Restore OPCDACLIENT_API for dll export/import

Including to CTransaction class and disable CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS

OPCClientToolKit/CMakeLists.txt

@@ -1,6 +1,6 @@
 project(OPCClientToolKit)
 
-set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
+set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS OFF)
 
 set(SOURCE_H OpcEnum.h opccomn.h opcda.h
     OPCClient.h OPCHost.h OPCItemData.h OPCServer.h

OPCClientToolKit/OPCGroup.h

@@ -43,7 +43,7 @@ class CAsyncDataCallback;
 /**
  * Client sided abstraction of an OPC group, wrapping the COM interfaces to the group within the OPC server.
  */
-class COPCGroup
+class OPCDACLIENT_API COPCGroup
 {
   private:
     ATL::CComPtr<IOPCGroupStateMgt> iStateManagement;

OPCClientToolKit/OPCHost.h

@@ -37,7 +37,7 @@ namespace opcda_client
  * Abstract class that represents a PC which may host one or more OPC servers. Provides means of getting a list
  * of OPC servers on the host and creating connections to OPC servers.
  */
-class COPCHost
+class OPCDACLIENT_API COPCHost
 {
     /**
      * TCHAR:    WCHAR if UNICODE is defined, a CHAR otherwise.
@@ -137,7 +137,7 @@ class COPCHost
 /**
  * Used for accessing OPC servers on a remote host. Make use of OpcEnum to browse servers.
  */
-class CRemoteHost : public COPCHost
+class OPCDACLIENT_API CRemoteHost : public COPCHost
 {
   private:
     /**
@@ -177,7 +177,7 @@ class CRemoteHost : public COPCHost
  * Used for accessing OPC servers on a local (this) host. Uses the Component Categories manger to enumerate
  * the OPC servers on the local machine.
  */
-class CLocalHost : public COPCHost
+class OPCDACLIENT_API CLocalHost : public COPCHost
 {
   public:
     CLocalHost();

OPCClientToolKit/OPCItem.h

@@ -37,7 +37,7 @@ class COPCGroup;
  * Provides wrapper for operations that typically exist at the group level (e.g. reads) (it is at this level
  * that OPC supports the operation) however, we provide the operation at this level for ease of use.
  */
-class COPCItem
+class OPCDACLIENT_API COPCItem
 {
   private:
     OPCHANDLE ServersItemHandle;

OPCClientToolKit/OPCItemData.h

@@ -32,7 +32,7 @@ class COPCItem;
 /**
  *Wrapper for OPC data. Hides COM memory management.
  */
-struct OPCItemData
+struct OPCDACLIENT_API OPCItemData
 {
     FILETIME ftTimeStamp;
     WORD wQuality;
@@ -71,7 +71,7 @@ struct OPCItemData
 /**
  * Can't find an ATL autoptr map - this class provides the functionality I want.
  */
-class COPCItemDataMap : public CAtlMap<OPCHANDLE, OPCItemData *>
+class OPCDACLIENT_API COPCItemDataMap : public CAtlMap<OPCHANDLE, OPCItemData *>
 {
   public:
     ~COPCItemDataMap();

OPCClientToolKit/OPCProperties.h

@@ -32,7 +32,7 @@ namespace opcda_client
 /**
  * Holds desciption of a property for an OPC item.
  */
-struct CPropertyDescription
+struct OPCDACLIENT_API CPropertyDescription
 {
     /// properties identifier
     DWORD id;

OPCClientToolKit/OPCServer.h

@@ -51,7 +51,7 @@ struct ServerStatus
 /**
  * Local representation of a local or remote OPC server. Wrapper for the COM interfaces to the server.
  */
-class COPCServer
+class OPCDACLIENT_API COPCServer
 {
   private:
     /**

OPCClientToolKit/Transaction.h

@@ -29,7 +29,7 @@ namespace opcda_client
 {
 #endif
 
-class CTransaction;
+class OPCDACLIENT_API CTransaction;
 
 /**
  * Interface which provides means by which the client can be notified when an asynchronous operation