C / C++ / MFC

pl_kode wrote:

Please let me know how big or max int can a thread's ID be. i.e. how many digits a thread ID can be.

Also kindly tell me how many, at the max, threads can run at the same time. Max number of threads running at the same time, what is it.

void AlarmCompreMsgDig::OnLvnItemchangedList1(NMHDR *pNMHDR, LRESULT *pResult)
{
	LPNMLISTVIEW pNMLV = reinterpret_cast(pNMHDR);
	m_lstAlarmCompreMsg.SetItemState(-1, 0, LVIS_SELECTED); // first, diselect the row

	int rowIndex = pNMLV->iItem;
	
	CRect rec;  // boundary rectangular that wrap the row
	m_lstAlarmCompreMsg.GetItemRect(rowIndex, rec, LVIR_BOUNDS);


	// a little adjust the rectangular
        rec.top -= 2;
	rec.bottom += 2;

	CDC* cdc = m_lstAlarmCompreMsg.GetDC();

	CPen aPen;
	
        // oldRowIndex is the member of dialog
       if (oldRowIndex == rowIndex){ // this occurs 1st, and 3rd also 
             aPen.CreatePen(PS_SOLID, 1, RGB(0, 0, 0)); // select color Black (background color)
        } 
        else // this occurs 2nd
        {
             aPen.CreatePen(PS_SOLID, 1, RGB(255, 255, 255)); // select color White
             oldRowIndex = rowIndex;   // update oldRowIndex
        }        
	
	CPen* pOldPen = cdc->SelectObject(&aPen); // Select the pen
	
	// Now draw the rectangular
	cdc->Rectangle(rec);

        // select back the old pen
	cdc->SelectObject(pOldPen);
        
        *pResult = 0;
}

tataxin wrote:

But there is something wrong here: this function is called 3 time totally.

typedef struct tagNMLISTVIEW {
    NMHDR hdr;
    int iItem;
    int iSubItem;
    UINT uNewState;
    UINT uOldState;
    UINT uChanged;
    POINT ptAction;
    LPARAM lParam;
} NMLISTVIEW, *LPNMLISTVIEW;

int x = pNMLV->uChanged;
if (x == ){
		// draw rectangular here
	} else if (x == LVIS_FOCUSED){
		// remove old rectangular here
	} else if (x == LVIS_SELECTED){
		// do nothing
	}

tataxin wrote:

int x = pNMLV->uChanged;

tataxin wrote:

if (x == ){

if ((pNMLV->uChanged & LVIF_STATE) != LVIF_STATE)
		return; // state has not changed

	if (pNMLV->uOldState & LVIS_SELECTED)
	{
		// remove old rectangular here
	}
	else if (pNMLV->uNewState & LVIS_SELECTED)
	{
		// draw new rectangular here
	}