diff --git a/src/inputcontrol/inputconvertgame.cpp b/src/inputcontrol/inputconvertgame.cpp
index 29258d7..2275bcd 100644
--- a/src/inputcontrol/inputconvertgame.cpp
+++ b/src/inputcontrol/inputconvertgame.cpp
@@ -12,18 +12,26 @@ InputConvertGame::~InputConvertGame()
 
 void InputConvertGame::mouseEvent(const QMouseEvent *from, const QSize &frameSize, const QSize &showSize)
 {
+    updateSize(frameSize, showSize);
 }
 
 void InputConvertGame::wheelEvent(const QWheelEvent *from, const QSize &frameSize, const QSize &showSize)
 {
+    updateSize(frameSize, showSize);
 }
 
 void InputConvertGame::keyEvent(const QKeyEvent *from, const QSize& frameSize, const QSize& showSize)
 {
+    updateSize(frameSize, showSize);
     if (!from || from->isAutoRepeat()) {
         return;
     }
 
+    if (isSteerWheelKeys(from)) {
+        processSteerWheel(from);
+        return;
+    }
+
     AndroidMotioneventAction action;
     // pos
     QPointF pos;
@@ -79,17 +87,135 @@ void InputConvertGame::keyEvent(const QKeyEvent *from, const QSize& frameSize, c
     }
 
     return;
-/*
-    if (QEvent::KeyPress == from->type()) {
-        ControlEvent* controlEvent2 = new ControlEvent(ControlEvent::CET_MOUSE);
-        if (!controlEvent2) {
+}
+
+void InputConvertGame::updateSize(const QSize &frameSize, const QSize &showSize)
+{
+    m_frameSize = frameSize;
+    m_showSize = showSize;
+}
+
+void InputConvertGame::sendTouchDownEvent(int id, QPointF pos)
+{
+    sendTouchEvent(id, pos, AMOTION_EVENT_ACTION_DOWN);
+}
+
+void InputConvertGame::sendTouchMoveEvent(int id, QPointF pos)
+{
+    sendTouchEvent(id, pos, AMOTION_EVENT_ACTION_MOVE);
+}
+
+void InputConvertGame::sendTouchUpEvent(int id, QPointF pos)
+{
+    sendTouchEvent(id, pos, AMOTION_EVENT_ACTION_UP);
+}
+
+void InputConvertGame::sendTouchEvent(int id, QPointF pos, AndroidMotioneventAction action)
+{
+    if (0 > id || MULTI_TOUCH_MAX_NUM-1 < id) {
+        return;
+    }
+    ControlEvent* controlEvent = new ControlEvent(ControlEvent::CET_TOUCH);
+    if (!controlEvent) {
+        return;
+    }
+    controlEvent->setTouchEventData(id, action, QRect(calcAbsolutePos(pos).toPoint(), m_frameSize));
+    sendControlEvent(controlEvent);
+}
+
+QPointF InputConvertGame::calcAbsolutePos(QPointF relativePos)
+{
+    QPointF absolutePos;
+    absolutePos.setX(m_showSize.width() * relativePos.x());
+    absolutePos.setY(m_showSize.height() * relativePos.y());
+    // convert pos
+    absolutePos.setX(absolutePos.x() * m_frameSize.width() / m_showSize.width());
+    absolutePos.setY(absolutePos.y() * m_frameSize.height() / m_showSize.height());
+    return absolutePos;
+}
+
+int InputConvertGame::attachTouchID(int key)
+{
+    for (int i = 0; i < MULTI_TOUCH_MAX_NUM; i++) {
+        if (0 == multiTouchID[i]) {
+            multiTouchID[i] = key;
+            return i;
+        }
+    }
+    return -1;
+}
+
+void InputConvertGame::detachTouchID(int key)
+{
+    for (int i = 0; i < MULTI_TOUCH_MAX_NUM; i++) {
+        if (key == multiTouchID[i]) {
+            multiTouchID[i] = 0;
             return;
         }
-        pos.setY(pos.y() - 50);
-        action &= AMOTION_EVENT_ACTION_POINTER_INDEX_MASK;
-        action |= AMOTION_EVENT_ACTION_MOVE;
-        controlEvent2->setMouseEventData((AndroidMotioneventAction)action, AMOTION_EVENT_BUTTON_PRIMARY, QRect(pos.toPoint(), frameSize));
-        sendControlEvent(controlEvent2);
     }
-    */
+}
+
+int InputConvertGame::getTouchID(int key)
+{
+    for (int i = 0; i < MULTI_TOUCH_MAX_NUM; i++) {
+        if (key == multiTouchID[i]) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+bool InputConvertGame::isSteerWheelKeys(const QKeyEvent *from)
+{
+    for (int key : m_steerWheelKeys) {
+        if (key == from->key()) {
+            return true;
+        }
+    }
+    return false;
+}
+#include <QDebug>
+void InputConvertGame::processSteerWheel(const QKeyEvent *from)
+{    
+    QPointF movePos = m_steerWheelPos;
+    int moveKey = 0;
+    if (QEvent::KeyPress == from->type()) {
+        m_steerWheelKeysNum++;        
+        if (1 == m_steerWheelKeysNum) {
+            int id = attachTouchID(from->key());
+            if (-1 == id) {
+                return;
+            }
+            m_steerWheelFirstTouchKey = from->key();
+            sendTouchDownEvent(id, m_steerWheelPos);
+            moveKey = from->key();
+        } else if (2 == m_steerWheelKeysNum) {
+            moveKey = from->key();
+        }
+
+    } else if (QEvent::KeyRelease == from->type()){
+        m_steerWheelKeysNum--;
+        if (0 == m_steerWheelKeysNum) {
+            sendTouchUpEvent(getTouchID(m_steerWheelFirstTouchKey), m_steerWheelPos);
+            detachTouchID(from->key());
+            m_steerWheelFirstTouchKey = 0;
+            return;
+        } else if (1 == m_steerWheelKeysNum) {
+            moveKey = m_steerWheelFirstTouchKey;
+        }
+    }
+
+    if (moveKey == m_steerWheelKeys[SWD_UP]) {
+        movePos.setY(movePos.y() - m_steerWheelOffset);
+    } else if (moveKey == m_steerWheelKeys[SWD_RIGHT]) {
+        movePos.setX(movePos.x() + m_steerWheelOffset);
+    } else if (moveKey == m_steerWheelKeys[SWD_DOWN]) {
+        movePos.setY(movePos.y() + m_steerWheelOffset);
+    } else if (moveKey == m_steerWheelKeys[SWD_LEFT]) {
+        movePos.setX(movePos.x() - m_steerWheelOffset);
+    }
+    if (0 != moveKey) {
+        qDebug() << "move pos" << movePos;
+        sendTouchMoveEvent(getTouchID(m_steerWheelFirstTouchKey), movePos);
+    }
 }
diff --git a/src/inputcontrol/inputconvertgame.h b/src/inputcontrol/inputconvertgame.h
index fa79d86..8f98ef5 100644
--- a/src/inputcontrol/inputconvertgame.h
+++ b/src/inputcontrol/inputconvertgame.h
@@ -1,8 +1,10 @@
 #ifndef INPUTCONVERTGAME_H
 #define INPUTCONVERTGAME_H
 
+#include <QPointF>
 #include "inputconvertbase.h"
 
+#define MULTI_TOUCH_MAX_NUM 10
 class InputConvertGame : public InputConvertBase
 {
 public:
@@ -12,6 +14,44 @@ public:
     void mouseEvent(const QMouseEvent* from, const QSize& frameSize, const QSize& showSize);
     void wheelEvent(const QWheelEvent* from, const QSize& frameSize, const QSize& showSize);
     void keyEvent(const QKeyEvent* from, const QSize& frameSize, const QSize& showSize);
+
+protected:
+    void updateSize(const QSize& frameSize, const QSize& showSize);
+    void sendTouchDownEvent(int id, QPointF pos);
+    void sendTouchMoveEvent(int id, QPointF pos);
+    void sendTouchUpEvent(int id, QPointF pos);
+    void sendTouchEvent(int id, QPointF pos, AndroidMotioneventAction action);
+    QPointF calcAbsolutePos(QPointF relativePos);
+
+    // multi touch id
+    int attachTouchID(int key);
+    void detachTouchID(int key);
+    int getTouchID(int key);
+
+    // steer wheel
+    bool isSteerWheelKeys(const QKeyEvent* from);
+    void processSteerWheel(const QKeyEvent* from);
+
+private:
+    enum SteerWheelDirection {
+        SWD_UP = 0,
+        SWD_RIGHT,
+        SWD_DOWN,
+        SWD_LEFT,
+    };
+
+private:
+    QSize m_frameSize;
+    QSize m_showSize;
+
+    int multiTouchID[MULTI_TOUCH_MAX_NUM] = { 0 };
+
+    QPointF m_steerWheelPos = {0.16f, 0.75f};
+    float m_steerWheelOffset = 0.1f;
+    // order by SteerWheelDirection(up right down left)
+    int m_steerWheelKeys[4] = {Qt::Key_W, Qt::Key_D, Qt::Key_S, Qt::Key_A};
+    int m_steerWheelKeysNum = 0;
+    int m_steerWheelFirstTouchKey = 0;
 };
 
 #endif // INPUTCONVERTGAME_H
diff --git a/src/videoform.cpp b/src/videoform.cpp
index 1a31d7f..1efbae4 100644
--- a/src/videoform.cpp
+++ b/src/videoform.cpp
@@ -88,6 +88,7 @@ void VideoForm::updateShowSize(const QSize &newSize)
 
             // 窗口居中
             move(screenRect.center() - geometry().center());
+            qDebug() << screenRect.center() << geometry().center();
         }
 
         if (showSize != size()) {