C / C++ / MFC

Return Value

If the function succeeds, the return value is the starting address of the mapped view.

If the function fails, the return value is NULL. To get extended error information, call GetLastError.

T.RATHA KRISHNAN wrote:

At line 5, the query is executed and the result is assigned to the array. When I print the elements of playerLst array only 11 player names are printed(not what I expect. It has to print 99 names since each country has 11 players and there are 9 cty's).

for(int i = 0; i<ctyLst.size();i++)
{
   queryStr = L"Select Name From Test WHERE Team ='";
   queryStr += ctyLst[i].trim();
   queryStr += L"'";
   queryStr += L"ORDER BY RANDOM() LIMIT 11";
   playerLst = SQLdb.Query(queryStr);
   for(int j = 0; j<playerLst.size();j++)
   {
      printf("%s \n",playerLst[j].c_str());
   }
}

T.RATHA KRISHNAN wrote:

I wonder why this printf statement:
printf("No.of Players in the List: %d \n",playerLst.size()); prints 11 even if it outputs 99 unique names. It has to print 99 only?
If I give printf inside the for loop it prints No. Players as 11 at each iteration.

for(int i = 0; i<ctyLst.size();i++)
{
   queryStr = L"Select Name From Test WHERE Team ='";
   queryStr += ctyLst[i].trim();
   queryStr += L"'";
   queryStr += L"ORDER BY RANDOM() LIMIT 11";
   array<stringc> playersTmpLst = SQLdb.Query(queryStr);
   
   // !!! IMPORTANT: I'm not familiar with Irrlicht engine so I append the elements one by one. !!!
   // Check out the Irrlicht documentation and you will probably find a better way
   // to append one array to another (something like using std::copy).
   for(int j = 0; j<playersTmpLst.size(); j++)
   {
      playerLst.push_back(playersTmpLst[j]);
   }
}

// Now here we will print all of the players at once
for(int n = 0; n<playerLst.size(); n++)
{
   printf("%s \n", playerLst[n].c_str());
}

_AFXCOLL_INLINE void*& CPtrList::GetNext(POSITION& rPosition) // return *Position++
	{ CNode* pNode = (CNode*) rPosition;
		ASSERT(AfxIsValidAddress(pNode, sizeof(CNode))); //locate here 
		if( pNode == NULL )
			AfxThrowInvalidArgException();
		rPosition = (POSITION) pNode->pNext;
		return pNode->data; }

LRESULT CtestSDRDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
    if(message==WM_HOTKEY)
    {
        if (wParam==identiferForHelp)
        {
            if(m_bShow)
            {
                UnregisterHotKey(this->m_hWnd,identiferForTest);
                theApp.m_bShorcutAllow=false;
            }
            else
            {
                RegisterHotKey(this->m_hWnd,identiferForTest,0,'T');
                theApp.m_bShorcutAllow=true;
            }
            m_bShow=!m_bShow;
        }
        else if(wParam==identiferForTest)
        {
            AfxMessageBox(_T("hotkey 'T' invoked"));
        }
    }

    return CDialog::WindowProc(message, wParam, lParam);
}