Details
P3: Somewhat important Description
On Ubuntu 20.04(KDE neon), GNOME on xorg, latest build of dev branch(), including qtvirtualkeyboard and qtwayland.
cd ~/qt/qtbase-build cmake -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ -DQT_BUILD_EXAMPLES=OFF -DFEATURE_developer_build=ON -DWARNINGS_ARE_ERRORS=OFF -DQT_BUILD_TESTS=OFF -DQT_BUILD_EXAMPLES=OFF -DCMAKE_AUTOGEN_VERBOSE=OFF ~/qt/qtbase cmake --build . --parallel cd ~/qt/qtshadertools-build ~/qt/qtbase-build/bin/qt-cmake-private -DQT_BUILD_TESTS=OFF -DCMAKE_AUTOGEN_VERBOSE=OFF /home/liangqi/qt/qtshadertools cmake --build . --parallel // same for qtdeclarative, qtsvg, qtquickcontrols2, qtvirtualkeyboard and qtwayland cd ~/qt mkdir qtwayland-examples-build ~/qt/qtbase-build/bin/qmake ~/qt/qtwayland/examples/examples.pro make -j8
Use Qt Creator to load pure-qml (source: ~/qt/qtwayland/examples/wayland/pure-qml, build: ~/qt/qtwayland-examples-build/wayland/pure-qml), add QT_IM_MODULE=qtvirtualkeyboard in Run env, and -platform xcb in command line arguments.
Then run or debug pure-qml, got
13:44:57: Starting /home/liangqi/qt/qtwayland-examples-build/wayland/pure-qml/pure-qml -platform xcb... Could not create scene graph context for backend 'opengl' - check that plugins are installed correctly in /home/liangqi/qt/qtbase-build/plugins qrc:/qt-project.org/imports/QtWayland/Compositor/qmlfiles/WaylandCursorItem.qml:49:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax instead: function onFoo(<arguments>) { ... } qrc:/qml/Keyboard.qml:54:1: Type InputPanel unavailable qrc:/QtQuick/VirtualKeyboard/content/InputPanel.qml:132:5: Type Keyboard unavailable qrc:/QtQuick/VirtualKeyboard/content/components/Keyboard.qml:38:1: module "QtQuick.VirtualKeyboard.Plugins" is not installed qt.waylandcompositor.hardwareintegration: Failed to initialize EGL display. Could not get EglDisplay for window.
Running the same app in GNOME Terminal, it works fine, no warnings about can't load qtvkb plugin.