C / C++ / MFC

Christian Graus23-Sep-01 23:54

23-Sep-01 23:54

I presume you said it's better to use <vector> ? You can get vector to preallocate the memory so that push_back doesn't reallocate every time. If the two vectors are going to be different sizes, how will one 'become' the other ? You're going to copy some values across but not all ? The vector being copied to grows ? I'm confused....

Christian

As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet.

Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery.

Gérald Mercet24-Sep-01 0:17

Gérald Mercet

24-Sep-01 0:17

As i said, i use an iterative method. In a for loop, for example consider: for(i=1;i<=n;i++)
At the beginning i would declare 2 pointers:
double *Qi1=new double [ni1]
double *Qi=new double[ni]

So, if you consider that i correspond to a date, Qi is a pointer on an array which contains ni+1 values at date i and Qi1 a pointer on an array which contains ni1+1 values at date i-1.
In fact, to calculate the value on the array pointed by Qi, we need to know the values at date i-1. After, we have calculated the values, we need to go to the next step, and calculate value at date i+1, so that Qi "becomes" the preceding array, so i have to consider that values in Qi have to be put in Qi1.

Michael P Butler24-Sep-01 1:33

Michael P Butler

24-Sep-01 1:33

Your explanation and code fragment are a little confusing, perhaps posting a more detailed code fragment would make it clearer.

Michael Smile | :)

Gérald Mercet24-Sep-01 2:14

Gérald Mercet

24-Sep-01 2:14

double *BermudanSwaption::Tab_Alpha(COleDateTime StartDate,COleDateTime SwaptionEndDate,COleDateTime SwapEndDate,int TypeOfStep,int NumberOfStep,int BaseAnnuelle,int JMax,int dt,double dr,double M,_variant_t RateTable,_variant_t VolatilitySurface)
{
//comme pour le calcul du nombre de périodes, on suppose les
//dates deja ajustées. De même le nombre de pas est deja calculé
//et passé en paramètres
//double *Qi1,*Qi;
double Alpha;
int i,j;
int ni,ni1;
COleDateTimeSpan span_dt;
//on veut retourner uniquement la branche basse de l'arbre, c'est
//à dire que pour chaque i, l'état j vaut 0.

span_dt=dt;
Alpha=-log(ZeroCoupon(StartDate,StartDate.operator +(span_dt),SwaptionEndDate,SwapEndDate,BaseAnnuelle,RateTable,VolatilitySurface))/dt;
*pTab_Alpha=Alpha;
for(i=1;i<=NumberOfStep;i++)
{
if(i

Christian Graus24-Sep-01 2:27

24-Sep-01 2:27

double *Qi=new double[2*ni+1];
double *Qi1=new double[2*ni1+1];
*Qi1=1;
for(j=0;j<=2*ni;j++)
{
    *(Qi+j)=Arrow_Debreu(i,j,JMax,dr,dt,M,Alpha,Qi1);
}
Alpha=Alpha_i(StartDate,SwaptionEndDate,SwapEndDate,BaseAnnuelle,RateTable,VolatilitySurface,i,JMax,dr,dt,Qi);
*(pTab_Alpha+i)=Alpha;
for(j=0;j<=2*ni;j++)
{
   *(Qi1+j)=*(Qi+j);
//above, you could see the pb,because Qi and
//Qi1 don't have the same size;
// and i need to do this kind of operation
}
delete[] Qi;
delete[] Qi1;

Using vector you can do this easily. I still don't understand why you are doing this exactly, but using vector you could do the same thing by using the copy algorithm, with a back_inserter if need be, or just as a copy of the second vector is less than or equal to the first. Either way, allocating the vector size first would stop messy memory allocation stuff going on as you continually push_back.

Christian

As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet.

Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery.

DirectX - Its Urgent

23-Sep-01 23:12

We are trying to create a flash support player using DirectX/DirectDraw/DirectShow (Win32API/COM/VC++). Is it possible to create any DirectShow filters which support flash or any flash rendering into DirectDraw surface.

1)Whether DirectX/DirectDraw/DirectShow supports Macromedia media flash files?.
2)If so, what are the codecs available for flash.
3)How to implement Flash support using DirectShow/DirectDraw/Direct3D
4)What are the minimum requirements like OS/software/Tools/Hardware needed?.
5)Is there any other solutions/workarounds to achieve the Macromedia flash support in DirectX.

Kamlesh

Re: DirectX - Its Urgent

Christian Graus23-Sep-01 23:35

Re: Real time graph plotting

23-Sep-01 23:35

Flash has it's own SDK, and I believe is also an ActiveX control ( not sure about that, but on my PC I can add Macromedia Flash Factory object as a registered control ). Have you looked at the Macromedia site ? There is also a web site for flash developers, I don't know the URL but search in Australia for David Mitchie and you will find it.

Christian

As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet.

Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery.

Real time graph plotting

23-Sep-01 22:45

I want an source code for real time graph plotting for discrete event simulation project. I u have any then please send me as early as possible. OR if u know about any resource for concerned project then let me know.

Imran Farooqui

Jonathan de Halleux9-Nov-01 13:44

Jonathan de Halleux

9-Nov-01 13:44

Check article Plot Graphic Library in OpenGL section.

Jonathan de Halleux, Belgium.

How to Send Message to CMainFrame Class To Redraw all child windows

23-Sep-01 20:52

Hello,

I want to made my application to behave in such a way that when i change the color of one view in MDI application i want to redraw all the MDI windows. Is there is any way to do this.....

Thanks in advance....

J. Peter.....

Re: How to Send Message to CMainFrame Class To Redraw all child windows

Steen Krogsgaard24-Sep-01 0:03

Steen Krogsgaard

24-Sep-01 0:03

Look at CDocument::UpdateAllViews. You could record the color change in the document and the call UpdateAllViews using a private hint value. In all the views let the OnUpdate handler do an Invalidate() when lHint == YourPrivateValue.

Cheers
Steen.

"To claim that computer games influence children is rediculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music"

Re: How to Send Message to CMainFrame Class To Redraw all child windows

24-Sep-01 0:31

Thanks for the reply...
Actually i have created many child windows using the architecture (i have MDI application) i have each separate view with the its own document and this view/ document i have loaed in to a new frame...

i want to update these frames ......

Re: How to Send Message to CMainFrame Class To Redraw all child windows

#realJSOP24-Sep-01 1:33

#realJSOP

24-Sep-01 1:33

Put a function in the app class that iterates through all of the doc templates, and iterates through all the documents for each template and call UpdateAllViews(NULL) for each document.

void CMyApp::UpdateAllViews()
{
   POSITION posTemplate = GetFirstDocTemplatePosition();
   while (posTemplate)
   {
      CDocTemplate* pTemplate = (CDocTemplate*)GetNextDocTemplate(posTemplate);
      POSITION posDoc = pTemplate->GetFirstDocPosition();
      while (posDoc)
      {
         CDocument* pDocument = pTemplate->GetNextDoc(posDoc);
         if ((pDocument=) != NULL)
         {
            pDocList->UpdateAllViews(NULL);
         }
      }
   }
}

Re: How to Send Message to CMainFrame Class To Redraw all child windows

24-Sep-01 2:01

Thanks for the Reply....

I was alos following this approach but it is not working as i again used this way to solve my problem......

Smile | :)

Re: How to Send Message to CMainFrame Class To Redraw all child windows

#realJSOP24-Sep-01 2:50

#realJSOP

24-Sep-01 2:50

Then you will have to describe your problem in more detail. What exactly are you trying to update?

There is a parameter list associated with UpdateAllViews() which essentially allows you to control pretty much any aspect of the updating process.

Also, you cannot do this from the CMainFrame class without a moderate amount of extra work.

Re: How to Send Message to CMainFrame Class To Redraw all child windows

24-Sep-01 4:50

Here are the Details what i am facing.....

I Have Multiple frames in my Application. And all these frames are derived from CChildFrame and I have created Three views and documents attached with each frame.

For one frame i loaded one view and exactly one Document...

Now I have a problem for the updation of the frames...

Re: How to Send Message to CMainFrame Class To Redraw all child windows

#realJSOP24-Sep-01 5:35

#realJSOP

24-Sep-01 5:35

You'll have to do three things:

1) Use this function call inside your iterator function (the one I gave you earlier):

posDoc->UpdateAllViews(NULL, (WPARAM)1);

2) In your view->OnUpdate() function, add code to handle the second parameter. If it's set to 1, update the frame like so:

GetParentFrame()->SendMessage(MY_MESSAGE, 0, 0);

3) Add a message handler in your frame class to handle the message.

NetMeeting SDK

tfElep23-Sep-01 16:31

tfElep

23-Sep-01 16:31

I'd like to exchange text, audio or video information between two hosts threw NetMeeting API. But where can I find any tips on this topic? Thanks a lot.

Tiny Flying Elephant loves flying...

Re: NetMeeting SDK

Michael P Butler23-Sep-01 22:20

Michael P Butler

23-Sep-01 22:20

Have you looked at the Samples in the Platform SDK. I found them to be quiet useful when I did a little bit of NetMeeting Video work a while back.

Michael Smile | :)

reading from netware directory

Hong Wye Kean23-Sep-01 15:57

Hong Wye Kean

23-Sep-01 15:57

hello,

i would like to know whether it is possible to use the CreateFile() function
on a netware drive. I have tried to create a handle on a directory by
pointing to \\servername\directory and map drive but somehow the error
return saying that the path is not found. Is there a problem with the
protocol cos the netware that i am using runs on IPX protocol.

Any help would be great.

Thanks
wye kean

Chris's Grid Control Doc/View

Matt Newman23-Sep-01 15:53

Matt Newman

23-Sep-01 15:53

How would I set up file saving/opening on this?

-Matt Newman Suspicious | :suss:

Christian Graus23-Sep-01 16:12

23-Sep-01 16:12

In OnSerialise, read and write the individual grid positions, and the other info you want ( grid size, column sizes, etc. )

Christian

As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet.

Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery.

Matt Newman23-Sep-01 16:24

Matt Newman

23-Sep-01 16:24

OK. One last question I have pointer m_pGrid declared in C%Name%View how do I access it in C%Name%Doc? Thanks for the help.

-Matt Newman Suspicious | :suss:

Christian Graus23-Sep-01 16:40

23-Sep-01 16:40

CMainFrame* pMain = (CMainFrame*)AfxGetMainWnd();

CMyView * pView = (CMyView*)pMain->GetActiveView();
pView->m_pGrid->etc.

Christian

As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet.

Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery.