How to get and send a CPP Object value?

[Charles Kwon]

Hello All

I tried to Get and sending a CPP object value for OpenCV.

I use hb_retptr() function when get a object pointer.

But, I have no Idea for sending  the object to C function.

My code is like blow:

// prg part

#define IMREAD_COLOR 1

FUNCTION Main()

    LOCAL pImg    

    pImg := cvImread("test.jpg",IMREAD_COLOR )

  //  ?pImg

    INIT_OPENCV( pImg )

   

    ?"OK"

RETURN NIL

/*

 C Part

*/

HB_FUNC( CVIMREAD )

{

  LPSTR lpName = (LPSTR) hb_parc(1);

  int iFlag  = hb_parni(2);  

  Mat image;

  image = imread( lpName, iFlag );

  hb_retptr( &image );

}

HB_FUNC( INIT_OPENCV )

{

 Mat* img = (Mat *) hb_parptr(1);

 Mat image = Mat(* img );     // Is it correct?

//

Please give me a Idea and many thanks!

Regards,

Charles KWON

[Charles Kwon]

Hello

I found "Mat"  is very strange and It seems be scope of class object variables.

And I just change code like blow:

HB_FUNC( _CVIMREAD )

{

  LPSTR lpName = (LPSTR) hb_parc(1);

  int iFlag  = hb_parni(2);    

  PHB_ITEM pItem = hb_param( 3, HB_IT_ANY );

  static Mat __img = imread( lpName, iFlag );

  hb_itemPutPtr( pItem, &__img);  

  hb_retptr( &__img );     

  

}

HB_FUNC( CVIMREAD )

{

  LPSTR lpName = (LPSTR) hb_parc(1);

  int iFlag  = hb_parni(2);    

  int iPos   =  hb_parni(3);      

  static Mat image[100] ;

    

  image[iPos] = imread( lpName, iFlag );    

  hb_retptr(  &image[iPos] );  

}

2021년 12월 1일 수요일 오전 10시 32분 6초 UTC+9에 Charles Kwon님이 작성: