C / C++ / MFC Discussion Boards

Re: How to make Matrix Using C

mmlyh081-Apr-09 4:20

mmlyh08

1-Apr-09 4:20

i need do it using array list or for loop wan... thx

Re: How to make Matrix Using C

Stuart Dootson1-Apr-09 4:26

Stuart Dootson

1-Apr-09 4:26

mmlyh08 wrote:
array list

What do you mean by that? C has no such concept as an 'array list'.

If (as I suspect) this is a homework assignment - do it yourself. Homework's there for you to learn, not (just) because your teacher's a sadistic monster. And if you're not up to doing it...well, software development's not the career for you.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: How to make Matrix Using C

Cedric Moonen1-Apr-09 4:43

Cedric Moonen

1-Apr-09 4:43

I'm really wondering who downvoted you Roll eyes | :rolleyes:

. Anyway, I balanced the vote...

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: How to make Matrix Using C

grassrootkit1-Apr-09 5:26

grassrootkit

1-Apr-09 5:26

How to make Matrix Using C

If C doesn't fit your budget, you could contact Keanu reeves.

Re: How to make Matrix Using C

ThatsAlok1-Apr-09 18:33

ThatsAlok

1-Apr-09 18:33

oh, i am thinking about calling neo!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

variable and classes

durban21-Apr-09 3:30

durban2

1-Apr-09 3:30

How get value of variable that is in class View to
another class CAdodc_MDI()
LRESULT CADO_MDIView::OnGoodbye(WPARAM wParam, LPARAM lParam)
{
CString m_s(L”TEXT”);
}
for example another class:
BOOL CAdodc_MDI::OnInitDialog()

ADD the string:
#include "ADO_MDIView.h"

Set into file of implemetation ( three of variants)
// Adodc_MDI.cpp : implementation file

#include "stdafx.h"
#include "ADO_MDI.h"
//-1 #include "ADO_MDIView.h"
#include "Adodc_MDI.h"
//-3 #include "ADO_MDIView.h"
#include "UpdateDlg.h"
#include "MyModeless2.h"

#include "ADO_MDIView.h"
appwar below errors:

ado_mdiview.h(19) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
ado_mdiview.h(19) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
ado_mdiview.h(19) : warning C4183: 'GetDocument': missing return type; assumed to be a member function returning 'int'

Re: variable and classes

Stuart Dootson1-Apr-09 3:58

Stuart Dootson

1-Apr-09 3:58

Those errors have nothing explicitly to do with getting the variable value - you've got a syntax error somewhere in your code (maybe around line 19 of ado_mdiview.h, perchance?). Of course, it's difficult to tell, as you haven't posted the relevant bit of code!

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: variable and classes

durban21-Apr-09 4:57

durban2

1-Apr-09 4:57

PLEASE, who can more
exactly

Re: variable and classes

David Crow1-Apr-09 6:35

David Crow

1-Apr-09 6:35

Are you practicing sentence fragmentation?

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Re: variable and classes

ThatsAlok1-Apr-09 18:35

ThatsAlok

1-Apr-09 18:35

I can't comment on problem you facing, but spotted one error above :-

CHIVOTIOV wrote:
LRESULT CADO_MDIView::OnGoodbye(WPARAM wParam, LPARAM lParam)
{
CString m_s(L”TEXT”);
}

you forget to return something from above function!

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

How can my C++ program know when a batch file updates?

krrilee1-Apr-09 3:03

krrilee

1-Apr-09 3:03

I'm writing a C++ program which minimizes a batch file to the system tray. I want to add a piece of code which will change the system tray icon if the batch file updates (that is, another line is printed onto the cmd.exe window)

Any ideas on how I could do this?

Thanks

Re: How can my C++ program know when a batch file updates?

Stuart Dootson1-Apr-09 3:16

Stuart Dootson

1-Apr-09 3:16

Why not get your program to execute the batch file itself (using CreateProcess). Then it can capture the batch files output directly[^] rather than having to go through some intermediary. Oh, and your program could write the batch file output to a rich edit box or something?

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

how to use two flags for create file

Jach Mullan1-Apr-09 3:03

Jach Mullan

1-Apr-09 3:03

how do we specify two flags for a create file attribute dwFlagsAndAttributes??

Re: how to use two flags for create file

Cedric Moonen1-Apr-09 3:07

Cedric Moonen

1-Apr-09 3:07

I'm not sure I got your question but if you want to combine two flags into one variable (and that's a general case), you have to use the | operator (OR):

int Flag = FLAG1 | FLAG2;

Does that answer your question ?

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: how to use two flags for create file

Jach Mullan1-Apr-09 4:54

Jach Mullan

1-Apr-09 4:54

Yeah, but i was really confused with the others. thank you.

Re: how to use two flags for create file

Stuart Dootson1-Apr-09 3:18

Stuart Dootson

1-Apr-09 3:18

Use a bit-wise OR to combine them - so, to create a read-only, hidden, system file, you'd specify FILE_ATTRIBUTE_HIDDEN|FILE_ATTRIBUTE_SYSTEM|FILE_ATTRIBUTE_READONLY

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: how to use two flags for create file

ThatsAlok1-Apr-09 18:37

ThatsAlok

1-Apr-09 18:37

BITWISE operator can help!

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

Closing first dialog box while second is still running

VCProgrammer1-Apr-09 2:18

VCProgrammer

1-Apr-09 2:18

Hi all,

I have made a Dialog based application in vc 2008. In my application i am opening second dialog box using DoModal() on a button click event of first dialog box. In second dialog box i am starting a worker thread in my OnInitDialog() function.My problem is while my second dialog box is still doing some work, first dialog box can be closed in the back that is it is active.

Please help me in this

Thanks in advance

Re: Closing first dialog box while second is still running

Rajesh R Subramanian1-Apr-09 2:27

Rajesh R Subramanian

1-Apr-09 2:27

Are you telling that you are able to close your first dialog while the second one is still active, or are you asking how to get this done?

With DoModal(), the runtime will spawn a Modal dialog, which will need to be dismissed to go back to the parent (the window that spawned it). You must use CDialog::Create[^] if you need a modeless dialog.

It is a crappy thing, but it's life -^ Carlo Pallini

Re: Closing first dialog box while second is still running

VCProgrammer1-Apr-09 2:30

VCProgrammer

1-Apr-09 2:30

No i am telling that i am able to close it and i don't want to close it. I am not getting why a modal dialog is behaving like that

Re: Closing first dialog box while second is still running

Rajesh R Subramanian1-Apr-09 2:36

Rajesh R Subramanian

1-Apr-09 2:36

That cannot happen. Have you checked the return value of the dialog that you spawned with DoModal()? Also, when exactly is your modal dialog returning?

It is a crappy thing, but it's life -^ Carlo Pallini

Re: Closing first dialog box while second is still running

VCProgrammer1-Apr-09 2:57

VCProgrammer

1-Apr-09 2:57

Its returning when i close the dialog box but parent dialog box can be closed and i get the ret_value after child dialog box is closed.

Save obj;
int ret_val = obj.DoModal();

Re: Closing first dialog box while second is still running

ThatsAlok1-Apr-09 18:39

ThatsAlok

1-Apr-09 18:39

are you opening your second dialog from some worker/secondary thread.

IMHO, you can never operate on firt dialog if second dialog is open as model dialog!

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

Re: Closing first dialog box while second is still running

David Crow1-Apr-09 3:01

David Crow

1-Apr-09 3:01

What happens if, in the second dialog, you comment out the thread-creation code? In other words, you have one modal dialog opening another.

pointer deletion querry

Deepu Antony1-Apr-09 2:09

Deepu Antony

1-Apr-09 2:09

Hi everybody

I am having a small querry

int * p = new int(10);
int a = 10;
int * q = &a;

then to delete pointer p
delete * p;

Whether pointer q is also created on the heap.
If so how to delete it?
Is q = NULL is correct?

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