom

            Rectangle {
                anchors.margins: 0, 0, 0, 0
                anchors.fill: parent
                color: "black"
            }
        }
    }
}

是这样呈现的?为什么矩形之间有边距? QML window screenshot

1 个答案:

答案 0 :(得分:5)

这个答案很简短:

为您的窗格将属性padding设置为0,并且不会留下任何边距。
你也可以单独设置所有填充(leftPadding ...)这些属性继承自Control

在您的示例中看起来像这样:

import QtQuick 2.7
import QtQuick.Controls 2.0
import QtQuick.Layouts 1.0

ApplicationWindow {
    visible: true
    width: 640
    height: 480
    title: qsTr("Test")

    RowLayout {
        spacing: 0
        anchors.margins: 0
        anchors.fill: parent;

        Pane {
            anchors.margins: 0
            id: menuPane
            anchors.top: parent.top;
            anchors.bottom: parent.bottom;
            width: 200
            padding: 0


            ColumnLayout {
                spacing: 0
                anchors.fill: parent
                anchors.margins: 0

                Rectangle {
                    id: testRect
                    Layout.fillWidth: true
                    anchors.top: parent.top
                    anchors.left: parent.left
                    anchors.right: parent.right
                    height: 20
                    color: "green"
                }
            }

            Component.onCompleted: console.log(bottomPadding, leftPadding)
        }

        Pane {
            anchors.margins: 0
            anchors.left: menuPane.right
            anchors.right: parent.right
            anchors.top: parent.top
            anchors.bottom: parent.bottom
            padding: 0

            Rectangle {
                anchors.margins: 0
                anchors.fill: parent
                color: "black"
            }
        }
    }
}