QQ：609162385
在使用qt自带的键盘中，总是弹出占半个屏幕，我们可以通过以下办法来控制其大小。

1,新建一个qml文件
内容如下：作用是用一个qml窗口来显示键盘

import QtQuick 2.6
import QtQuick.Window 2.2
import QtQuick.VirtualKeyboard 2.1
Item {
    visible: true
    width: 640
    height: 480
    id:appContainer
    MouseArea {
        anchors.rightMargin: 0
        anchors.bottomMargin: 0
        anchors.leftMargin: 0
        anchors.topMargin: 0
        anchors.fill: parent
        onClicked: {
            console.log(qsTr('Clicked on background. Text: "' + textEdit.text + '"'))
        }
    }

    TextEdit {
        y:0
        id: textEdit
        text: qsTr("Enter some text...")
        verticalAlignment: Text.AlignVCenter
        anchors.top: parent.top
        anchors.horizontalCenter: parent.horizontalCenter
        anchors.topMargin: 20
        Rectangle {
            anchors.fill: parent
            anchors.margins: -10
            color: "transparent"
            border.width: 1
        }
    }

    InputPanel {
        id: inputPanel
        z: 99
        y: 300
        anchors.left: parent.left
        anchors.right: parent.right
        states: State {
            name: "visible"
            when: inputPanel.active
            PropertyChanges {
                target: inputPanel
                y: appContainer.height - inputPanel.height
            }
        }
        transitions: Transition {
            from: ""
            to: "visible"
            reversible: true
            ParallelAnimation {
                NumberAnimation {
                    properties: "y"
                    duration: 250
                    easing.type: Easing.InOutQuad
                }
            }
        }
    }
}

2，然后我们在界面中添加一个quickWidget，来加载这个qml，这样就可以实现键盘大小的控制。