diff --git a/app/twaintest/HGUIGlobal.cpp b/app/twaintest/HGUIGlobal.cpp
new file mode 100644
index 00000000..fd3dbbf1
--- /dev/null
+++ b/app/twaintest/HGUIGlobal.cpp
@@ -0,0 +1,20 @@
+#include "HGUIGlobal.h"
+#include "base/HGDef.h"
+#include "base/HGInc.h"
+#include "base/HGUtility.h"
+
+QString getStdFileName(const QString &fileName)
+{
+    char result[512] = {0};
+    HGBase_StandardiseFileName(fileName.toStdString().c_str(), result, 512);
+    return result;
+}
+
+std::string getStdString(const QString &str)
+{
+#ifdef HG_CMP_MSC
+    return str.toLocal8Bit().data();
+#else
+    return str.toStdString();
+#endif
+}
diff --git a/app/twaintest/HGUIGlobal.h b/app/twaintest/HGUIGlobal.h
new file mode 100644
index 00000000..d1da4d16
--- /dev/null
+++ b/app/twaintest/HGUIGlobal.h
@@ -0,0 +1,10 @@
+#ifndef __HGUIGLOBAL_H__
+#define __HGUIGLOBAL_H__
+
+#include <QString>
+
+QString getStdFileName(const QString &fileName);
+
+std::string getStdString(const QString &str);
+
+#endif /* __HGUIGLOBAL_H__ */
diff --git a/app/twaintest/main.cpp b/app/twaintest/main.cpp
new file mode 100644
index 00000000..fd3e5334
--- /dev/null
+++ b/app/twaintest/main.cpp
@@ -0,0 +1,11 @@
+#include "mainwindow.h"
+
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    MainWindow w;
+    w.show();
+    return a.exec();
+}
diff --git a/app/twaintest/mainwindow.cpp b/app/twaintest/mainwindow.cpp
new file mode 100644
index 00000000..0d504eef
--- /dev/null
+++ b/app/twaintest/mainwindow.cpp
@@ -0,0 +1,188 @@
+#include "mainwindow.h"
+#include "ui_mainwindow.h"
+
+#include <QMessageBox>
+#include <QDir>
+#include "base/HGUtility.h"
+#include "imgfmt/HGImgFmt.h"
+#include "HGUIGlobal.h"
+#include "HGString.h"
+
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
+    , ui(new Ui::MainWindow)
+    , m_twainDSM(nullptr)
+    , m_twainDS(nullptr)
+    , m_cacheUuid("")
+{
+    ui->setupUi(this);
+
+    HGChar cacheUuid[256] = { 0 };
+    HGBase_GetUuid(cacheUuid, 256);
+    m_cacheUuid = cacheUuid;
+
+    QStringList capTypes = { "TWTY_INT8", "TWTY_UINT8", "TWTY_INT16", "TWTY_UINT16", "TWTY_INT32", "TWTY_UINT32", "TWTY_BOOL","TWTY_FIX32",
+                             "TWTY_STR32", "TWTY_STR64", "TWTY_STR128", "TWTY_STR255" };
+
+    ui->comboBox_capType->addItems(capTypes);
+    ui->comboBox_capType->setCurrentIndex(0);
+    ui->comboBox_capType->setEditable(true);
+    ui->label_deviceStatus->setText(tr("No device connected"));
+
+    HGTwain_CreateDSM((HWND)this->winId(), &m_twainDSM);
+
+    connect(this, SIGNAL(newImage(void*)), this, SLOT(on_newImage(void*)), Qt::DirectConnection);
+    connect(this, SIGNAL(clearRes()), this, SLOT(on_clearRes()), Qt::QueuedConnection);
+}
+
+MainWindow::~MainWindow()
+{
+    QString cachePath = getCachePath() + m_cacheUuid + "/";
+    QDir dir = QDir(cachePath);
+    if (dir.exists())
+        dir.removeRecursively();
+
+    if (m_twainDSM != nullptr)
+    {
+        HGTwain_DestroyDSM(m_twainDSM);
+        m_twainDSM = nullptr;
+    }
+
+    if (m_twainDS != nullptr)
+    {
+        HGTwain_CloseDS(m_twainDS);
+        HGTwain_DestroyDS(m_twainDS);
+        m_twainDS = nullptr;
+    }
+
+    delete ui;
+}
+
+void MainWindow::on_act_selectDevice_triggered()
+{
+    ui->label_deviceStatus->setText(tr("No device connected"));
+
+    if (m_twainDS != nullptr)
+    {
+        HGTwain_CloseDS(m_twainDS);
+        HGTwain_DestroyDS(m_twainDS);
+        m_twainDS = nullptr;
+    }
+
+    HGResult ret = HGTwain_CreateSelectedDSEx(m_twainDSM, &m_twainDS);
+    if (nullptr != m_twainDS)
+    {
+        HGResult ret = HGTwain_OpenDS(m_twainDS);
+        if (ret == HGBASE_ERR_OK)
+        {
+            HGTwain_LoginDS(m_twainDS, "user", "huagoscan");
+            ui->label_deviceStatus->setText(tr("Device %1 is open").arg(getDeviceName()));
+        }
+    }
+    else
+    {
+        if (HGTWAIN_ERR_CANCELUI != ret)
+        {
+            QMessageBox::information(this, tr("Prompt"), tr("Device source not found!"));
+        }
+    }
+}
+
+void MainWindow::on_pushButton_SetCap_clicked()
+{
+    QString capCode = ui->lineEdit_setCap->text();
+    bool ok = false;
+    HGUShort cap = capCode.toInt(&ok, 16);
+
+    HGCapValue value;
+    QString capType = ui->comboBox_capType->currentText();
+    if (capType == "TWTY_BOOL")
+    {
+        value.type = HGCAPVALUE_TYPE_BOOL;
+        value.valueBool = ui->lineEdit_setCapContent->text().toInt();
+    }
+
+    HGResult ret = HGTwain_SetCapbility(m_twainDS, cap, &value, ui->checkBox_resetCap->isChecked());
+    if (ret == HGBASE_ERR_OK)
+    {
+        QMessageBox::information(this, tr("Prompt"), tr("Set successfully"));
+    }
+    else
+    {
+        QMessageBox::information(this, tr("Prompt"), tr("Set failed"));
+    }
+}
+
+void MainWindow::on_pushButton_scan_clicked()
+{
+    HGResult ret = HGTwain_EnableDS(m_twainDS, HGFALSE, (HWND)this->winId(), DSEventFunc, this, DSImageFunc, this);
+}
+
+void MainWindow::on_newImage(void *image)
+{
+    HGImage img = nullptr;
+    HGBase_CloneImage((HGImage)image, 0, 0, &img);
+    QString scanFileName = getCacheFileName((HGImage)image);
+    HGImgFmtSaveInfo info;
+    info.jpegQuality = 100;
+    info.tiffCompression = HGIMGFMT_TIFFCOMP_LZW;
+    info.tiffJpegQuality = 0;
+    HGResult ret = HGImgFmt_SaveImage((HGImage)image, 0, &info, getStdString(scanFileName).c_str());
+}
+
+void MainWindow::on_clearRes()
+{
+    HGTwain_DisableDS(m_twainDS);
+}
+
+void MainWindow::DSEventFunc(HGTwainDS ds, HGUInt event, HGPointer param)
+{
+    MainWindow* p = (MainWindow*)param;
+    if (HGTWAIN_EVENT_TYPE_SCANFINISHED == event || HGTWAIN_EVENT_TYPE_CLOSEDSREQ == event)
+    {
+        emit p->clearRes();
+    }
+}
+
+HGUInt MainWindow::DSImageFunc(HGTwainDS ds, HGImage image, HGUInt type, HGPointer param)
+{
+    MainWindow* p = (MainWindow*)param;
+    emit p->newImage(image);
+    return HGBASE_ERR_OK;
+}
+
+QString MainWindow::getDeviceName()
+{
+    HGChar devName[256] = {0};
+    HGTwain_GetDSDeviceName(m_twainDS, devName, 256);
+    return QString(devName);
+}
+
+QString MainWindow::getCachePath()
+{
+    HGChar cachePath[512];
+    HGBase_GetDocumentsPath(cachePath, 512);
+    HGChar procName[512];
+    HGBase_GetProcessName(procName, 512);
+    strcat(cachePath, procName);
+    strcat(cachePath, "/Cache/");
+
+    return getStdFileName(StdStringToUtf8(cachePath).c_str());
+}
+
+QString MainWindow::getCacheFileName(HGImage img)
+{
+    assert(nullptr != img);
+
+    HGImageInfo imgInfo;
+    HGBase_GetImageInfo(img, &imgInfo);
+
+    QString cachePath = getCachePath() + m_cacheUuid + "/";
+    HGBase_CreateDir(getStdString(cachePath).c_str());
+
+    char uuid[256] = {0};
+    HGBase_GetUuid(uuid, 256);
+    QString suffix = (HGBASE_IMGTYPE_BINARY == imgInfo.type) ? ".bmp" : ".jpg";
+    QString fileName = getStdFileName(cachePath + uuid + suffix);
+    return fileName;
+}
diff --git a/app/twaintest/mainwindow.h b/app/twaintest/mainwindow.h
new file mode 100644
index 00000000..de8eda19
--- /dev/null
+++ b/app/twaintest/mainwindow.h
@@ -0,0 +1,50 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+#include "base/HGDef.h"
+#include "twain_user/HGTwain.h"
+
+QT_BEGIN_NAMESPACE
+namespace Ui { class MainWindow; }
+QT_END_NAMESPACE
+
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    MainWindow(QWidget *parent = nullptr);
+    ~MainWindow();
+
+private slots:
+    void on_act_selectDevice_triggered();
+
+    void on_pushButton_SetCap_clicked();
+
+    void on_pushButton_scan_clicked();
+
+signals:
+    void newImage(void *image);
+    void clearRes();
+
+private slots:
+    void on_newImage(void *image);
+    void on_clearRes();
+
+private:
+    static void HGAPI DSEventFunc(HGTwainDS ds, HGUInt event, HGPointer param);
+    static HGUInt HGAPI DSImageFunc(HGTwainDS ds, HGImage image, HGUInt type, HGPointer param);
+
+    QString getDeviceName();
+    QString getCachePath();
+    QString getCacheFileName(HGImage img);
+
+private:
+    Ui::MainWindow *ui;
+    HGTwainDSM m_twainDSM;
+    HGTwainDS m_twainDS;
+
+    QString m_cacheUuid;
+};
+#endif // MAINWINDOW_H
diff --git a/app/twaintest/mainwindow.ui b/app/twaintest/mainwindow.ui
new file mode 100644
index 00000000..8f21ed2f
--- /dev/null
+++ b/app/twaintest/mainwindow.ui
@@ -0,0 +1,211 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>MainWindow</class>
+ <widget class="QMainWindow" name="MainWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>800</width>
+    <height>600</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>MainWindow</string>
+  </property>
+  <widget class="QWidget" name="centralwidget">
+   <widget class="QLabel" name="label_setCap">
+    <property name="geometry">
+     <rect>
+      <x>30</x>
+      <y>80</y>
+      <width>91</width>
+      <height>16</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>Set Capbility:</string>
+    </property>
+   </widget>
+   <widget class="QLineEdit" name="lineEdit_setCap">
+    <property name="geometry">
+     <rect>
+      <x>130</x>
+      <y>70</y>
+      <width>161</width>
+      <height>31</height>
+     </rect>
+    </property>
+   </widget>
+   <widget class="QPushButton" name="pushButton_scan">
+    <property name="geometry">
+     <rect>
+      <x>310</x>
+      <y>450</y>
+      <width>101</width>
+      <height>41</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>Scan</string>
+    </property>
+   </widget>
+   <widget class="QPushButton" name="pushButton_SetCap">
+    <property name="geometry">
+     <rect>
+      <x>240</x>
+      <y>200</y>
+      <width>111</width>
+      <height>41</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>Set Cap</string>
+    </property>
+   </widget>
+   <widget class="QLabel" name="label_deviceStatus">
+    <property name="geometry">
+     <rect>
+      <x>30</x>
+      <y>30</y>
+      <width>331</width>
+      <height>16</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>Device Status:</string>
+    </property>
+   </widget>
+   <widget class="QComboBox" name="comboBox_capType">
+    <property name="geometry">
+     <rect>
+      <x>130</x>
+      <y>130</y>
+      <width>161</width>
+      <height>31</height>
+     </rect>
+    </property>
+   </widget>
+   <widget class="QLabel" name="label_capType">
+    <property name="geometry">
+     <rect>
+      <x>20</x>
+      <y>130</y>
+      <width>101</width>
+      <height>16</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>Capbility Type:</string>
+    </property>
+   </widget>
+   <widget class="QCheckBox" name="checkBox_resetCap">
+    <property name="geometry">
+     <rect>
+      <x>370</x>
+      <y>210</y>
+      <width>121</width>
+      <height>16</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>Reset Capbility</string>
+    </property>
+   </widget>
+   <widget class="QLineEdit" name="lineEdit_setCapContent">
+    <property name="geometry">
+     <rect>
+      <x>410</x>
+      <y>70</y>
+      <width>231</width>
+      <height>31</height>
+     </rect>
+    </property>
+   </widget>
+   <widget class="QLabel" name="label_setCapContent">
+    <property name="geometry">
+     <rect>
+      <x>330</x>
+      <y>80</y>
+      <width>71</width>
+      <height>16</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>Content:</string>
+    </property>
+   </widget>
+   <widget class="QLabel" name="label">
+    <property name="geometry">
+     <rect>
+      <x>20</x>
+      <y>320</y>
+      <width>91</width>
+      <height>16</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>Get Capbility:</string>
+    </property>
+   </widget>
+   <widget class="QLineEdit" name="lineEdit_getCap">
+    <property name="geometry">
+     <rect>
+      <x>130</x>
+      <y>310</y>
+      <width>161</width>
+      <height>31</height>
+     </rect>
+    </property>
+   </widget>
+   <widget class="QLabel" name="label_setCapContent_2">
+    <property name="geometry">
+     <rect>
+      <x>330</x>
+      <y>320</y>
+      <width>71</width>
+      <height>16</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>Content:</string>
+    </property>
+   </widget>
+   <widget class="QLineEdit" name="lineEdit_GetCapContent">
+    <property name="geometry">
+     <rect>
+      <x>410</x>
+      <y>310</y>
+      <width>231</width>
+      <height>31</height>
+     </rect>
+    </property>
+   </widget>
+  </widget>
+  <widget class="QMenuBar" name="menubar">
+   <property name="geometry">
+    <rect>
+     <x>0</x>
+     <y>0</y>
+     <width>800</width>
+     <height>22</height>
+    </rect>
+   </property>
+   <widget class="QMenu" name="menuact_scan">
+    <property name="title">
+     <string>act_scan</string>
+    </property>
+    <addaction name="act_selectDevice"/>
+   </widget>
+   <addaction name="menuact_scan"/>
+  </widget>
+  <widget class="QStatusBar" name="statusbar"/>
+  <action name="act_selectDevice">
+   <property name="text">
+    <string>act_selectDevice</string>
+   </property>
+  </action>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>
diff --git a/build2/qt/HGSolutionWin.pro b/build2/qt/HGSolutionWin.pro
index fa2e38cd..766dd0d7 100644
--- a/build2/qt/HGSolutionWin.pro
+++ b/build2/qt/HGSolutionWin.pro
@@ -6,6 +6,7 @@ SUBDIRS += \
     HGImgProc \
     HGTwainUI \
     HGTwainUser \
+    HGTwainTest \
     HGVersion \
     HGScannerLib \
     HGWebService \
@@ -27,6 +28,9 @@ HGTwainUser.depends = \
     HGBase \
     HGTwainUI
 
+HGTwainTest.depends = \
+    HGTwainUser
+
 HGVersion.depends = \
     HGBase
 	
diff --git a/build2/qt/HGTwainTest/HGTwainTest.pro b/build2/qt/HGTwainTest/HGTwainTest.pro
new file mode 100644
index 00000000..28f7eae9
--- /dev/null
+++ b/build2/qt/HGTwainTest/HGTwainTest.pro
@@ -0,0 +1,108 @@
+QT       += core gui
+
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+
+TEMPLATE = app
+DEFINES += UNTITLED_LIBRARY
+
+CONFIG += c++11
+
+# The following define makes your compiler emit warnings if you use
+# any Qt feature that has been marked deprecated (the exact warnings
+# depend on your compiler). Please consult the documentation of the
+# deprecated API in order to know how to port your code away from it.
+DEFINES += QT_DEPRECATED_WARNINGS
+DEFINES += QT_NO_VERSION_TAGGING
+
+# You can also make your code fail to compile if it uses deprecated APIs.
+# In order to do so, uncomment the following line.
+# You can also select to disable deprecated APIs only up to a certain version of Qt.
+#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
+
+include($$PWD/../HGOEM.pri)
+
+CONFIG(debug, debug|release) {
+    MY_CONFIGURE = Debug
+}
+CONFIG(release, debug|release) {
+    MY_CONFIGURE = Release
+}
+
+win32 {
+
+    MY_OS = windows
+    TARGET = $${OEM_PREFIX}TwainTestApp
+
+    contains(QT_ARCH, i386) {
+        MY_ARCH = x86
+    }
+    contains(QT_ARCH, x86_64) {
+        MY_ARCH = x64
+    }
+
+    CONFIG(release, debug|release) {
+        QMAKE_LFLAGS_RELEASE += /MAP
+        QMAKE_CFLAGS_RELEASE += /Zi
+        QMAKE_LFLAGS_RELEASE += /debug /opt:ref
+    }
+
+    LIBS += -lgdi32 -lgdiplus -ldbghelp -luser32 -ladvapi32
+    LIBS += -L$$PWD/../../build/$${MY_OS}/$${OEM_NAME}/$${MY_ARCH}/$${MY_CONFIGURE} -l$${OEM_PREFIX}Base  -l$${OEM_PREFIX}ImgFmt -l$${OEM_PREFIX}TwainUser
+
+    LIBS += -L$$PWD/../../../../release/win/$${MY_ARCH}/OEM/$${OEM_NAME}
+}
+
+INCLUDEPATH += $$PWD/../../../modules
+INCLUDEPATH += $$PWD/../../../utility
+
+DESTDIR = $$PWD/../../build/$${MY_OS}/$${OEM_NAME}/$${MY_ARCH}/$${MY_CONFIGURE}
+UI_DIR = $$PWD/../../temp/$${MY_OS}/$${OEM_NAME}/$${MY_ARCH}/$${MY_CONFIGURE}/$${TARGET}
+MOC_DIR = $$PWD/../../temp/$${MY_OS}/$${OEM_NAME}/$${MY_ARCH}/$${MY_CONFIGURE}/$${TARGET}
+OBJECTS_DIR = $$PWD/../../temp/$${MY_OS}/$${OEM_NAME}/$${MY_ARCH}/$${MY_CONFIGURE}/$${TARGET}
+RCC_DIR = $$PWD/../../temp/$${MY_OS}/$${OEM_NAME}/$${MY_ARCH}/$${MY_CONFIGURE}/$${TARGET}
+
+message(MY_OS: $$MY_OS)
+message(MY_ARCH: $$MY_ARCH)
+message(OEM_PREFIX: $$OEM_PREFIX)
+message(OEM_PREFIX2: $$OEM_PREFIX2)
+message(OEM_NAME: $$OEM_NAME)
+message(MY_CONFIGURE: $$MY_CONFIGURE)
+message(TARGET: $$TARGET)
+message(DESTDIR: $$DESTDIR)
+message(UI_DIR: $$UI_DIR)
+message(MOC_DIR: $$MOC_DIR)
+message(OBJECTS_DIR: $$OBJECTS_DIR)
+message(RCC_DIR: $$RCC_DIR)
+
+win32 {
+
+    CONFIG(release, debug|release) {
+        DESTEXE_PATH = $${PWD}/../../../../release/win/$${MY_ARCH}/$${MY_CONFIGURE}/
+        DESTEXE_PATH = $$replace(DESTEXE_PATH, /, \\)
+        message(DESTEXE_PATH: $$DESTEXE_PATH)
+
+        SRCEXE_FILE = $${DESTDIR}/$${TARGET}.exe
+        SRCEXE_FILE = $$replace(SRCEXE_FILE, /, \\)
+        message(SRCEXE_FILE: $$SRCEXE_FILE)
+        SRCPDB_FILE = $${DESTDIR}/$${TARGET}.pdb
+        SRCPDB_FILE = $$replace(SRCPDB_FILE, /, \\)
+        message(SRCPDB_FILE: $$SRCPDB_FILE)
+
+        QMAKE_POST_LINK += xcopy /y $$SRCEXE_FILE $$DESTEXE_PATH && xcopy /y $$SRCPDB_FILE $$DESTEXE_PATH
+    }
+}
+
+SOURCES +=   \
+    ../../../app/twaintest/main.cpp \
+    ../../../app/twaintest/mainwindow.cpp \
+    ../../../app/twaintest/HGUIGlobal.cpp \
+    ../../../utility/HGString.cpp
+
+
+HEADERS +=   \
+    ../../../app/twaintest/mainwindow.h \
+    ../../../app/twaintest/HGUIGlobal.h \
+    ../../../utility/HGString.h
+
+FORMS +=   \
+    ../../../app/twaintest/mainwindow.ui