C / C++ / MFC

Re: c++ win32 , equivilent to DateTime.Now() in asp.net

11-Dec-11 10:37

Is there an equivilent to the DateTime.Now() in asp.net, I'm writing a time stamp to sql server, and wanted to keep the same format.

dbUA->pzDateOpened = some sort of DateTime.Now();

Chandrasekharan P11-Dec-11 20:53

Chandrasekharan P

11-Dec-11 20:53

GetCurrentTime() function should work for you. [^]

Every new day is another chance to change your life.

Re: c++ win32 , equivilent to DateTime.Now() in asp.net

jkirkerx12-Dec-11 4:24

Re: c++ win32 , equivilent to DateTime.Now() in asp.net

12-Dec-11 4:24

I didn't understand how to make the request, but I will look into again today.

Satheesh154612-Dec-11 1:11

Satheesh1546

12-Dec-11 1:11

Hi,

You can use GetLocalTime()..

SYSTEMTIME st;
GetLocalTyme(&st);

Thanks,
Satheesh

Re: c++ win32 , equivilent to DateTime.Now() in asp.net

jkirkerx12-Dec-11 4:23

Re: c++ win32 , equivilent to DateTime.Now() in asp.net

12-Dec-11 4:23

Yeah I saw that, but it looks like I have to build up my Date Time with a structure or something. I didn't understand how to make the request. Perhaps I read it wrong, will look into again today.

You included a sample, will give it a spin today. Thanks.

Richard MacCutchan12-Dec-11 4:59

That's it, done with this one for now.

12-Dec-11 4:59

According to MSDN _ftime[^] is the equivalent.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

jkirkerx12-Dec-11 16:20

Re: That's it, done with this one for now.

12-Dec-11 16:20

Thanks for the help Richard.

I was trying to inject the results into a datetime column in SQL via ODBC, but between the 2, it was hard to nail down the error. I didn't know if it was the format of the data, or ODBC not wanting to accept the LPSYSTEMTIME structure, or the size/precision of the data, which for some reason is 23,3.

Ended up with this for now, it works, I can modify it later if I find something better.

SYSTEMTIME systemTime;			
GetSystemTime(&systemTime);
LPSYSTEMTIME lpSystemTime = &systemTime;
			
swprintf_s(szDateOpened,
	L"%d-%d-%d %d:%d:%d",
	systemTime.wMonth,
	systemTime.wDay,
	systemTime.wYear,

	systemTime.wHour,
	systemTime.wMinute,
	systemTime.wSecond
			);
szDateOpened[wcslen(szDateOpened)] = L'\0';

And then sent it to the ODBC Driver in another function. I just need to figure how how to create a MD5 Hash in UT8 for the Encoded Password, and then this part of the program is done.

L"INSERT INTO UserInfo(FirstName, LastName, UserName, PhraseHint, Phrase, PasswordClear, DateOpened, Email, FrontAdmin, SecurityLevel, Enabled, LastLogin) "
L"VALUES(?, ?, ?, ?, ?, ?, CAST(? as datetime), ?, ?, ?, ?, CAST(? AS datetime) )"

and parameterized the values, that one liner took all day long.

retcode = SQLBindParameter(hstmt, 12, SQL_PARAM_INPUT, SQL_C_WCHAR, SQL_VARCHAR, 23, 3, pzLastLogin, wcslen(pzLastLogin), NULL);

Richard MacCutchan12-Dec-11 22:49

Re: That's it, done with this one for now.

12-Dec-11 22:49

I'm afraid my SQL skills are non-existent, but I would suggest you do not store dates and/or times as text values in a database but as datetime (i.e. binary) values. The remarks section in the documentation[^] suggest how to convert it to a large integer. This seems like a lot of work just to save a simple value, but it is Microsoft.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

jkirkerx15-Dec-11 19:21

Re: c++ win32 , equivilent to DateTime.Now() in asp.net

15-Dec-11 19:21

I casted it as datetime, in the ? mark, so sql server does the conversion. CAST(? as datetime)

I'm starting to find out that SQL Server is not that popular in c++. must be a asp.net thing. Oh well. That was easy compared to hashing the password.

Satheesh154613-Dec-11 17:30

Satheesh1546

13-Dec-11 17:30

Hi,

SYSTEMTIME st;
GetLocalTime(&st);
CString strHour, strMinute, strSecond;
strHour.Format(_T("%d"), st.wHour);
strMinute.Format(_T("%d"), st.wMinute);
strSecond.Format(_T("%d"), st.wSecond);

You can use this to get the current time. I f you need to update the time automatically.Use a timer with one second elapse time, and use this code in OnTimer().

Thanks

Dock an CControlBar into CChidFrame ?

_Flaviu10-Dec-11 9:01

10-Dec-11 9:01

I try this[^] CControlBar, and goes very well .. into CMainFrame ... I try to implement it into CChildFrame, but has failed ... it can be dock an CControlBar ( or extended ) into CChildFrame ?

Thanks !

Richard MacCutchan10-Dec-11 22:09

10-Dec-11 22:09

See here[^].

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

_Flaviu11-Dec-11 6:03

11-Dec-11 6:03

This[^] is the first solution that I've tried, but seems not working in CControlBar case ...

Richard MacCutchan11-Dec-11 22:10

11-Dec-11 22:10

Flaviu2 wrote:
but seems not working

Which means?

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

_Flaviu11-Dec-11 22:38

11-Dec-11 22:38

I try in this way :

C++

// ChildFrm.h
protected:
   CControlBarExt m_wndControlBar;
   CTestDialog m_cDialog;

and

C++

int CChildFrame::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if(CMDIChildWnd::OnCreate(lpCreateStruct) == -1)return -1;

	// TODO: Add your specialized creation code here

	if(! m_wndControlBar.Create(this, &m_cDialog, CString("ControlBar Demo"), IDD_DIALOG1))
	{
		TRACE0("Failed to create dialogbar\n");
		return -1;      // fail to create
	}

	m_wndControlBar.SetBarStyle(m_wndControlBar.GetBarStyle() | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC);
	m_wndControlBar.EnableDocking(CBRS_ALIGN_ANY);
	DockControlBar(&m_wndControlBar);

	return 0;
}

I get follow assetion failure :

C++

ASSERT(pDockBar != NULL);

In the same way can be done CCOntrolBar in CMainFrame and goes well ...

Richard MacCutchan12-Dec-11 0:35

12-Dec-11 0:35

Flaviu2 wrote:
I get follow assetion failure :

Where? We cannot see your screen so have no way of knowing where these messages appear. Please make use of your debugger and trace what is happening in your code.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

_Flaviu12-Dec-11 19:25

how to parse an algebric equation in c++?

12-Dec-11 19:25

I succeded :

C++

int CChildFrame::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if(CMDIChildWnd::OnCreate(lpCreateStruct) == -1)return -1;

	// TODO: Add your specialized creation code here

	if(! m_wndControlBar.Create(this, &m_cDialog, CString("ControlBar Demo"), IDD_DIALOG1))
	{
		TRACE0("Failed to create dialogbar\n");
		return -1;      // fail to create
	}

	m_wndControlBar.SetBarStyle(m_wndControlBar.GetBarStyle() | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC);
	m_wndControlBar.EnableDocking(CBRS_ALIGN_ANY);
	EnableDocking(CBRS_ALIGN_ANY);
	DockControlBar(&m_wndControlBar);

	return 0;
}

and goes well ... thank you very much for your patience. Bye.

rahulvishwakarma9-Dec-11 19:46

rahulvishwakarma

9-Dec-11 19:46

dear friends, I want to take input from user as :-

f(x)= y = ax^2 + bx + c

i.e. custom function input from user then parse it and then integrate it. But I have no idea how to do ir. Please help me or suggest any book.

Richard MacCutchan9-Dec-11 21:22

9-Dec-11 21:22

Try a Google search for "calculator c++", this is a fairly common sample exercise.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Iain Clarke, Warrior Programmer

Iain Clarke, Warrior Programmer9-Dec-11 23:08

9-Dec-11 23:08

If you want to write it, then that's a hard thing. If you just want to use it, look at:
Fast Mathematical Expressions Parser[^] here on codeproject!

Good luck,

Iain.

I am one of "those foreigners coming over here and stealing our jobs". Yay me!

Alan Balkany12-Dec-11 5:46

Alan Balkany

12-Dec-11 5:46

If you try to do everything at once, it's very hard. Breaking it into steps makes it simpler:

1. Turn the expression string into a list of tokens. A token can be a variable name, an operator, or a parenthesis.

2. Turn the token list into a tree of tokens, where each operator token has child tokens of its operands.

3. Integrate the lowest-level sub-expressions, than combine them according to the operators, e.g. the integral of A + B is the integral of A plus the integral of B.

====================================

For step 2, apply two rules to your token list until you have a single operator token left in the list, representing the whole expression. (If you end up with more than one token in the list, you probably started with an illegal expression):

1. If you have the pattern: "(", [token], ")", replace it with [token], i.e. delete parenthesis tokens around a single value.

2. In the most deeply-nested parentheses, replace [token] [operator] [token] in the list with [operator], and set [operator]'s left and right child-node pointers to the two token operands. Do this for the highest-precedence operators first.