🚀 go-pugleaf

hol� !
I have some problems with the two DIB's functions GetDIBColorTable and
SetDIBColorTable.
How can I use this two functions ?
Where is my error ?
Here is some lines of my code:

/////////////////
     CBitmap *pBitmap=pDoc->GetBitmap();
     CDC memDC;
     memDC.CreateCompatibleDC(pDC);
     CBitmap *pOldBitmap=memDC.SelectObject(pBitmap);
      RGBQUAD *pRGB = new RGBQUAD[256];
      for (int i=0;i<=255;i++)
       {
        pRGB->rgbRed=int(255*( ((double)rand())/((double)RAND_MAX) ));;
        pRGB->rgbGreen=int(255*( ((double)rand())/((double)RAND_MAX) ));;
// Random colors generation
        pRGB->rgbBlue=int(255*( ((double)rand())/((double)RAND_MAX) ));;
        pRGB->rgbReserved=0;
       }
      UINT C=::SetDIBColorTable(memDC,0,256,pRGB);
// Changing the colors of the DIB
      DWORD E=GetLastError();
// looking at an error

  FILE *F; F=fopen("C.txt","wt"); fprintf(F,"NCOLORS=%lu\nERROR=%lu\n",C,E);
fclose(F);    // writing to a file to be read
//////////////////

this comes from my OnDraw(CDC *pDC) function of my View Class;

The ERROR is return as 6, that is to say "6  The handle is invalid.
ERROR_INVALID_HANDLE "

When I use GetDIBColorTable this is the same errors.

Can someone help me to use this two functions !

thanks you
dond@lune.u-strasbg.fr