c++ - 在与应用程序相同的窗口中显示 Qt 虚拟键盘

Question

这是我的问题，我想将 qtvirtual 键盘用于触摸屏应用程序。当我调用它时，它会在另一个窗口中弹出。如何让键盘在同一个窗口中弹出？

如果我尝试使用 QQuick 视图和 QqmlApplicationEngine （后者甚至不加载键盘）。

Answer 1

通常它会自动检测到，但如果您在桌面上，它可能会选择桌面集成。

此页面有一个示例，说明如何配置应用程序的 .pro 文件以根据您正在构建的平台/为哪个平台选择不同的 QML 文件：

disable-desktop|android-embedded|!isEmpty(CROSS_COMPILE)|qnx {
    DEFINES += MAIN_QML=\\\"basic-b2qt.qml\\\"
} else {
    DEFINES += MAIN_QML=\\\"Basic.qml\\\"
}

该示例中的 basic-b2qt.qml可用于应用程序集成（即在同一窗口中显示键盘）：

import QtQuick 2.0
import QtQuick.Window 2.2
import QtQuick.VirtualKeyboard 2.2
import QtQuick.VirtualKeyboard.Settings 2.2
import "content"

Item {
    width: 1280
    height: 720

    Item {
        id: appContainer
        width: Screen.width < Screen.height ? parent.height : parent.width
        height: Screen.width < Screen.height ? parent.width : parent.height
        anchors.centerIn: parent
        rotation: Screen.width < Screen.height ? 90 : 0
        Basic {
            id: virtualKeyboard
            anchors.left: parent.left
            anchors.top: parent.top
            anchors.right: parent.right
            anchors.bottom: inputPanel.top
            handwritingInputPanelActive: handwritingInputPanel.active
        }

        /*  Handwriting input panel for full screen handwriting input.

            This component is an optional add-on for the InputPanel component, that
            is, its use does not affect the operation of the InputPanel component,
            but it also can not be used as a standalone component.

            The handwriting input panel is positioned to cover the entire area of
            application. The panel itself is transparent, but once it is active the
            user can draw handwriting on it.
        */
        HandwritingInputPanel {
            z: 79
            id: handwritingInputPanel
            anchors.fill: parent
            inputPanel: inputPanel
            Rectangle {
                z: -1
                anchors.fill: parent
                color: "black"
                opacity: 0.10
            }
        }

        /*  Container area for the handwriting mode button.

            Handwriting mode button can be moved freely within the container area.
            In this example, a single click changes the handwriting mode and a
            double-click changes the availability of the full screen handwriting input.
        */
        Item {
            z: 99
            visible: handwritingInputPanel.enabled && Qt.inputMethod.visible
            anchors { left: parent.left; top: parent.top; right: parent.right; bottom: inputPanel.top; }
            HandwritingModeButton {
                id: handwritingModeButton
                anchors.top: parent.top
                anchors.right: parent.right
                anchors.margins: 10
                floating: true
                flipable: true
                width: 76
                height: width
                state: handwritingInputPanel.state
                onClicked: handwritingInputPanel.active = !handwritingInputPanel.active
                onDoubleClicked: handwritingInputPanel.available = !handwritingInputPanel.available
            }
        }

        /*  Keyboard input panel.

            The keyboard is anchored to the bottom of the application.
        */
        InputPanel {
            id: inputPanel
            z: 89
            y: appContainer.height
            anchors.left: parent.left
            anchors.right: parent.right
            states: State {
                name: "visible"
                /*  The visibility of the InputPanel can be bound to the Qt.inputMethod.visible property,
                    but then the handwriting input panel and the keyboard input panel can be visible
                    at the same time. Here the visibility is bound to InputPanel.active property instead,
                    which allows the handwriting panel to control the visibility when necessary.
                */
                when: inputPanel.active
                PropertyChanges {
                    target: inputPanel
                    y: appContainer.height - inputPanel.height
                }
            }
            transitions: Transition {
                id: inputPanelTransition
                from: ""
                to: "visible"
                reversible: true
                enabled: !VirtualKeyboardSettings.fullScreenMode
                ParallelAnimation {
                    NumberAnimation {
                        properties: "y"
                        duration: 250
                        easing.type: Easing.InOutQuad
                    }
                }
            }
            Binding {
                target: InputContext
                property: "animating"
                value: inputPanelTransition.running
            }
            AutoScroller {}
        }

        Binding {
            target: VirtualKeyboardSettings
            property: "fullScreenMode"
            value: appContainer.height > 0 && (appContainer.width / appContainer.height) > (16.0 / 9.0)
        }
    }
}