diff --git a/src/Gui/CMakeLists.txt b/src/Gui/CMakeLists.txt
index 5a6ea67949..30086a2adb 100644
--- a/src/Gui/CMakeLists.txt
+++ b/src/Gui/CMakeLists.txt
@@ -1,7 +1,7 @@
 #add_subdirectory(Icons)
 
 if(WIN32)
-add_definitions(-DFCGui -DQIIS_MAKEDLL -DOVR_OS_WIN32 -DQUARTER_INTERNAL -DQUARTER_MAKE_DLL -DCOIN_DLL)
+add_definitions(-DFCGui -DQIIS_MAKEDLL -DQSINT_MAKEDLL -DOVR_OS_WIN32 -DQUARTER_INTERNAL -DQUARTER_MAKE_DLL -DCOIN_DLL)
 endif(WIN32)
 
 IF(CMAKE_BUILD_TYPE)
diff --git a/src/Gui/QSint/actionpanel/actionbox.h b/src/Gui/QSint/actionpanel/actionbox.h
index ab0f52cc0a..342716710c 100644
--- a/src/Gui/QSint/actionpanel/actionbox.h
+++ b/src/Gui/QSint/actionpanel/actionbox.h
@@ -159,7 +159,7 @@ namespace QSint
     \endcode
 
 */
-class ActionBox : public QFrame
+class QSINT_EXPORT ActionBox : public QFrame
 {
     Q_OBJECT
 
diff --git a/src/Gui/QSint/actionpanel/actiongroup.h b/src/Gui/QSint/actionpanel/actiongroup.h
index b977e785ef..36602fe3df 100644
--- a/src/Gui/QSint/actionpanel/actiongroup.h
+++ b/src/Gui/QSint/actionpanel/actiongroup.h
@@ -11,6 +11,7 @@
 #include <QTimer>
 #include <QWidget>
 #include <QBoxLayout>
+#include "qsint_global.h"
 
 
 namespace QSint
@@ -31,7 +32,7 @@ class ActionPanelScheme;
     It can contain arbitrary widgets as well.
 */
 
-class ActionGroup : public QWidget
+class QSINT_EXPORT ActionGroup : public QWidget
 {
     Q_OBJECT
 
diff --git a/src/Gui/QSint/actionpanel/actionlabel.h b/src/Gui/QSint/actionpanel/actionlabel.h
index 0badb3ec04..cd08ee6859 100644
--- a/src/Gui/QSint/actionpanel/actionlabel.h
+++ b/src/Gui/QSint/actionpanel/actionlabel.h
@@ -9,6 +9,7 @@
 #define ACTIONLABEL_H
 
 #include <QToolButton>
+#include "qsint_global.h"
 
 
 namespace QSint
@@ -64,7 +65,7 @@ namespace QSint
 
     \endcode
 */
-class ActionLabel : public QToolButton
+class QSINT_EXPORT ActionLabel : public QToolButton
 {
     Q_OBJECT
 
diff --git a/src/Gui/QSint/actionpanel/actionpanel.h b/src/Gui/QSint/actionpanel/actionpanel.h
index 5b136c83f9..d6557057f0 100644
--- a/src/Gui/QSint/actionpanel/actionpanel.h
+++ b/src/Gui/QSint/actionpanel/actionpanel.h
@@ -9,6 +9,7 @@
 #define ACTIONPANEL_H
 
 #include <QFrame>
+#include "qsint_global.h"
 
 
 namespace QSint
@@ -34,7 +35,7 @@ class ActionGroup;
     WinVistaPanelScheme (Windows Vista variation), MacPanelScheme (MacOS variation),
     AndroidPanelScheme (Android variation).
 */
-class ActionPanel : public QFrame
+class QSINT_EXPORT ActionPanel : public QFrame
 {
     typedef QFrame BaseClass;
 
diff --git a/src/Gui/QSint/actionpanel/actionpanelscheme.h b/src/Gui/QSint/actionpanel/actionpanelscheme.h
index 5bd786bb34..a2ebd80571 100644
--- a/src/Gui/QSint/actionpanel/actionpanelscheme.h
+++ b/src/Gui/QSint/actionpanel/actionpanelscheme.h
@@ -12,6 +12,7 @@
 #include <QtCore/QSize>
 
 #include <QtGui/QPixmap>
+#include "qsint_global.h"
 
 
 namespace QSint
@@ -24,7 +25,7 @@ namespace QSint
 
     \image html ActionPanel1.png Default ActionPanel scheme
 */
-class ActionPanelScheme
+class QSINT_EXPORT ActionPanelScheme
 {
 public:
     /** \enum TaskPanelFoldEffect
diff --git a/src/Gui/QSint/actionpanel/androidpanelscheme.h b/src/Gui/QSint/actionpanel/androidpanelscheme.h
index 44e623fe0f..3a47732099 100644
--- a/src/Gui/QSint/actionpanel/androidpanelscheme.h
+++ b/src/Gui/QSint/actionpanel/androidpanelscheme.h
@@ -22,7 +22,7 @@ namespace QSint
 
     \image html ActionPanel5.png Example of the scheme
 */
-class AndroidPanelScheme : public ActionPanelScheme
+class QSINT_EXPORT AndroidPanelScheme : public ActionPanelScheme
 {
 public:
     AndroidPanelScheme();
diff --git a/src/Gui/QSint/actionpanel/macpanelscheme.h b/src/Gui/QSint/actionpanel/macpanelscheme.h
index 2603915054..0d955ccdb9 100644
--- a/src/Gui/QSint/actionpanel/macpanelscheme.h
+++ b/src/Gui/QSint/actionpanel/macpanelscheme.h
@@ -21,7 +21,7 @@ namespace QSint
 
     \image html ActionPanel6.png Example of the scheme
 */
-class MacPanelScheme : public ActionPanelScheme
+class QSINT_EXPORT MacPanelScheme : public ActionPanelScheme
 {
 public:
     explicit MacPanelScheme();
diff --git a/src/Gui/QSint/actionpanel/qsint_global.h b/src/Gui/QSint/actionpanel/qsint_global.h
new file mode 100644
index 0000000000..a6216c0c16
--- /dev/null
+++ b/src/Gui/QSint/actionpanel/qsint_global.h
@@ -0,0 +1,24 @@
+/***************************************************************************
+ *                                                                         *
+ *   Copyright: https://code.google.com/p/qsint/                           *
+ *   License:   LGPL                                                       *
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef QSINT_GLOBAL_H
+#define QSINT_GLOBAL_H
+
+#include <qglobal.h>
+
+#ifdef QSINT_STATICLIB
+#  undef QSINT_SHAREDLIB
+#  define QSINT_EXPORT
+#else
+#  ifdef QSINT_MAKEDLL
+#   define QSINT_EXPORT Q_DECL_EXPORT
+#  else
+#   define QSINT_EXPORT Q_DECL_IMPORT
+#  endif
+#endif
+
+#endif // QSINT_GLOBAL_H
diff --git a/src/Gui/QSint/actionpanel/winvistapanelscheme.h b/src/Gui/QSint/actionpanel/winvistapanelscheme.h
index 0d7219dc6e..07df55cd4d 100644
--- a/src/Gui/QSint/actionpanel/winvistapanelscheme.h
+++ b/src/Gui/QSint/actionpanel/winvistapanelscheme.h
@@ -22,7 +22,7 @@ namespace QSint
 
     \image html ActionPanel4.png Example of the scheme
 */
-class WinVistaPanelScheme : public ActionPanelScheme
+class QSINT_EXPORT WinVistaPanelScheme : public ActionPanelScheme
 {
 public:
     WinVistaPanelScheme();
diff --git a/src/Gui/QSint/actionpanel/winxppanelscheme.h b/src/Gui/QSint/actionpanel/winxppanelscheme.h
index 80d01fdf53..24be48f9fe 100644
--- a/src/Gui/QSint/actionpanel/winxppanelscheme.h
+++ b/src/Gui/QSint/actionpanel/winxppanelscheme.h
@@ -21,7 +21,7 @@ namespace QSint
 
     \image html ActionPanel2.png Example of the scheme
 */
-class WinXPPanelScheme : public ActionPanelScheme
+class QSINT_EXPORT WinXPPanelScheme : public ActionPanelScheme
 {
 public:
     WinXPPanelScheme();
@@ -40,7 +40,7 @@ public:
 
     \image html ActionPanel3.png Example of the scheme
 */
-class WinXPPanelScheme2 : public ActionPanelScheme
+class QSINT_EXPORT WinXPPanelScheme2 : public ActionPanelScheme
 {
 public:
     WinXPPanelScheme2();