C / C++ / MFC

11-May-08 20:08

Hi all,

I m using SDI type application in VC++2005,

i want to know how can calculate the diffrence of two diffrent dates in terms of days.

Please help me for this.

Thanks in Advance.

IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH

Mark Salsbery11-May-08 20:22

Mark Salsbery

11-May-08 20:22

You could use the COleDateTime class.

Subtract one ColeDateTime object from another ColeDateTime object and you'll get
a COleDateTimeSpan object, with which you can use its GetTotalDays() method.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Le@rner11-May-08 20:49

Re: How to calculate diffrence of two dates? [modified]

11-May-08 20:49

it gives Zero value.

please tell me with example,
after calculating i want to show the calculated days in ReadOnly EditBox.

Thanks.

IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH

Rajkumar R11-May-08 21:03

Rajkumar R

11-May-08 21:03

ThatsMe. wrote:
it gives Zero value.

did you used in any variable arg functions like wsprintf with format specifier %d, if so you typecast it to int before hand. say, (int)timeDiff.GetTotalDays().

[Added]

    COleDateTime timeDOB( 1983, 9, 2, 0, 0, 0);
COleDateTime timeToday( 2008, 5, 12, 0, 0, 0);
COleDateTimeSpan timeDiff = timeToday - timeDOB;
TCHAR szBuf[256];
_stprintf(szBuf, _T("No. of Days :%d"), (int)timeDiff.GetTotalDays());

[/Added]

modified on Monday, May 12, 2008 3:15 AM

Le@rner11-May-08 21:20

11-May-08 21:20

Thanks now its working,

plz tell me one more thing after calculating the diff of dates i want to show the no of days in ReadOnly Edit box.

i m converting the integer value in String and set string in EditBox,but it not show at that time when i m using Tab selection or click on Edit Box.

Thanks.

IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH

Mark Salsbery12-May-08 5:13

Mark Salsbery

12-May-08 5:13

ThatsMe. wrote:
i m converting the integer value in String and set string in EditBox,

What and where is the code you are using to do that?

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Le@rner12-May-08 18:13

12-May-08 18:13

<code>
COleDateTimeSpan daydiff=(COleDateTime m_date1-COleDateTime m_date2);
int noofday=(int)daydiff.GetTotalDays();
noofday++;
CString nday,m_no_ofday;
nday.Format("%d",noofday);
//m_no_ofday CString type variable of Edit Box.
//nday gives calculated no of days.
m_no_ofday.SetString(nday);
</code>

IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH

Mark Salsbery13-May-08 5:05

Mark Salsbery

13-May-08 5:05

ThatsMe. wrote:
/m_no_ofday CString type variable of Edit Box.

By that I'm assuming you mean m_no_ofday is a CString attached to the edit
control through the MFC DDX system....

If that's the case, you could just convert the int to that string and call UpdateData()
to move the string contents to the edit control:

COleDateTimeSpan daydiff=(COleDateTime m_date1-COleDateTime m_date2);
int noofday=(int)daydiff.GetTotalDays();
noofday++;
m_no_ofday.Format("%d",noofday);
UpdateData(FALSE);

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

How can i Install TTF font through program using VC++

CPallini11-May-08 21:34

CPallini

11-May-08 21:34

I think it would be more useful if you post your not-working code.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

phanindra varma11-May-08 19:43

Re: How can i Install TTF font through program using VC++

11-May-08 19:43

Hi,
How can i Install TTF font through program in RunTime.???

Thanks

ShilpiP11-May-08 19:54

ShilpiP

11-May-08 19:54

Click Here ->[^] Smile | :)

Yes U Can ...If U Can ,Dream it , U can do it ...ICAN

Re: How can i Install TTF font through program using VC++

phanindra varma1-Jun-08 22:09

Re: How can i Install TTF font through program using VC++

1-Jun-08 22:09

Hi.....

I have gone through that program..In that it was added as resourse. but the requirement as follwos

1)Display all ".ttf" files in the current folder
2)If u select one then it need to be installed.

So, help me in this Regard...support me in the material.

Thanku

Hamid_RT11-May-08 20:05

Re: How can i Install TTF font through program using VC++

11-May-08 20:05

You can use of CFont::Create and use of SetFont for your work and you need to copy your file to Windows/Fonts and use of Install New Font.

phanindra varma12-May-08 0:39

How can i Install TTF font through program

12-May-08 0:39

Thanks...

but i want to install new font through program.....not manually copying.....

anyway thanks!!!

phanindra varma11-May-08 19:41

Re: How can i Install TTF font through program

11-May-08 19:41

Hi,
How can i Install TTF font through program in RunTime.???

Thanks

Sarath C11-May-08 21:11

Sarath C

11-May-08 21:11

TCHAR chFontPath[MAX_PATH] = { 0 };<br />
ExpandEnvironmentStrings( _T( "%windir%\\fonts\\"), chFontPath, MAX_PATH);<br />
if( S_OK == StringCchCat( chFontPath, MAX_PATH, _T("samplefont.ttf")))<br />
{<br />
    CopyFile( _T("path_samplefont.ttf"),chFontPath, TRUE );<br />
}

You may need administrator permission to do this operation

-Sarath.
"Great hopes make everything great possible" - Benjamin Franklin

My blog - Sharing My Thoughts, An Article - Understanding Statepattern

WindowFromDC is returning null when application is in background

V K 211-May-08 19:21

Re: WindowFromDC is returning null when application is in background

11-May-08 19:21

When i am debugging the application the WindowFromDC is returning a valid handle. But on execting the application it is returning null when application is in background.

Any help is appreciated

Regards

Hamid_RT11-May-08 20:05

Re: WindowFromDC is returning null when application is in background

11-May-08 20:05

And your code?

V K 211-May-08 20:11

Re: WindowFromDC is returning null when application is in background

11-May-08 20:11

if (!::IsWindow(*phWnd)) {
*phWnd = ::WindowFromDC(hDC);
}

Hamid_RT11-May-08 20:17

Re: WindowFromDC is returning null when application is in background

11-May-08 20:17

How can you get hdc?

V K 211-May-08 20:25

Re: WindowFromDC is returning null when application is in background

11-May-08 20:25

it was passed to this function from another function.
When i am debugging i am getting the handle. When i am executing i am getting error

Hamid_RT11-May-08 20:44

Re: WindowFromDC is returning null when application is in background

11-May-08 20:44

I think problem is of hDC,are you sure its valid?

V K 211-May-08 20:54

Re: WindowFromDC is returning null when application is in background

11-May-08 20:54

it is a valid hdc

Hamid_RT11-May-08 21:06

Re: WindowFromDC is returning null when application is in background

11-May-08 21:06

But did you see MSDN
"If no window is associated with the specified DC, the return value is NULL." and I guess it returns a null hwnd and when you want to use of this handle you get an error.

V K 211-May-08 22:08