diff --git a/ClientCore/ClientCore.cpp b/ClientCore/ClientCore.cpp
index 58249be..d9d1aa7 100644
--- a/ClientCore/ClientCore.cpp
+++ b/ClientCore/ClientCore.cpp
@@ -4,10 +4,6 @@
 
 ClientCore::ClientCore(QObject* parent) : QObject(parent)
 {
-    qRegisterMetaType<QSharedPointer<FrameBuffer>>("QSharedPointer<FrameBuffer>");
-    qRegisterMetaType<InfoClientVec>("InfoClientVec");
-    qRegisterMetaType<DirFileInfoVec>("DirFileInfoVec");
-
     socket_ = new QTcpSocket(this);
     connect(socket_, &QTcpSocket::readyRead, this, &ClientCore::onReadyRead);
     connect(socket_, &QTcpSocket::disconnected, this, &ClientCore::onDisconnected);
diff --git a/Gui/Control/ConnectControl.cpp b/Gui/Control/ConnectControl.cpp
index 36a06b2..6223c48 100644
--- a/Gui/Control/ConnectControl.cpp
+++ b/Gui/Control/ConnectControl.cpp
@@ -95,6 +95,12 @@ void Connecter::setState(ConnectState cs)
     }
 }
 
+void Connecter::Disconnect()
+{
+    sockWorker_->quit();
+    qWarning() << QString(tr("Disconnected..."));
+}
+
 void Connecter::RefreshClient()
 {
     InfoMsg info;
@@ -138,6 +144,7 @@ void Connecter::InitControl()
     ui->listView->setContextMenuPolicy(Qt::CustomContextMenu);
 
     connect(ui->listView, &QListView::customContextMenuRequested, this, &Connecter::ShowContextMenu);
+    connect(ui->btnDisconnect, &QPushButton::clicked, this, &Connecter::Disconnect);
 
     menu_ = new QMenu(this);
     QAction* acUseThis = menu_->addAction(tr("UseThis"));
diff --git a/Gui/Control/ConnectControl.h b/Gui/Control/ConnectControl.h
index ae0f84f..13b92f5 100644
--- a/Gui/Control/ConnectControl.h
+++ b/Gui/Control/ConnectControl.h
@@ -1,4 +1,4 @@
-#ifndef CONNECTCONTROL_H
+#ifndef CONNECTCONTROL_H
 #define CONNECTCONTROL_H
 
 #include <ClientCore.h>
@@ -38,6 +38,7 @@ private:
     void Connect();
     void setState(ConnectState cs);
     void RefreshClient();
+    void Disconnect();
     void ShowContextMenu(const QPoint& pos);
     std::string getCurClient();
 
diff --git a/Gui/Form/Transform.cpp b/Gui/Form/Transform.cpp
index 24c7b38..0a269ef 100644
--- a/Gui/Form/Transform.cpp
+++ b/Gui/Form/Transform.cpp
@@ -16,6 +16,8 @@ TransForm::TransForm(QWidget* parent) : QDialog(parent), ui(new Ui::TransForm)
 
 TransForm::~TransForm()
 {
+    exis_ = true;
+    QThread::msleep(10);
     delete ui;
 }
 
@@ -27,6 +29,7 @@ void TransForm::SetClientCore(ClientCore* clientCore)
 
 void TransForm::SetTasks(const QVector<TransTask>& tasks)
 {
+    exis_ = true;
     tasks_ = tasks;
 }
 
@@ -37,6 +40,9 @@ void TransForm::startTask()
         if (task.isUpload) {
             fileTrans_->ReqSendFile(task);
             while (true) {
+                if (exis_) {
+                    return;
+                }
                 auto progress = fileTrans_->GetSendProgress();
                 if (progress < 0) {
                     emit sigFailed();
@@ -52,6 +58,9 @@ void TransForm::startTask()
         } else {
             fileTrans_->ReqDownFile(task);
             while (true) {
+                if (exis_) {
+                    return;
+                }
                 auto progress = fileTrans_->GetDownProgress();
                 if (progress < 0) {
                     emit sigFailed();
@@ -90,8 +99,7 @@ void TransForm::handleUI(const TransTask& task)
         ui->edTo->setText(task.remoteId);
         ui->pedFrom->setPlainText(task.localPath);
         ui->pedTo->setPlainText(task.remotePath);
-    }
-    else {
+    } else {
         ui->edFrom->setText(task.localId);
         ui->edTo->setText(task.remoteId);
         ui->pedFrom->setPlainText(task.remotePath);
diff --git a/Gui/Form/Transform.h b/Gui/Form/Transform.h
index 6ca130f..375b403 100644
--- a/Gui/Form/Transform.h
+++ b/Gui/Form/Transform.h
@@ -41,6 +41,7 @@ protected:
     void showEvent(QShowEvent* event) override;
 
 private:
+    bool exis_{ false };
     TranFromTh* workTh_{};
     QVector<TransTask> tasks_;
     FileTrans* fileTrans_{};
diff --git a/Gui/frelayGUI.cpp b/Gui/frelayGUI.cpp
index dde5bbb..cfd6e13 100644
--- a/Gui/frelayGUI.cpp
+++ b/Gui/frelayGUI.cpp
@@ -8,7 +8,6 @@
 #include "Control/LogControl.h"
 
 static LogPrint* logPrint = nullptr;
-static QMutex logMut;
 
 frelayGUI::frelayGUI(QWidget* parent) : QMainWindow(parent), ui(new Ui::frelayGUI)
 {
@@ -28,9 +27,7 @@ frelayGUI::frelayGUI(QWidget* parent) : QMainWindow(parent), ui(new Ui::frelayGU
 
 frelayGUI::~frelayGUI()
 {
-    QMutexLocker locker(&logMut);
     delete ui;
-    logPrint = nullptr;
 }
 
 void frelayGUI::InitControl()
@@ -93,9 +90,7 @@ void frelayGUI::ControlMsgHander(QtMsgType type, const QMessageLogContext& conte
 {
     Q_UNUSED(context);
 
-    QMutexLocker locker(&logMut);
-
-    if (!logPrint) {
+    if (!qApp || !qobject_cast<frelayGUI*>(qApp->activeWindow())) {
         return;
     }
 
diff --git a/Gui/main.cpp b/Gui/main.cpp
index 9f3966b..62c0e82 100644
--- a/Gui/main.cpp
+++ b/Gui/main.cpp
@@ -8,6 +8,9 @@ int main(int argc, char* argv[])
     QApplication a(argc, argv);
 
     qInstallMessageHandler(frelayGUI::ControlMsgHander);
+    qRegisterMetaType<QSharedPointer<FrameBuffer>>("QSharedPointer<FrameBuffer>");
+    qRegisterMetaType<InfoClientVec>("InfoClientVec");
+    qRegisterMetaType<DirFileInfoVec>("DirFileInfoVec");
 
 #ifdef _WIN32
     QFont font("Microsoft YaHei", 9);