diff --git a/QQt.pro b/QQt.pro
index c1f20bdb..bb7cc8b8 100644
--- a/QQt.pro
+++ b/QQt.pro
@@ -24,7 +24,8 @@ SUBDIRS = src/qqt.pro
 #SUBDIRS += examples/qrcodeexample
 #SUBDIRS += examples/qqtnetworkexample
 #udp 嵌入式linux，Qt编译了udp后支持
-#SUBDIRS += examples/qqtudpexample
+#
+greaterThan(QT_MAJOR_VERSION , 4):SUBDIRS += examples/qqtudpexample
 #SUBDIRS += examples/qqtchartexample
 #
 #
@@ -48,7 +49,7 @@ SUBDIRS = src/qqt.pro
 #SUBDIRS += test/qqtdicttest2
 #SUBDIRS += test/consoletest
 #
-SUBDIRS += test/voicetest
+greaterThan(QT_MAJOR_VERSION , 4):SUBDIRS += test/voicetest
 
 #!contains(QKIT_PRIVATE, iOS|iOSSimulator){
 #    SUBDIRS += test/cmdwidget
diff --git a/src/frame/qqtwifidbwidget.cpp b/src/frame/qqtwifidbwidget.cpp
index 763e8e51..8c7fa286 100644
--- a/src/frame/qqtwifidbwidget.cpp
+++ b/src/frame/qqtwifidbwidget.cpp
@@ -1,21 +1,22 @@
-#include "qqtwifidbwidget.h"
+#include "qqtwifidbwidget.h"
 
-QQtWifiDBWidget::QQtWifiDBWidget(QWidget* parent) : QQtWidget(parent)
+QQtWifiDBWidget::QQtWifiDBWidget ( QWidget* parent ) : QQtWidget ( parent )
 {
 
 }
 
-void QQtWifiDBWidget::setDbPixMap(QQtWifiDBWidget::DB_STAT s, QString pixname)
+void QQtWifiDBWidget::setDbPixMap ( QQtWifiDBWidget::DB_STAT s, const QString& pixname )
 {
-    if (s < Db_S0 || s >= Db_SMax)
+    if ( s < Db_S0 || s >= Db_SMax )
         return;
 
     pic[s] = pixname;
 }
 
-void QQtWifiDBWidget::setDB(QQtWifiDBWidget::DB_STAT s)
+void QQtWifiDBWidget::setDB ( QQtWifiDBWidget::DB_STAT s )
 {
-    if (s < Db_S0 || s >= Db_SMax)
+    if ( s < Db_S0 || s >= Db_SMax )
         return;
-    setPixmap(pic[s]);
+
+    setPixmap ( pic[s] );
 }
diff --git a/src/frame/qqtwifidbwidget.h b/src/frame/qqtwifidbwidget.h
index 03e01021..dd23eaa7 100644
--- a/src/frame/qqtwifidbwidget.h
+++ b/src/frame/qqtwifidbwidget.h
@@ -1,4 +1,4 @@
-#ifndef QQTWIFIDBWIDGET_H
+#ifndef QQTWIFIDBWIDGET_H
 #define QQTWIFIDBWIDGET_H
 
 #include <qqtwidget.h>
@@ -26,7 +26,7 @@ public:
     virtual ~QQtWifiDBWidget() {}
 
     void setDB ( DB_STAT s );
-    void setDbPixMap ( DB_STAT s, QString pixname );
+    void setDbPixMap ( DB_STAT s, const QString& pixname );
 
 signals:
 
diff --git a/src/network/qqtsocketudpclient.cpp b/src/network/qqtsocketudpclient.cpp
index 2dbcb8a7..41e3cc80 100644
--- a/src/network/qqtsocketudpclient.cpp
+++ b/src/network/qqtsocketudpclient.cpp
@@ -31,10 +31,6 @@ void QQtSocketUdpClient::installProtocol ( QQtUdpProtocol* stack )
     m_protocol = stack;
     connect ( m_protocol, SIGNAL ( writeDatagram ( QByteArray, QHostAddress, quint16 ) ),
               this, SLOT ( slotWriteDatagram ( QByteArray, QHostAddress, quint16 ) ) );
-#if QT_VERSION > QT_VERSION_CHECK(5,0,0)
-    connect ( m_protocol, SIGNAL ( writeDatagram ( const QNetworkDatagram& ) ),
-              this, SLOT ( slotWriteDatagram ( const QNetworkDatagram& ) ) );
-#endif
 }
 
 void QQtSocketUdpClient::uninstallProtocol ( QQtUdpProtocol* stack )
@@ -46,10 +42,6 @@ void QQtSocketUdpClient::uninstallProtocol ( QQtUdpProtocol* stack )
 
     disconnect ( m_protocol, SIGNAL ( writeDatagram ( QByteArray, QHostAddress, quint16 ) ),
                  this, SLOT ( slotWriteDatagram ( QByteArray, QHostAddress, quint16 ) ) );
-#if QT_VERSION > QT_VERSION_CHECK(5,0,0)
-    disconnect ( m_protocol, SIGNAL ( writeDatagram ( const QNetworkDatagram& ) ),
-                 this, SLOT ( slotWriteDatagram ( const QNetworkDatagram& ) ) );
-#endif
     m_protocol = NULL;
 }
 
@@ -144,9 +136,14 @@ void QQtSocketUdpClient::updateProgress ( qint64 bytes )
     //pline() << bytes;
 }
 
+qint64 QQtSocketUdpClient::slotWriteDatagram ( const QByteArray& datagram, const QHostAddress& host, quint16 port )
+{
+    return writeDatagram ( datagram, host, port );
+}
+
 void QQtSocketUdpClient::readyReadData()
 {
-    /*为什么用while?*/ //Qt4 没有那么高级的一次性读取的接口
+    /*为什么用while?*/ //Qt4 没有那么高级的一次性读取的接口?有
     while ( hasPendingDatagrams() )
     {
         QByteArray bytes;
@@ -154,7 +151,24 @@ void QQtSocketUdpClient::readyReadData()
         QHostAddress host;
         quint16 port;
 
+#if QT_VERSION > QT_VERSION_CHECK(5,0,0)
+        /*能够一次收够一条报文？测试的能。*/
+        QNetworkDatagram datagram = receiveDatagram();
+        /*由于添加了兼容Qt4的代码，以上注释起来。*/
+
+        /*数据无意义 "" -1 在此设置*/
+        datagram.setDestination ( this->localAddress(), this->localPort() );
+        //pline() << "udp sender:" << datagram.senderAddress() << datagram.senderPort();
+        //pline() << "udp receiver:" << datagram.destinationAddress() << datagram.destinationPort();
+        m_protocol->translator ( datagram );
+
+        bytes = datagram.data();
+        host = datagram.senderAddress();
+        port = datagram.senderPort();
+        m_protocol->translator ( bytes, host, port );
+#else
         qint64 size = pendingDatagramSize();
+        //pline() << "udp new msg size:" << size;
         //这里的buf用完, 已经释放。
         char* data = new char[size + 1]();
         qint64 len = readDatagram ( data, size, &host, &port );
@@ -163,22 +177,8 @@ void QQtSocketUdpClient::readyReadData()
         delete[] data;
 
         m_protocol->translator ( bytes, host, port );
-
-#if QT_VERSION > QT_VERSION_CHECK(5,0,0)
-        /*能够一次收够一条报文？测试的能。*/
-        QNetworkDatagram datagram;
-        //datagrame = receiveDatagram();
-        /*由于添加了兼容Qt4的代码，以上注释起来。*/
-        datagram.setData ( bytes );
-        datagram.setSender ( host, port );
-
-        /*数据无意义 "" -1 在此设置*/
-        datagram.setDestination ( this->localAddress(), this->localPort() );
-        //pline() << "udp sender:" << datagram.senderAddress() << datagram.senderPort();
-        //pline() << "udp receiver:" << datagram.destinationAddress() << datagram.destinationPort();
-        //pline() << "udp new msg size:" << size;
-        m_protocol->translator ( datagram );
 #endif
+
     }
 }
 
diff --git a/src/network/qqtsocketudpclient.h b/src/network/qqtsocketudpclient.h
index 315d2db8..6f178889 100644
--- a/src/network/qqtsocketudpclient.h
+++ b/src/network/qqtsocketudpclient.h
@@ -42,15 +42,9 @@ private slots:
     void updateProgress ( qint64 bytes );
     //如果有一个同名的槽，参数不同，并且被用宏控制起来，Qt编译不过。
     //Qt的元对象系统，解析信号和槽函数，不支持宏。
+    //QtUdpSocket，writeDatagram不是个槽。
     qint64 slotWriteDatagram ( const QByteArray& datagram,
-                               const QHostAddress& host, quint16 port ) {
-        return writeDatagram ( datagram, host, port );
-    }
-#if QT_VERSION > QT_VERSION_CHECK(5,0,0)
-    qint64 slotWriteDatagram ( const QNetworkDatagram& datagram ) {
-        return writeDatagram ( datagram );
-    }
-#endif
+                               const QHostAddress& host, quint16 port );
 
 private:
     QQtUdpProtocol* m_protocol;
diff --git a/src/network/qqtudpprotocol.h b/src/network/qqtudpprotocol.h
index bd4d8da9..f0601682 100644
--- a/src/network/qqtudpprotocol.h
+++ b/src/network/qqtudpprotocol.h
@@ -21,16 +21,18 @@ public:
     }
     virtual ~QQtUdpProtocol() {}
 
-signals:
-    qint64 writeDatagram ( const QByteArray& datagram,
-                           const QHostAddress& host, quint16 port );
 #if QT_VERSION > QT_VERSION_CHECK(5,0,0)
     qint64 writeDatagram ( const QNetworkDatagram& datagram ) {
         //emit writeDatagram();
     }
 #endif
 
+signals:
+    qint64 writeDatagram ( const QByteArray& datagram,
+                           const QHostAddress& host, quint16 port );
+
 public slots:
+
 protected:
     /**
      * @brief 语义解析器
@@ -42,13 +44,17 @@ protected:
                                      const QHostAddress& host, quint16 port ) {
         return 0;
     }
+    /*
+     * 这两个dispatcher，任选其一重写。
+     */
 #if QT_VERSION > QT_VERSION_CHECK(5,0,0)
     inline virtual bool dispatcher ( const QNetworkDatagram& ) { return 0; }
 #endif
+
 public:
     /**
      * @brief 协议处理器
-     * @brief 这个处理器是给QQtSocketUdpSocket用的，不是给客户用的。
+     * @brief 这个处理器是给QQtSocketUdpSocket用的，不需要用户管理。
      * @param Qt通讯口readAll()读到的bytes
      * @return
      */
diff --git a/src/widgets/qqtwidget.cpp b/src/widgets/qqtwidget.cpp
index 8619c098..57add431 100644
--- a/src/widgets/qqtwidget.cpp
+++ b/src/widgets/qqtwidget.cpp
@@ -1,4 +1,4 @@
-#include "qqtwidget.h"
+#include "qqtwidget.h"
 #include <QStylePainter>
 #include "qqtcore.h"
 
diff --git a/src/widgets/qqtwidget.h b/src/widgets/qqtwidget.h
index fae6c28e..eece1ab5 100644
--- a/src/widgets/qqtwidget.h
+++ b/src/widgets/qqtwidget.h
@@ -1,4 +1,4 @@
-#ifndef QQTWIDGET_H
+#ifndef QQTWIDGET_H
 #define QQTWIDGET_H
 
 #include <qqt-local.h>