--- /dev/null
+#include "multikbd.h"
+#include <QApplication>
+
+#include <QDebug>
+
+#include <X11/Xlib.h>
+#include <X11/extensions/XInput2.h>
+#include <X11/Xutil.h>
+
+MultiKBD *window;
+
+class QMyApplication : public QApplication
+{
+public:
+ QMyApplication(int argc, char **argv)
+ : QApplication(argc, argv) {}
+
+ virtual bool x11EventFilter ( XEvent * event );
+};
+
+bool QMyApplication::x11EventFilter ( XEvent * event )
+{
+ if (!window) return false;
+ return window->handleX11Event(event);
+}
+
+int main(int argc, char *argv[])
+{
+ QMyApplication a(argc, argv);
+ window = new MultiKBD();
+ window->setAttribute(Qt::WA_DeleteOnClose);
+ window->show();
+
+ return a.exec();
+}
--- /dev/null
+#include "multikbd.h"
+#include "ui_multikbd.h"
+
+#include <QX11Info>
+#include <QDebug>
+
+#include <X11/Xlib.h>
+#include <X11/extensions/XInput2.h>
+#include <X11/Xutil.h>
+
+MultiKBD::MultiKBD(QWidget *parent) :
+ QWidget(parent),
+ ui(new Ui::MultiKBD),
+ xiInited(false)
+{
+ ui->setupUi(this);
+}
+
+MultiKBD::~MultiKBD()
+{
+ delete ui;
+}
+
+void MultiKBD::showEvent ( QShowEvent * )
+{
+ if (xiInited) return;
+
+ Display *dpy = x11Info().display();
+
+ /* XInput Extension available? */
+ int eventID, errorID;
+ if (!XQueryExtension(dpy, "XInputExtension", &xiOpcode, &eventID, &errorID)) {
+ qCritical() << "X Input extension not available";
+ }
+
+ /* Which version of XI2? We support 2.0 */
+ int major = 2, minor = 0;
+ if (XIQueryVersion(dpy, &major, &minor) == BadRequest) {
+ qCritical() << "XI2 not available. Server supports" << major << "." <<
+ minor;
+ }
+
+ qDebug() << "System is sane";
+
+
+ // Now let's listen to keypress events
+ XIEventMask eventmask;
+ unsigned char mask [1] = { 0 }; // will change
+ eventmask.deviceid = XIAllMasterDevices;
+ eventmask.mask_len = sizeof (mask); // in bytes, for whatever reason...
+ eventmask.mask = mask;
+ XISetMask(mask, XI_KeyPress);
+ XISelectEvents (dpy, winId(), &eventmask, 1);
+
+ xiInited = true;
+
+ /*activateWindow();
+ raise();
+ setFocus(Qt::OtherFocusReason);*/
+}
+
+void MultiKBD::handleKeyPress(int device, const char *string)
+{
+ qDebug() << "Device" << device << "String" << string;
+}
+
+bool MultiKBD::handleX11Event(XEvent *event)
+{
+ if (!xiInited) return false;
+ Display *dpy = x11Info().display();
+
+ if (event->xcookie.type == GenericEvent && event->xcookie.extension == xiOpcode
+ && event->xcookie.evtype == XI_KeyPress && XGetEventData(dpy, &event->xcookie)) {
+
+ XIDeviceEvent *d_ev = (XIDeviceEvent*) event->xcookie.data;
+ KeyCode keycode = d_ev->detail;
+ int kbdid = d_ev->deviceid;
+
+ if (!(d_ev->flags & XIKeyRepeat)) {
+ int keysyms_per_keycode;
+ KeySym keysym = XGetKeyboardMapping (dpy, keycode, 1, &keysyms_per_keycode)[0];
+ handleKeyPress(kbdid, XKeysymToString(keysym));
+ }
+
+ XFreeEventData(dpy, &event->xcookie);
+
+ return true;
+ }
+
+ return false;
+}
--- /dev/null
+#ifndef MULTIKBD_H
+#define MULTIKBD_H
+
+#include <QWidget>
+
+namespace Ui {
+class MultiKBD;
+}
+
+class MultiKBD : public QWidget
+{
+ Q_OBJECT
+
+public:
+ explicit MultiKBD(QWidget *parent = 0);
+ ~MultiKBD();
+
+ bool handleX11Event(XEvent *event);
+
+protected:
+ virtual void showEvent (QShowEvent *);
+
+private:
+ void handleKeyPress(int device, const char *string);
+
+private:
+ Ui::MultiKBD *ui;
+ bool xiInited;
+ int xiOpcode;
+};
+
+#endif // MULTIKBD_H
--- /dev/null
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>MultiKBD</class>
+ <widget class="QWidget" name="MultiKBD">
+ <property name="geometry">
+ <rect>
+ <x>0</x>
+ <y>0</y>
+ <width>400</width>
+ <height>300</height>
+ </rect>
+ </property>
+ <property name="windowTitle">
+ <string>MultiKBD</string>
+ </property>
+ <layout class="QVBoxLayout" name="verticalLayout">
+ <item>
+ <widget class="QRadioButton" name="radioButton">
+ <property name="text">
+ <string>RadioButton1</string>
+ </property>
+ </widget>
+ </item>
+ <item>
+ <widget class="QRadioButton" name="radioButton_2">
+ <property name="text">
+ <string>RadioButton2</string>
+ </property>
+ </widget>
+ </item>
+ <item>
+ <spacer name="verticalSpacer">
+ <property name="orientation">
+ <enum>Qt::Vertical</enum>
+ </property>
+ <property name="sizeHint" stdset="0">
+ <size>
+ <width>20</width>
+ <height>211</height>
+ </size>
+ </property>
+ </spacer>
+ </item>
+ <item>
+ <widget class="QPushButton" name="pushButton">
+ <property name="text">
+ <string>Close</string>
+ </property>
+ </widget>
+ </item>
+ </layout>
+ </widget>
+ <layoutdefault spacing="6" margin="11"/>
+ <resources/>
+ <connections>
+ <connection>
+ <sender>pushButton</sender>
+ <signal>clicked()</signal>
+ <receiver>MultiKBD</receiver>
+ <slot>close()</slot>
+ <hints>
+ <hint type="sourcelabel">
+ <x>199</x>
+ <y>283</y>
+ </hint>
+ <hint type="destinationlabel">
+ <x>199</x>
+ <y>149</y>
+ </hint>
+ </hints>
+ </connection>
+ </connections>
+</ui>
--- /dev/null
+#-------------------------------------------------
+#
+# Project created by QtCreator 2013-07-10T20:33:44
+#
+#-------------------------------------------------
+
+QT += core gui
+
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+
+TARGET = multixkbd
+TEMPLATE = app
+
+
+SOURCES += main.cpp\
+ multikbd.cpp
+
+HEADERS += multikbd.h
+
+FORMS += multikbd.ui
+
+LIBS += -lX11 -lXi