C / C++ / MFC

James R. Twine wrote:

The maximum size of a character buffer is what your software specifications specify!

void Function1()
{
	enum { buffersize = 1024 };
 
	char buffer[buffersize];
}
 

void Function2()
{
	enum { buffersize = 2048 };
 

	char buffer[buffersize];
}

CFileFind finder;
//find files from current directory
BOOL bWorking = finder.FindFile(L"*.*");
while (bWorking)
{
   bWorking = finder.FindNextFile();
   if (finder.IsHidden())
   {
    //hidden file
   }
}

amitmistry_petlad wrote:

I need to display the file open dialog and browse directory dialog at the center of the screen

/////////////////////////////////////////////////////////////////////////////
// Centering dialog support (works for any non-child window)

void CWnd::CenterWindow(CWnd* pAlternateOwner)
{
	ASSERT(::IsWindow(m_hWnd));

	// determine owner window to center against
	DWORD dwStyle = GetStyle();
	HWND hWndCenter = pAlternateOwner->GetSafeHwnd();
	if (pAlternateOwner == NULL)
	{
		if (dwStyle & WS_CHILD)
			hWndCenter = ::GetParent(m_hWnd);
		else
			hWndCenter = ::GetWindow(m_hWnd, GW_OWNER);
		if (hWndCenter != NULL)
		{
			// let parent determine alternate center window
			HWND hWndTemp =
				(HWND)::SendMessage(hWndCenter, WM_QUERYCENTERWND, 0, 0);
			if (hWndTemp != NULL)
				hWndCenter = hWndTemp;
		}
	}

	// get coordinates of the window relative to its parent
	CRect rcDlg;
	GetWindowRect(&rcDlg);
	CRect rcArea;
	CRect rcCenter;
	HWND hWndParent;
	if (!(dwStyle & WS_CHILD))
	{
		// don't center against invisible or minimized windows
		if (hWndCenter != NULL)
		{
			DWORD dwAlternateStyle = ::GetWindowLong(hWndCenter, GWL_STYLE);
			if (!(dwAlternateStyle & WS_VISIBLE) || (dwAlternateStyle & WS_MINIMIZE))
				hWndCenter = NULL;
		}

 		MONITORINFO mi;
		mi.cbSize = sizeof(mi);

		// center within appropriate monitor coordinates
		if (hWndCenter == NULL)
		{
			HWND hwDefault = AfxGetMainWnd()->GetSafeHwnd();

			GetMonitorInfo(
				MonitorFromWindow(hwDefault, MONITOR_DEFAULTTOPRIMARY), &mi);
			rcCenter = mi.rcWork;
			rcArea = mi.rcWork;
		}
		else
		{
			::GetWindowRect(hWndCenter, &rcCenter);
			GetMonitorInfo(
				MonitorFromWindow(hWndCenter, MONITOR_DEFAULTTONEAREST), &mi);
			rcArea = mi.rcWork;
		}
	}
	else
	{
		// center within parent client coordinates
		hWndParent = ::GetParent(m_hWnd);
		ASSERT(::IsWindow(hWndParent));

		::GetClientRect(hWndParent, &rcArea);
		ASSERT(::IsWindow(hWndCenter));
		::GetClientRect(hWndCenter, &rcCenter);
		::MapWindowPoints(hWndCenter, hWndParent, (POINT*)&rcCenter, 2);
	}

	// find dialog's upper left based on rcCenter
	int xLeft = (rcCenter.left + rcCenter.right) / 2 - rcDlg.Width() / 2;
	int yTop = (rcCenter.top + rcCenter.bottom) / 2 - rcDlg.Height() / 2;

	// if the dialog is outside the screen, move it inside
	if (xLeft < rcArea.left)
		xLeft = rcArea.left;
	else if (xLeft + rcDlg.Width() > rcArea.right)
		xLeft = rcArea.right - rcDlg.Width();

	if (yTop < rcArea.top)
		yTop = rcArea.top;
	else if (yTop + rcDlg.Height() > rcArea.bottom)
		yTop = rcArea.bottom - rcDlg.Height();

	// map screen coordinates to child coordinates
	SetWindowPos(NULL, xLeft, yTop, -1, -1,
		SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE);
}

amitmistry_petlad wrote:

Is it real need to make the main screen in the center for display the system window in center?

John R. Shaw wrote:

Also they specifically said Win32 and not some function that depends on MFC.

John R. Shaw wrote:

not using the Win32 API directly

John R. Shaw wrote:

If you look further down in the posts (the one with no replies) you will see my center window solution.

John R. Shaw wrote:

The only problem with it is that you need a handle to the window;

John R. Shaw wrote:

which common dialog boxes do not give you unless you over ride (hook) the class (not a C++ class) and create them directly.

John R. Shaw wrote:

I do know where you are coming from and apologize if you thought otherwise.

amitmistry_petlad wrote:

ofn.hwndOwner