Managed C++/CLI Discussion Boards

to check status of an application using a c++ program

zulfisyed1237864-Oct-07 5:45

4-Oct-07 5:45

is it possible to check the status of an application(exe file) whether running or not using a c++ program, if it is running i need to close the application, how can i do that?

Re: to check status of an application using a c++ program

Mark Salsbery4-Oct-07 8:04

Mark Salsbery

4-Oct-07 8:04

You should be posting your questions on the Visual C++/MFC board.
This board is for managed C++.

To find a running application you can use these APIs:
EnumProcesses(), OpenProcess(), GetModuleFileNameEx(), CloseHandle()

I'm not sure how you're going to gracefully force the other app
to close.

Mark

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

Will this code create a memory leak ??

dreamz64804-Oct-07 3:08

dreamz6480

4-Oct-07 3:08

Byte b = 10;
Object^ value = b;
BYTE byteValue = (BYTE) value ;
void* pValue = & (byteValue);

Re: Will this code create a memory leak ??

led mike4-Oct-07 4:50

led mike

4-Oct-07 4:50

dreamz6480 wrote:
Will this code create a memory leak ??

No just a mess

Re: Will this code create a memory leak ??

George L. Jackson4-Oct-07 5:33

George L. Jackson

4-Oct-07 5:33

I wouldn't do it.

"We make a living by what we get, we make a life by what we give." --Winston Churchill

Ref Classes in Win32 dll

dreamz64804-Oct-07 2:00

dreamz6480

4-Oct-07 2:00

Hi everyone,

We have a VC++ RPC Server developed in VC8 . This server hosts a number of drivers developed as Win32 dlls...

We now have a new requirement, we need this RPC Server to host some dlls developed in c#. Since the RPC Server cannot host C# dlls, we have a developed a intrefacing module developed as a Win32 dll. This dll has a unmanaged section as well as a managed section (developed as ref classes ).... The managed classes will load the c# dlls and handle communication b/w the RPC Server and c# dlls...

In such as scenario, will garbage collection automatically occur????

Re: Ref Classes in Win32 dll

led mike4-Oct-07 4:51

led mike

4-Oct-07 4:51

dreamz6480 wrote:
In such as scenario, will garbage collection automatically occur????

There wouldn't be much point to it if it wasn't automatic

Re: Ref Classes in Win32 dll

George L. Jackson4-Oct-07 5:38

George L. Jackson

4-Oct-07 5:38

Yes, garbage collection will occur automatically. However, your problem is what happens to your unmanaged resources when it does occur.

"We make a living by what we get, we make a life by what we give." --Winston Churchill

Dialog box WM_CLOSE

artihcv4-Oct-07 1:47

artihcv

4-Oct-07 1:47

I want to popup a message, while closing (x) the dialog box.. how to do that.. I am using modeless dialog..can anyone help..

chitra

Re: Dialog box WM_CLOSE

KarstenK4-Oct-07 1:56

KarstenK

4-Oct-07 1:56

overwrite the onsyscomman() in your dialog box. Cool | :cool:

Greetings from Germany

Connectionstring out of app.config

cad-JC3-Oct-07 23:43

cad-JC

3-Oct-07 23:43

I'm having a windows forms application project. On the form there's a datagridview with data of a table out of the datasources. The connectionstring in the datasource is made by the add new datasource wizard and is : Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\test\Tabel-XML.mdb
Changing it in the _Tabel_XMLDataset.h file doesn't do anything and changes after a new build.

Now I'd like to know if it's possible to change my data source, so make it variable. I saw something about the use of app.config but how do i have to do this then so that the data source of my datagridview is changed without rebuilding my project it each time after creating a new databaseconnection. I'd like to define the databaseconnection in an external file (like app.config) and then use this databaseconnection for my project. How is this done?

Thanks for helping me out

Help needed in Borland C++ Builder [modified]

__yash__3-Oct-07 22:44

__yash__

3-Oct-07 22:44

hi I need to call the following function somewhere in a program:
void __fastcall TFormMain::btnUpdateClick(TObject *Sender)
{.....}
This is the event of mouse-click on a button.
How can i call this function in the program itself (which otherwise gets called on 'mouse-click'??

Re: Help needed in Borland C++ Builder

Christian Graus3-Oct-07 23:03

Christian Graus

3-Oct-07 23:03

Does Builder support Microsoft .NET, or are you in the wrong forum ?

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: Help needed in Borland C++ Builder

__yash__4-Oct-07 0:03

__yash__

4-Oct-07 0:03

No, BUilder doesnt support Microsoft.NET...it apparently is not a Microsoft product

Re: Help needed in Borland C++ Builder

Christian Graus4-Oct-07 0:20

Christian Graus

4-Oct-07 0:20

Borland do do products that support .NET, I thought. But, if that's not one, try the visual c++ forum.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Form Designer requires first class - VS2005

earlgraham3-Oct-07 11:39

earlgraham

3-Oct-07 11:39

I want to create some data classes for my Form but the designer requires the first class be for the form. Is there a cleanest way to add this class to the same document as the form’s design?

Thanks

Programmer
Glenn Earl Graham
Austin, TX

Re: Form Designer requires first class - VS2005

George L. Jackson3-Oct-07 17:27

George L. Jackson

3-Oct-07 17:27

Put your data classes in a header file and include it before your Form class. Also, you may need to add some namespace references for it to compile properly.

"We make a living by what we get, we make a life by what we give." --Winston Churchill

question about thread C++

argun222-Oct-07 12:24

argun22

2-Oct-07 12:24

I have implementation problems with consumer and procedur. How I can improve this code for good at synchronous communicating?

#include fcntl.h
#include semaphore.h
#include pthread.h
#include stdlib.h
#include stdio.h
#include sys/types.h
#include unistd.h

sem_t *mySemaphore ;

#define BUFFERSIZE 1000000
char boundedBuffer[BUFFERSIZE] ;
int filled = -1 , empty = -1 ;

void Produce(void *data) {
int i = 0 ;
while ( i < BUFFERSIZE ) {
boundedBuffer[++filled] = 'A' ;
i++ ;
}
}

void Consume(void *data) {
int i ;
while ( i < BUFFERSIZE) {
if ( boundedBuffer[++empty] != 'A' )
printf("Error consume != A\n"); ;
i++ ;
}
}

int main(int argc, char * argv[]) {
pthread_t p1, p2 ;
int l = 0 ;

mySemaphore = sem_open("MySemaphore",O_CREAT) ;

for ( l = 0 ; l < BUFFERSIZE; l++) boundedBuffer[l] = '.' ;

/* Create our threads */
pthread_create(&p1, NULL,(void *(*)(void *)) Produce, boundedBuffer);
pthread_create(&p2, NULL,(void *(*)(void *)) Consume, boundedBuffer);

/* Wait for our threads */
pthread_join(p1, NULL);
pthread_join(p2, NULL);

return 0 ;
}

Re: question about thread C++

Christian Graus2-Oct-07 13:39

Christian Graus

2-Oct-07 13:39

There is no .NET code in your post, you are therefore in the wrong forum. Try the Visual C++ forum.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Forum help

smartiejoe30-Sep-07 0:23

smartiejoe

30-Sep-07 0:23

Hi everybody

I am new member and have recently started developing my site. PLease don't have a go atme if this hte wrong programming language as i have a very limited knowledge of programming, but anyway. Please could someone give me the code or tell me how to write a forum for my website. I need to be able to put it in visual web developer 2005

thanks

smartiejoe

making firends
wherever you go
just making friends

Re: Forum help

Malcolm Smart30-Sep-07 0:50

Malcolm Smart

30-Sep-07 0:50

This is my son!! Go easy on him. I have already given him the necessary abuse for posting in the wrong forum.

And he will be changing his sig!

<mod> I've just read his post - "please give me the code" - unbelievable!!! You all have full permission to go for him!

I'll go and have a word....with a sharp stick Smile | :)

</mod>

"More functions should disregard input values and just return 12. It would make life easier." - comment posted on WTF
"This time yesterday, I still had 24 hours to meet the deadline I've just missed today."

Re: Forum help

Mark Salsbery30-Sep-07 7:12

Mark Salsbery

30-Sep-07 7:12

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

Re: Forum help

George L. Jackson30-Sep-07 2:02

George L. Jackson

30-Sep-07 2:02

Sorry, You are on the wrong web site. You might want to visit: http://www.asp.net/downloads/starter-kits/[^].

"We make a living by what we get, we make a life by what we give." --Winston Churchill

Questions about reading binary files [modified]

GentooGuy28-Sep-07 13:47

GentooGuy

28-Sep-07 13:47

Hi
I've got a jpg file which I'd like to read.
When using od in UNIX, I can get a hex version of its contents:

$ od -x file.jpg  | head<br />
0000000      d8ff    e1ff    8711    7845    6669    0000    4949    002a<br />
0000020      0008    0000    000b    010e    0002    0015    0000    0092<br />
0000040      0000    010f    0002    0018    0000    00b2    0000    0110<br />
0000060      0002    0005    0000    00d2    0000    0112    0003    0001<br />
0000100      0000    0001    0000    011a    0005    0001    0000    00e2<br />
0000120      0000    011b    0005    0001    0000    00ea    0000    0128<br />

When using this simple program, most of the values I read have a strange value:

#include "stdafx.h"<br />
#include <iostream><br />
#include <fstream><br />
 <br />
using namespace std;<br />
ifstream::pos_type size;<br />
char * memblock;<br />
<br />
<br />
int main () <br />
{<br />
  ifstream file ("y:\\EXIF\\sanyo-vpcg250.jpg", ios::in|ios::binary);<br />
  if (file.is_open())<br />
  {<br />
    size = file.tellg();<br />
    memblock = new char [size];<br />
    file.seekg (0, ios::beg);<br />
    file.read (memblock, size);<br />
    file.close();<br />
<br />
    cout << "the complete file content is in memory";<br />
	<br />
	char x=memblock[0];<br />
    delete[] memblock;<br />
  }<br />
  else cout << "Unable to open file";<br />
  return 0;<br />
}

The x value becomes 0xfd in the debugger (in vs.net using windows xp).
What's going wrong? And how can I get an output like the one using od?

-- modified at 19:58 Friday 28th September, 2007

Woops, should be moved to: http://www.codeproject.com/script/comments/forums.asp?forumid=1647

Re: Questions about reading binary files

Mark Salsbery28-Sep-07 15:16

Mark Salsbery

28-Sep-07 15:16

The first byte you should see is 0xFF.

Try changing the memblock type to BYTE (unsigned char) since you're
working in binary.

After the read() call, look at memblock in the debugger. Should be FF D8 FF E1...

Mark

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

Last Visit: 31-Dec-99 18:00 Last Update: 20-May-24 6:09

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