C / C++ / MFC

Rajkumar R wrote:

// set the file name to the member of your dialog class so that in the InitDialog create the file

class CBmpDlgDlg: public CDialog
{
public:
	CString m_strFileName;

CFile f;
       f.Open(m_strFileName, CFile::modeRead);
       CArchive ar(&f, CArchive::load);

Rajkumar R wrote:

debug assertion will direct you to find what is the failure and where it happens.

Rajkumar R wrote:

what prevents you to code in onInitDialog, it is the override for doing dialog initialization, OnCreate is called before creating the child controls if i remember correctly.

toxcct wrote:

XML serialization is even better.

toxcct wrote:

also, one has to be very careful with serialzed filed if moved from one system to another, because some types can be written/read differently depending on the system...

Kwanalouie wrote:

I would like to...simply code my file input/output in basically the oldstyle - just opening and closing files and storing and retrieving the variable info that is necessary for my program.

Kwanalouie wrote:

Is it simple to mix the oldstyle file I/O with the SDI...

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
	}