diff --git a/app/scanner/HGImgThumb.cpp b/app/scanner/HGImgThumb.cpp
index ba2ce194..3fe5a983 100644
--- a/app/scanner/HGImgThumb.cpp
+++ b/app/scanner/HGImgThumb.cpp
@@ -4644,7 +4644,7 @@ void HGImgThumb::Show()
     repaint();
 }
 
-void HGImgThumb::ThreadFunc(HGThread thread, HGPointer param)
+void HGAPI HGImgThumb::ThreadFunc(HGThread thread, HGPointer param)
 {
     Q_UNUSED(thread);
 
diff --git a/app/scanner/HGImgThumb.h b/app/scanner/HGImgThumb.h
index f2d11188..071e921d 100644
--- a/app/scanner/HGImgThumb.h
+++ b/app/scanner/HGImgThumb.h
@@ -192,7 +192,7 @@ private:
     QRect getNullScrollPos();
 
     void Show();
-    static void ThreadFunc(HGThread thread, HGPointer param);
+    static void HGAPI ThreadFunc(HGThread thread, HGPointer param);
 
 private:
     HGLock m_lockFront;
diff --git a/app/scanner/dialog_exportimagefile.cpp b/app/scanner/dialog_exportimagefile.cpp
index a446422e..bef0a2b4 100644
--- a/app/scanner/dialog_exportimagefile.cpp
+++ b/app/scanner/dialog_exportimagefile.cpp
@@ -47,7 +47,7 @@ Dialog_ExportImageFile::~Dialog_ExportImageFile()
     delete ui;
 }
 
-void Dialog_ExportImageFile::ThreadFunc(HGThread thread, HGPointer param)
+void HGAPI Dialog_ExportImageFile::ThreadFunc(HGThread thread, HGPointer param)
 {
     (void)thread;
     Dialog_ExportImageFile *p = (Dialog_ExportImageFile *)param;
diff --git a/app/scanner/dialog_exportimagefile.h b/app/scanner/dialog_exportimagefile.h
index 8f68d20b..75b04ef3 100644
--- a/app/scanner/dialog_exportimagefile.h
+++ b/app/scanner/dialog_exportimagefile.h
@@ -19,7 +19,7 @@ public:
     ~Dialog_ExportImageFile();
 
 private:
-    static void ThreadFunc(HGThread thread, HGPointer param);
+    static void HGAPI ThreadFunc(HGThread thread, HGPointer param);
 
 signals:
     void updateProgress(int value);
diff --git a/app/scanner/dialog_multirotateimagefile.cpp b/app/scanner/dialog_multirotateimagefile.cpp
index 048949bd..a57d8afc 100644
--- a/app/scanner/dialog_multirotateimagefile.cpp
+++ b/app/scanner/dialog_multirotateimagefile.cpp
@@ -34,7 +34,7 @@ Dialog_MultiRotateImageFile::~Dialog_MultiRotateImageFile()
     delete ui;
 }
 
-void Dialog_MultiRotateImageFile::ThreadFunc(HGThread thread, HGPointer param)
+void HGAPI Dialog_MultiRotateImageFile::ThreadFunc(HGThread thread, HGPointer param)
 {
     (void)thread;
     Dialog_MultiRotateImageFile *p = (Dialog_MultiRotateImageFile *)param;
diff --git a/app/scanner/dialog_multirotateimagefile.h b/app/scanner/dialog_multirotateimagefile.h
index 0265a3e3..40c31d16 100644
--- a/app/scanner/dialog_multirotateimagefile.h
+++ b/app/scanner/dialog_multirotateimagefile.h
@@ -20,7 +20,7 @@ signals:
     void refreshImageFile(const QString &fileName);
 
 private:
-    static void ThreadFunc(HGThread thread, HGPointer param);
+    static void HGAPI ThreadFunc(HGThread thread, HGPointer param);
 
 signals:
     void updateProgress(int value);
diff --git a/app/scanner/dialog_updateprogress.cpp b/app/scanner/dialog_updateprogress.cpp
index 52ce6496..e4ad7efc 100644
--- a/app/scanner/dialog_updateprogress.cpp
+++ b/app/scanner/dialog_updateprogress.cpp
@@ -34,7 +34,7 @@ Dialog_updateProgress::~Dialog_updateProgress()
     delete ui;
 }
 
-HGInt Dialog_updateProgress::HttpDownloadThreadFunc(HGULonglong totalSize, HGULonglong nowSize, HGPointer param)
+HGInt HGAPI Dialog_updateProgress::HttpDownloadThreadFunc(HGULonglong totalSize, HGULonglong nowSize, HGPointer param)
 {
     Dialog_updateProgress *p = (Dialog_updateProgress *)param;
     if (p->m_stopThread)
@@ -50,7 +50,7 @@ HGInt Dialog_updateProgress::HttpDownloadThreadFunc(HGULonglong totalSize, HGULo
     return 0;
 }
 
-void Dialog_updateProgress::ThreadFunc(HGThread thread, HGPointer param)
+void HGAPI Dialog_updateProgress::ThreadFunc(HGThread thread, HGPointer param)
 {
     (void)thread;
     Dialog_updateProgress *p = (Dialog_updateProgress *)param;
diff --git a/app/scanner/dialog_updateprogress.h b/app/scanner/dialog_updateprogress.h
index 57c84138..688c908f 100644
--- a/app/scanner/dialog_updateprogress.h
+++ b/app/scanner/dialog_updateprogress.h
@@ -19,8 +19,8 @@ public:
                                    const QString &savePath, QWidget *parent = nullptr);
     ~Dialog_updateProgress();
 private:
-    static HGInt HttpDownloadThreadFunc(HGULonglong totalSize, HGULonglong nowSize, HGPointer param);
-    static void ThreadFunc(HGThread thread, HGPointer param);
+    static HGInt HGAPI HttpDownloadThreadFunc(HGULonglong totalSize, HGULonglong nowSize, HGPointer param);
+    static void HGAPI ThreadFunc(HGThread thread, HGPointer param);
 
 signals:
     void updateProgress(int value);
diff --git a/app/scanner/mainwindow.cpp b/app/scanner/mainwindow.cpp
index db3df631..0c73fbc9 100644
--- a/app/scanner/mainwindow.cpp
+++ b/app/scanner/mainwindow.cpp
@@ -2404,7 +2404,7 @@ int MainWindow::sane_ex_callback(SANE_Handle hdev, int code, void *data, unsigne
     return 0;
 }
 
-void MainWindow::CrashFunc(HGPointer crashAddr, HGPointer param)
+void HGAPI MainWindow::CrashFunc(HGPointer crashAddr, HGPointer param)
 {
     MainWindow *p = (MainWindow *)param;
 
diff --git a/app/scanner/mainwindow.h b/app/scanner/mainwindow.h
index 9729551c..8e37005a 100644
--- a/app/scanner/mainwindow.h
+++ b/app/scanner/mainwindow.h
@@ -222,7 +222,7 @@ protected:
 
 private:
     static int sane_ex_callback(SANE_Handle hdev, int code, void *data, unsigned int* len, void *param);
-    static void CrashFunc(HGPointer crashAddr, HGPointer param);
+    static void HGAPI CrashFunc(HGPointer crashAddr, HGPointer param);
 
     HGUInt getDpi();
     QString getCacheFileName(HGImage img);
diff --git a/app/upgrade/mainwindow.cpp b/app/upgrade/mainwindow.cpp
index 063e6883..df030fc1 100644
--- a/app/upgrade/mainwindow.cpp
+++ b/app/upgrade/mainwindow.cpp
@@ -83,7 +83,7 @@ bool MainWindow::Upgrade(const std::string& pkgPath)
     return ret;
 }
 
-void MainWindow::ThreadFunc(HGThread thread, HGPointer param)
+void HGAPI MainWindow::ThreadFunc(HGThread thread, HGPointer param)
 {
     (void)thread;
     MainWindow* p = (MainWindow*)param;
diff --git a/app/upgrade/mainwindow.h b/app/upgrade/mainwindow.h
index 7468d40b..c0d53d37 100644
--- a/app/upgrade/mainwindow.h
+++ b/app/upgrade/mainwindow.h
@@ -23,7 +23,7 @@ signals:
 
 private:
     static bool Upgrade(const std::string& pkgPath);
-    static void ThreadFunc(HGThread thread, HGPointer param);
+    static void HGAPI ThreadFunc(HGThread thread, HGPointer param);
 
 private:
     Ui::MainWindow *ui;