Cmake: accessing qtvirtual keyboard module - qt

Question

Can anyone do a simple example of including qtvirtualkeyboard module into a cmake file? I want to access the classes but I cannot figure out how to include it.

Answer 1

Qt's virtual keyboard is just another module, it can be loaded with find_package. The minimal example of cmake file being:
cmake_minimum_required(VERSION 3.5.0 FATAL_ERROR)
PROJECT("MyKeyboard")
set(CMAKE_PREFIX_PATH $ENV{QTDIR})
find_package(Qt5 COMPONENTS Widgets VirtualKeyboard REQUIRED)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTORCC ON)
add_executable("MyKeyboard"
main.cpp
)
target_link_libraries("MyKeyboard" Qt5::Widgets Qt5::VirtualKeyboard)

Answer 2

This example should work. It was compiled using CMake 3.1.1 and Qt 5.11.1
The code is available in my GitHub account. The QML example is based on the example provided by Qt.
Main CMakeLists.txt
cmake_minimum_required(VERSION 3.1)
# 3rd party tools
find_package(Qt5 COMPONENTS Widgets Qml Quick REQUIRED)
# Directory with the source code
add_subdirectory(src)
CMakeLists.txt included in the subdirectory
include_directories(${Qt5Widgets_INCLUDE_DIRS} ${QtQml_INCLUDE_DIRS})
add_definitions(${Qt5Widgets_DEFINITIONS} ${QtQml_DEFINITIONS} ${${Qt5Quick_DEFINITIONS}})
qt5_add_resources(QT_RESOURCES qml.qrc)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${Qt5Widgets_EXECUTABLE_COMPILE_FLAGS}")
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_AUTOUIC ON)
set(PROJECT "virtualkeyboard-cmake-56202469")
project(${PROJECT})
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Werror -std=c++11 -fstrict-aliasing -pedantic-errors -pedantic -Wno-deprecated-declarations -Wno-unused-variable")
if(NOT DEFINED HEADERS)
file(GLOB HEADERS ${CMAKE_CURRENT_SOURCE_DIR}/*.h)
endif()
if(NOT DEFINED SOURCES)
file(GLOB SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/*.cpp)
endif()
source_group("Header Files" FILES ${HEADERS})
source_group("Source Files" FILES ${SOURCES})
add_executable(${PROJECT} ${HEADERS} ${SOURCES} ${QT_RESOURCES})
target_link_libraries(${PROJECT}
Qt5::Widgets
Qt5::Qml
Qt5::Quick
)
qml.qrc
<RCC>
<qresource prefix="/">
<file>main.qml</file>
</qresource>
</RCC>
main.cpp
#include <QQuickView>
#include <QGuiApplication>
#include <QQmlEngine>
int main(int argc, char** argv)
{
qputenv("QT_IM_MODULE", QByteArray("qtvirtualkeyboard"));
QGuiApplication app(argc, argv);
QQuickView view(QString("qrc:/main.qml"));
if (view.status() == QQuickView::Error)
return -1;
view.setResizeMode(QQuickView::SizeRootObjectToView);
view.show();
return app.exec();
}
main.qml
import QtQuick 2.10
import QtQuick.Controls 2.3
import QtQuick.VirtualKeyboard 2.1
Rectangle {
width: 1280
height: 720
color: "#F6F6F6"
Flickable {
id: flickable
anchors.fill: parent
contentWidth: content.width
contentHeight: content.height
interactive: contentHeight > height
flickableDirection: Flickable.VerticalFlick
property real scrollMarginVertical: 20
MouseArea {
id: content
width: flickable.width
height: textEditors.height + 24
onClicked: focus = true
Column {
id: textEditors
spacing: 15
x: 12
y: 12
width: parent.width - 26
Label {
color: "#565758"
text: "Tap fields to enter text"
anchors.horizontalCenter: parent.horizontalCenter
font.pixelSize: 22
}
TextField {
width: parent.width
placeholderText: "One line field"
onAccepted: passwordField.focus = true
}
TextField {
id: passwordField
width: parent.width
echoMode: TextInput.Password
placeholderText: "Password field"
inputMethodHints: Qt.ImhNoAutoUppercase | Qt.ImhPreferLowercase | Qt.ImhSensitiveData | Qt.ImhNoPredictiveText
onAccepted: upperCaseField.focus = true
}
}
}
}
}