C / C++ / MFC Discussion Boards

basementman4-Mar-04 6:39

4-Mar-04 6:39

first off, your __int64 variable is NOT 64 bytes long. It is 64 BITS long, which, when divided by 8 bits per byte, is 8 bytes. So, you should pass 8 for the second param ( or sizeof(__int64) ).

ar.Write(&number,8);
-- or --
ar.Write(&number,sizeof(__int64));

onwards and upwards...

Re: __int64 question

Shay Harel4-Mar-04 6:42

Shay Harel

4-Mar-04 6:42

dooooooooooouuuuuuuuuuughhhhhhhhhhh !!!!!!!!!

Thanks for pointing my stupidity, that's an excellent proof for why you should not skip lunch.

Shay

Re: __int64 question

BlackDice4-Mar-04 5:57

BlackDice

4-Mar-04 5:57

Try using the LARGE_INTEGER data type. Text between asterisks is text quoted directly from the MSDN documentation on the data type

***********************
LARGE_INTEGER

The LARGE_INTEGER structure is used to represent a 64-bit signed integer value.

Note Your C compiler may support 64-bit integers natively. For example, Microsoft® Visual C++® supports the __int64 sized integer type. For more information, see the documentation included with your C compiler.

typedef union union
{ struct
{ DWORD LowPart;
LONG HighPart;
}; LONGLONG QuadPart;
} LARGE_INTEGER, *PLARGE_INTEGER;
*************************************

hope this helped!

If it's broken, I probably did it

bdiamond

Re: __int64 question

Steve S4-Mar-04 6:49

Steve S

4-Mar-04 6:49

Darn. Beat me to it. I was going to suggest doing something similar and then using the standard CArchive operators on the smaller bits.

Steve S

Re: __int64 question

BlackDice4-Mar-04 8:47

BlackDice

4-Mar-04 8:47

well I'm glad to see I beat somebody to something for once Cool | :cool:

If it's broken, I probably did it

bdiamond

Re: __int64 question

Mike Dimmick4-Mar-04 6:08

Mike Dimmick

4-Mar-04 6:08

Write your own operator<< and operator>> functions.

Stability. What an interesting concept. -- Chris Maunder

Re: __int64 question

David Crow4-Mar-04 7:13

David Crow

4-Mar-04 7:13

I once wrote an extension to the CArchive class that handled serialization of the __int64 type. I can send it to you if you'd like.

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

Re: __int64 question

Shay Harel4-Mar-04 7:37

Shay Harel

4-Mar-04 7:37

First of all, you can send it, it never hurts to share someone elses wisdom.
Second, I already utilized the Write/Read functions of the archive.

Thanks!

Re: __int64 question

jbarton4-Mar-04 10:00

jbarton

4-Mar-04 10:00

I prefer to write a global operator>> and operator<< for datatypes like this, so that I can still use the syntax of a stream operator with the archive.

<br />
CArchive& operator<<( CArchive& archive, __int64 value )<br />
   {<br />
   archive.Write( &value, sizeof(__int64) );<br />
   return archive;<br />
   }<br />
<br />
CArchive& operator>>( CArchive& archive, __int64 value )<br />
   {<br />
   archive.Read( &value, sizeof(__int64) );<br />
   return archive;<br />
   }<br />

This works for simple data types. I use this for bool as VC6.0 doesn't implement serialization for bool, but this should also work fine for __int64.

Best regards,
John

Re: __int64 question

khb5-Jul-09 10:13

khb

5-Jul-09 10:13

Thanks for the tip! But don't forget to pass in the second parameter of operator>> by reference (__int64& value). Then it works perfectly!

Regards
Marcus

Re: __int64 question

basementman4-Mar-04 9:35

basementman

4-Mar-04 9:35

I finally beat you to an answer.... you're slacking off!!;P

onwards and upwards...

Re: __int64 question

David Crow4-Mar-04 9:46

David Crow

4-Mar-04 9:46

My apologies. I was working on an article that had me sidetracked.

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

Custom Build for Empty Project?

Brian van der Beek4-Mar-04 5:19

Brian van der Beek

4-Mar-04 5:19

I have an empty Visual C++ 6.0 project that I use to build a bunch of projects (by setting them as dependant projects). But before I start building I want to update the build numbers in the resource files of these projects.
I created a little app. for this, but I can't seem to find a way to kick it off, because my empty project does not have a custum build step.
Anyone got a clue on how to do this?

Re: Custom Build for Empty Project?

basementman4-Mar-04 7:20

basementman

4-Mar-04 7:20

Did you look at this [^] article here at CP?

onwards and upwards...

Re: Custom Build for Empty Project?

Brian van der Beek5-Mar-04 5:09

Brian van der Beek

5-Mar-04 5:09

I just saw it and that is not exactly what I need: I want to increment the file and product version numbers and also have to do some version control stuff before I do this.
I just need to know how I can a Custom Build option/tab to an empty project.
Anyone got a clue on how to do this ?

POINTER TO DIALOG

Caoimh4-Mar-04 5:16

Caoimh

4-Mar-04 5:16

I NEED A POINTER TO ANOTHER DIALOG, WOULD SOMEONE PLEASE DETAIL HOW I CAN DO THIS. PLEASE

Kind Regards
Kevin

Re: POINTER TO DIALOG

Maximilien4-Mar-04 5:18

Maximilien

4-Mar-04 5:18

CDialog* pDlg = &AnotherDialog;

please say more, and we'll be glad to help you more ...

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: POINTER TO DIALOG

Caoimh4-Mar-04 5:52

Caoimh

4-Mar-04 5:52

What I'm trying to do is as follows: I've DialogA and DialogB. DialogA has a EDIT BOX (say EBOX1). Dialog B consists of a Button (say BUTTON1). When I press BUTTON1 on DialogB, I want a message to appear on EBOX1 of DialogA.

I would like to use the API SetDlgItemText

Suggestion very much appreciated.

Re: POINTER TO DIALOG

Maximilien4-Mar-04 7:15

Maximilien

4-Mar-04 7:15

you need to pass DialogA to DialogB to be able to access it.

something like this draft :

...
/// dlgA already created somewhere.
DialogB dlgB;
dlgB.SetOtherDialog( &dlgA );
...

DialogB::SetOtherDialog( DialogA* pDlgA )
{
  m_pDlgA = pDlgA;
}
...
DialogB::OnButtonClick(/*whatever*/)
{
  if ( m_pDlgA != NULL )
  {
    m_pDlgA->SetTextOnControl( /* some text */ );
  }
}

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: POINTER TO DIALOG

David Crow4-Mar-04 7:15

David Crow

4-Mar-04 7:15

Haven't you asked this same question twice before? Are the responses you're getting not working? The ones I've seen look right on the money.

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

Re: POINTER TO DIALOG

BlackDice4-Mar-04 5:21

BlackDice

4-Mar-04 5:21

also see my answer to 'MFC Dialog member sharing'. You should be able to see it by clicking 'next' at the bottom of this page

If it's broken, I probably did it

bdiamond

Re: POINTER TO DIALOG

Robert A. T. Káldy4-Mar-04 22:40

Robert A. T. Káldy

4-Mar-04 22:40

Where have you defined the dialog classes? In MainFrame or directly in some function?

Robert-Antonio

"CRAY is the only computer, which runs an endless loop in just 4 hours"

visual c++ with opengl ( 3d Graphing)

Jeff TTT4-Mar-04 5:12

Jeff TTT

4-Mar-04 5:12

anybody have idea in creating a pie chart n bar chart (read data from file) with visual c++ n opengl programming?

Horizontal & vertical print page

Anonymous4-Mar-04 4:54

Anonymous

4-Mar-04 4:54

I want print in MFC in a same document an horizontal and a vertical page !
How can I do ?

Re: Horizontal & vertical print page

basementman4-Mar-04 5:48

basementman

4-Mar-04 5:48

You'll need to set up a DEVMODE for each page orientation and call ResetDC to change the current orientation from/to Portrait or Landscape.

onwards and upwards...

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.