hello:
I get a activex controls (.OCX file) from manufacturer, this active controls can access a PCI card. I want to build a GUI to control this card. I use dumpcpp to create a "dospotpc.h" and "dospotpc.cpp" file:

dumpcpp {74676A0F-BB65-48A0-8044-F453692E9A8A} -o dospotpc

in file "dospotpc.h"
Qt Code: 
  1. /****************************************************************************
  2. **
  3. ** Namespace DOSPOTPCLib generated by dumpcpp from type library
  4. ** C:\Program Files\DoSpotPC.OCX\DoSpotPC.ocx
  5. **
  6. ****************************************************************************/
  7.  
  8. #ifndef QAX_DUMPCPP_DOSPOTPCLIB_H
  9. #define QAX_DUMPCPP_DOSPOTPCLIB_H
  10.  
  11. // Define this symbol to __declspec(dllexport) or __declspec(dllimport)
  12. #ifndef DOSPOTPCLIB_EXPORT
  13. #define DOSPOTPCLIB_EXPORT
  14. #endif
  15.  
  16. #include <qaxobject.h>
  17. #include <qaxwidget.h>
  18. #include <qdatetime.h>
  19. #include <qpixmap.h>
  20.  
  21. struct IDispatch;
  22.  
  23.  
  24. // Referenced namespace
  25.  
  26. namespace DOSPOTPCLib {
  27.  
  28.  
  29. class DOSPOTPCLIB_EXPORT _DDoSpotPC : public QAxObject
  30. {
  31. public:
  32.     _DDoSpotPC(IDispatch *subobject = 0, QAxObject *parent = 0)
  33.     : QAxObject((IUnknown*)subobject, parent)
  34.     {
  35.         internalRelease();
  36.     }
  37.  
  38.     /*
  39.     Method AboutBox
  40.  
  41.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  42.     */
  43.     inline void AboutBox();
  44.  
  45.     /*
  46.     Method doGetDetectorsName
  47.  
  48.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  49.     */
  50.     inline int doGetDetectorsName(int numDev, QString& DetSN1, QString& DetSN2);
  51.  
  52.     /*
  53.     Method doGetDeviceNumber
  54.  
  55.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  56.     */
  57.     inline int doGetDeviceNumber(int Hardware, int& numDev);
  58.  
  59.     /*
  60.     Method doGetMeasureData
  61.  
  62.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  63.     */
  64.     inline int doGetMeasureData(int numDev, QVariant& Xo, QVariant& Yo, QVariant& Po);
  65.  
  66.     /*
  67.     Method doGetMeasureDataEx
  68.  
  69.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  70.     */
  71.     inline int doGetMeasureDataEx(int numDev, double& Xo, double& Yo, double& Po);
  72.  
  73.     /*
  74.     Method doGetQuadPower
  75.  
  76.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  77.     */
  78.     inline int doGetQuadPower(int numDev, QVariant& PQ1, QVariant& PQ2);
  79.  
  80.     /*
  81.     Method doSetHardware
  82.  
  83.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  84.     */
  85.     inline int doSetHardware(int Hardware, int numDev);
  86.  
  87.     /*
  88.     Method doSetSystemType
  89.  
  90.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  91.     */
  92.     inline void doSetSystemType(int AppName);
  93.  
  94.     /*
  95.     Method doSetWavelength
  96.  
  97.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  98.     */
  99.     inline int doSetWavelength(int numDev, int Channel, int Wave);
  100.  
  101. // meta object functions
  102.     static const QMetaObject staticMetaObject;
  103.     virtual const QMetaObject *metaObject() const { return &staticMetaObject; }
  104.     virtual void *qt_metacast(const char *);
  105. };
  106.  
  107. // skipping event interface _DDoSpotPCEvents
  108.  
  109. // Actual coclasses
  110. class DOSPOTPCLIB_EXPORT DoSpotPC : public QAxWidget
  111. {
  112. public:
  113.     DoSpotPC(QWidget *parent = 0, Qt::WindowFlags f = 0)
  114.     : QAxWidget(parent, f)
  115.     {
  116.         setControl("{74676a0f-bb65-48a0-8044-f453692e9a8a}");
  117.     }
  118.  
  119.     /*
  120.     Method AboutBox
  121.  
  122.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  123.     */
  124.     inline void AboutBox();
  125.  
  126.     /*
  127.     Method doGetDetectorsName
  128.  
  129.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  130.     */
  131.     inline int doGetDetectorsName(int numDev, QString& DetSN1, QString& DetSN2);
  132.  
  133.     /*
  134.     Method doGetDeviceNumber
  135.  
  136.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  137.     */
  138.     inline int doGetDeviceNumber(int Hardware, int& numDev);
  139.  
  140.     /*
  141.     Method doGetMeasureData
  142.  
  143.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  144.     */
  145.     inline int doGetMeasureData(int numDev, QVariant& Xo, QVariant& Yo, QVariant& Po);
  146.  
  147.     /*
  148.     Method doGetMeasureDataEx
  149.  
  150.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  151.     */
  152.     inline int doGetMeasureDataEx(int numDev, double& Xo, double& Yo, double& Po);
  153.  
  154.     /*
  155.     Method doGetQuadPower
  156.  
  157.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  158.     */
  159.     inline int doGetQuadPower(int numDev, QVariant& PQ1, QVariant& PQ2);
  160.  
  161.     /*
  162.     Method doSetHardware
  163.  
  164.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  165.     */
  166.     inline int doSetHardware(int Hardware, int numDev);
  167.  
  168.     /*
  169.     Method doSetSystemType
  170.  
  171.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  172.     */
  173.     inline void doSetSystemType(int AppName);
  174.  
  175.     /*
  176.     Method doSetWavelength
  177.  
  178.     For more information, see help context 0 in C:\Program Files\DoSpotPC.OCX\DoSpotPC.hlp.
  179.     */
  180.     inline int doSetWavelength(int numDev, int Channel, int Wave);
  181.  
  182. // meta object functions
  183.     static const QMetaObject staticMetaObject;
  184.     virtual const QMetaObject *metaObject() const { return &staticMetaObject; }
  185.     virtual void *qt_metacast(const char *);
  186. };
  187. ...................................
To copy to clipboard, switch view to plain text mode 

in class "DoSpotPC", this member function prototype:
Qt Code: 
  1. inline int doGetDeviceNumber(int Hardware, int& numDev);
To copy to clipboard, switch view to plain text mode 
is not correct, according to the manual, this member function prototype should be
Qt Code: 
  1. short doGetDeviceNumber(short Hardware, short* numDev);
To copy to clipboard, switch view to plain text mode 

I get stuck at here, the parameter 1 type should be a pointer. if I use this function like this:
Qt Code: 
  1. int devNum;
  2. s->doGetDeviceNumber(1, devNum);
To copy to clipboard, switch view to plain text mode 
I will get following error:
"Error calling IDispatch member: Type mismatch in parameter 1"

please give me some help, thx.