C / C++ / MFC

VeganFanatic wrote:

Should I simply add more code and add formal constructors and destructors?

vector* p = new myvector;
delete p; //worng: will destroy only "vector" not "myvector"

{
   myvector v;
   //whatever you want with v, including vector functionality
}

2 bugs found.
> recompile ...
65534 bugs found.

Dialog1 ::Onok()
{

	HWND hShareWnd = NULL;
	UpdateData();
	bDesktopShareStarted = 	!bDesktopShareStarted ;
	if(bDesktopShareStarted)
	{
		int width = GetSystemMetrics(SM_CXSCREEN);
		int height = GetSystemMetrics(SM_CYSCREEN);
		int x = 0;
		int y =0;

		CVariableRegion VariableRgnDlg;   ////dialog 2 
		if(VariableRgnDlg.DoModal() ==IDOK)
		{
		
			hShareWnd = VariableRgnDlg.GetShareWindow();
			width = VariableRgnDlg.GetShareWidth();
			height = VariableRgnDlg.GetShareHeight();
			x = VariableRgnDlg.GetShareXPosition();
			y= VariableRgnDlg.GetShareYPosition();
			if(m_bEnableAVIRecording)
				EnableAVIRecording();
			else
				EnableAVIRecording(FALSE);
			//Session
			ZeroMemory(szBuffer,sizeof(szBuffer));
			GetDlgItemText(IDC_EDIT_CODE,szBuffer,sizeof(szBuffer));
			lLength = _tcslen(szBuffer) + 1 ; //reusing the same variable
			SetRegInfo(LASTUSED_SESSION,szBuffer,REG_SZ,&lLength);
			
			
			
			
			
			//Session pass
			ZeroMemory(szBuffer,sizeof(szBuffer));
			GetDlgItemText(IDC_EDIT_PASS,szBuffer,sizeof(szBuffer));
			lLength = _tcslen(szBuffer); //reusing the same variable
			SetRegInfo(LASTUSED_SESSION_PASS,szBuffer,REG_SZ,&lLength);
			
			
			
			
			//Client Name
			ZeroMemory(szBuffer,sizeof(szBuffer));
			GetDlgItemText(IDC_EDIT_CLIENT_NAME,szBuffer,sizeof(szBuffer));
			lLength = _tcslen(szBuffer); //reusing the same variable
			SetRegInfo(LASTUSED_USERNAME,szBuffer,REG_SZ,&lLength);
			
			
						
			
			//Record AVI 
			lLength = sizeof(m_bEnableAVIRecording); //reusing the same variable
			m_bEnableAVIRecording = IsDlgButtonChecked(IDC_CHECK_AVI_REC);
			SetRegInfo(LASTOPTION_AVI,(LPTSTR)&m_bEnableAVIRecording,REG_DWORD,&lLength);
			
			
			StartDesktopShare(hShareWnd,width,height,x,y,GetDlgItem(IDC_TARGETWND)->m_hWnd);
			GetDlgItem(IDC_BUTTON_DSK_SHARE)->SetWindowText(TEXT("Stop Share"));
		
		}
		else
		{
			StopDesktopShare();
			GetDlgItem(IDC_BUTTON_DSK_SHARE)->SetWindowText(TEXT("Start Share"));
			bDesktopShareStarted = 	!bDesktopShareStarted ;
		}

	
	}
	else
	{
		StopDesktopShare();
		GetDlgItem(IDC_BUTTON_DSK_SHARE)->SetWindowText(TEXT("Start Share"));
	}
}





dialog 2 code//
in dialog 2 on button click this function is called.
long CVariableRegion::GetWindowsList()
{
	HWND hListBox = NULL;
	TCHAR sWindowCount[100] = {0};
	int nWindowsCount = 0;
	CWnd *hDeskopWnd = NULL;
	TCHAR szWindowCountTitle[MAX_PATH]={0};

	hListBox = GetDlgItem(IDC_WIN_LIST)->m_hWnd;
	ListBox_ResetContent(hListBox);
	ZeroMemory(sWindowCount,sizeof(sWindowCount));
	ZeroMemory(szWindowCountTitle,sizeof(szWindowCountTitle));

	LoadString(GetModuleHandle(NULL),IDS_STRING_PLEASEWAIT,szWindowCountTitle,sizeof(szWindowCountTitle));
	SetDlgItemText(IDC_WIN_CNT,szWindowCountTitle);
	Sleep(100);

	hDeskopWnd = GetDesktopWindow() ;
	WindowsHandle ( hDeskopWnd -> m_hWnd, ( LPARAM ) hListBox ) ;
	EnumWindows ( WindowsHandle, ( LPARAM ) hListBox ) ; 
	nWindowsCount = ListBox_GetCount(hListBox);
	
	_stprintf(sWindowCount,TEXT("Windows : %d"),nWindowsCount);
	SetDlgItemText(IDC_WIN_CNT,sWindowCount);
	return 0;
}



BOOL CALLBACK WindowsHandle ( HWND hwnd, LPARAM lParam )
{

	DWORD       dwExtent;
	HDC         hDCListBox;
	HFONT       hFontOld;
	HFONT		hFontNew;
	TEXTMETRIC	tm;
	CWnd		*hWindow;
	CString		strTitle;
	SIZE		Size;
	TCHAR		szCurTitle[MAX_PATH]		={0};
	TCHAR		szCurParentTitle[MAX_PATH]	={0};
	HWND		hListBox;
	CWnd		*pComboBox;
	HWND		hWndListBox;
	long		lExtent;

	hWindow		= NULL;
	dwExtent	= 0;
	hDCListBox	= NULL;
	hFontNew	= NULL;
	hFontOld	= NULL;
	Size.cx		= 0;
	Size.cy		= 0;
	pComboBox	= NULL;
	hWndListBox = NULL;
	lExtent		= 0;
	hListBox	= ( HWND ) lParam ;


	//Get Current Window Handle
	hWindow = CWnd::FromHandle ( hwnd ) ;

	//GetCurrent Window Title
	hWindow -> GetWindowText ( strTitle ) ;
	
	//Check Window Visibility and Window Title Length
	if(hWindow->IsWindowVisible() && (strlen(strTitle) > 0 ) )
	{
		ZeroMemory(szCurTitle,sizeof(szCurTitle));
		ZeroMemory(szCurParentTitle,sizeof(szCurParentTitle));

		pComboBox = CWnd::FromHandle ( hListBox ) ;

		GetWindowText(GetParent(pComboBox->m_hWnd),szCurTitle,sizeof(szCurTitle));
		GetWindowText(GetParent(GetParent(pComboBox->m_hWnd)),szCurParentTitle,sizeof(szCurParentTitle));
		
	
		if( (_tcsicmp(szCurTitle,strTitle) != 0 ) && (_tcsicmp(szCurParentTitle,strTitle) != 0 ) )
			if(_tcsicmp(strTitle,TEXT("Program Manager")) !=0 )
			( ( CListBox * ) pComboBox )->AddString (strTitle ) ;


		//By default WS_HSCROLL of window sytle not supported for Listbox  for that following code are required.

		hWndListBox		= pComboBox->m_hWnd;


		hDCListBox = GetDC(hWndListBox);
			hFontNew = (HFONT)::SendMessage(hWndListBox, WM_GETFONT, NULL, NULL);
			hFontOld = (HFONT)SelectObject(hDCListBox, hFontNew);
			GetTextMetrics(hDCListBox,&tm);
			dwExtent = GetTextExtentPoint(hDCListBox, strTitle , (strlen(strTitle )+ tm.tmAveCharWidth),&Size);
			SelectObject(hDCListBox, hFontOld);
		ReleaseDC(hWndListBox, hDCListBox);

		lExtent = pComboBox->SendMessage(LB_GETHORIZONTALEXTENT);
		if(lExtent < Size.cx)
		{
			lExtent = Size.cx;
			pComboBox->SendMessage(LB_SETHORIZONTALEXTENT,lExtent);
		}
					
	}

	return TRUE ;
} 

int i = 2;
int j = ++i;
j += ++i;

1. ++i increments i (so i=3) and returns a reference to i.
2. The second ++i increments i (so i=4) and returns a reference to i.
3. The + is called with the two references. Both are dereferenced and added (4+4).

 int i = 2;<br />
<br />
        int j = ++i + i++ + ++i + i++ + ++i;<br />
<br />
        cout<<"Value of j: "<<j;