Click here to Skip to main content

C / C++ / MFC

Run an exe from MFC app

koumodaki30-Jul-07 4:09

30-Jul-07 4:09

I am programming a MFC application in which I have to start another independently developed application on click of a button and continue with my application.
I could use _execv() but the control does not return to my application, until the other application is closed. Is there any other way to do this??

Re: Run an exe from MFC app

Iain Clarke, Warrior Programmer30-Jul-07 4:16

Iain Clarke, Warrior Programmer

30-Jul-07 4:16

Look for 2 API calls:

CreateProcess is the raw win32 one, or you may be better off with ShellExecute (a bit friendler)

Iain.

Re: Run an exe from MFC app

Roberto Italy30-Jul-07 21:12

30-Jul-07 21:12

Try to use the standard spawn() family of functions, using
_P_WAIT or _P_NOWAIT
as the 'mode'parameter.

Roberto

Re: Run an exe from MFC app

Hamid_RT31-Jul-07 21:14

31-Jul-07 21:14

Does ShellExecute helpful?

WhiteSky

post thread message()

shakumar_2230-Jul-07 3:59

30-Jul-07 3:59

Hi
In my vc++ 6.0 i used

THREADFUNCTION(WPARAM &wp,LPARAM &lp)
{
CString t_str;
t_str.format("%s",wp);
AfxmessageBox(t_str);
}

i Received the correct out put, here no problem.

I Compiled my programme in Visual studio 2005(vc 8.0)
It shows compile error , so iremoved all "&".
eg :(THREADFUNCTION(WPARAM wp,LPARAM lp) no compile error.

but there was an error in displaying result(its displaying some symbols)

THREADFUNCTION(WPARAM wp,LPARAM lp)
{
CString t_str;
t_str.format("%s",wp); /**** error ***/
AfxmessageBox(t_str);
}

how to convert WPARAM TO STRING in Visua Studio 2005.

Awaiting for the result.

Regards
shakumar

shakumar

Re: post thread message()

Iain Clarke, Warrior Programmer30-Jul-07 4:20

Iain Clarke, Warrior Programmer

30-Jul-07 4:20

Is it a UNICODE thing? I read recently that VC2005 defaults to unicode.

So, if you post the message in ASCII, then your thread function is using it as unicode, then you'll get a bunch of gibberish (if you're lucky).

Have you tried doing:

PostThreadMessage (blah, (WPARAM)_T("My String"), blah)

rather than:

PostThreadMessage (blah, (WPARAM)"My String", blah)

?

Iain.

Re: post thread message()

shakumar_2230-Jul-07 4:38

30-Jul-07 4:38

Thanks for your Reply

I used String pointer

CString t_str="hai";
CString* p_str;
p_str=new CString (t_str);
PostThreadMessage(WM_USER+100,(WPARAM)p_str,0);

so can i use like this
PostThreadMessage(WM_USER+100,(WPARAM)_T(p_str),0);

regards
shakumar

shakumar

Re: post thread message()

Iain Clarke, Warrior Programmer30-Jul-07 5:06

Iain Clarke, Warrior Programmer

30-Jul-07 5:06

1/ Did you bother trying? If so, you'd have found out the answer which is:

2/ No, and it will hopefully give you an error message when compiling.

What I would do next is to go a bit simpler, and post:

PostThreadMessage (WM_USER + 100, 1234, 5678);

and see if the thread message bit is working properly. If they are, then see what the value of p_str is before you post it, and when it is received. And so on. If that is OK, use the Memory tool of the debugger to see the contents pointed to by p_str.

One thought that occurs to me:

p_str points to a valid bit of memory when you post it. Does it still point to a valid bit later? (ie when the message is received). Is it possible that the CStrings destructor has been called, and the memory is now filled with junk?

Iain.

How to put an MFC Dialog box project into another existing project

vladimir7230-Jul-07 2:29

30-Jul-07 2:29

Can anyone tell me how to put an MFC Dialog box project into another existing project in visual studio C++ 6.o.

Thanks
Vladimir

Re: How to put an MFC Dialog box project into another existing project

Nelek30-Jul-07 2:40

30-Jul-07 2:40

Menu "project" option "add to project" and then including whatever you need wherever you need it

Greetings.

--------
M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?

Re: How to put an MFC Dialog box project into another existing project

vladimir7230-Jul-07 2:51

30-Jul-07 2:51

Hello MDV,

That didn't worked. Can you give me an example how to fit a dialog box class into an exisiting project.

Greetings,

Vladimir

Re: How to put an MFC Dialog box project into another existing project

Hans Dietrich30-Jul-07 3:12

30-Jul-07 3:12

Take a look at this.

Best wishes,
Hans

[CodeProject Forum Guidelines] [How To Ask A Question] [My Articles]

Re: How to put an MFC Dialog box project into another existing project

vladimir7230-Jul-07 3:58

30-Jul-07 3:58

It didn't worked. Can you show me an example how you do that?

greetings,

Vladimir

Re: How to put an MFC Dialog box project into another existing project

Nelek30-Jul-07 20:23

30-Jul-07 20:23

Ok, First of all take a look on the link Hans Dietrich gave you.

Anyways... what I told you should work, I have added classes to my project and I had no problems. The only thing you have to take care is to create a resource to fit your DialogBox. I mean, you create an empty DialogBox, close it, goes to the file *.rc in the *.cpp path and edit it.

A trick to do this is to look for the name of a resource into all the files of the project, I mean... just added a DialogBox had the IDD_DIALOG1 name, just use this in the search, the results will come where below in "Search in files1" (1st option is the compiler errors, 2nd debug, 3rd "search in files1", 4th search...) Open the ApplicationName.rc file with a doble click there. Then you will see a file with ALL your resources of the active project in code, not in grafics.

Look for your IDD_DIALOG1 (or the name you wanna give to it), erase the contents and replace it with the code of the dialog you wanna import. That will let you to have the new dialog with all the references/names of the old one.

After this, reboot your VC++ and you should have the Dialog in your resources as it is. Doubleclick to create an associated class, remove the new files and add the *.cpp and *.h of the dialog.

The only problem with it is that a DialogBox-based application can have some code that collisionate with the intialisation of a DOC-View app. But is nothing that you can't deal.

Anyways, I have taken a look to Hans Dietrich article and it will work very good, and its "cleaner". What I told you is a "bruto"'s way.

Good luck and have fun Smile | :)

Smile | :)

Greetings.

--------
M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?

re: Fast Searching...

Bryster30-Jul-07 1:54

30-Jul-07 1:54

Hi Here is the Problem:

To access a Datafile which contains 26 Million addresses and find a given address. The Datafile is an ascii text file and is fixed

What I have come up with:
1. Sort the 26 Million addresses into Postcode order. (I have application for this)
2. Using FSEEK look at the MIDDLE of the file and compare using STRNCMP the POSTCODE for searching, against the POSTCODE within the Datafile.
3. Using the result move the file pointer backwards from the middle (half it) or forwards and keep checking until a match is found.
This will loop for roughly 24-25 times and not 26 Million.

Is there a better way?

Re: re: Fast Searching...

Randor 30-Jul-07 1:58

30-Jul-07 1:58

I would recommend converting the text file and using a binary tree for faster searching.

I can think of two libraries you could possibly use to accomplish this:

QDBM
http://qdbm.sourceforge.net/[^]

SQLITE
http://www.sqlite.org/[^]

Best Wishes,
-David Delaune

Re: re: Fast Searching...

Bryster30-Jul-07 2:25

30-Jul-07 2:25

Thank you, I will have a look at these. Big Grin | :-D

Big Grin | :-D

Re: re: Fast Searching...

Hans Dietrich30-Jul-07 3:17

30-Jul-07 3:17

Probably the easiest way to speed searching is to divide the big file into N smaller files, maybe organized by a partial postcode. Then, after you have selected the correct (smaller) file, the search will be that much faster. This involves a minimum or presort setup.

Best wishes,
Hans

[CodeProject Forum Guidelines] [How To Ask A Question] [My Articles]

Re: re: Fast Searching...

Bryster30-Jul-07 4:12

30-Jul-07 4:12

Thank you, that sounds like a good idea.

re: Problems with Progress Bar

Bryster30-Jul-07 1:25

30-Jul-07 1:25

Hi I have recently upgraded from Windows 2000 to Windows XP Professional and have noticed that when I run my applications the progress bar stops and the application looks as if it has crashed, but after a while finishes.
I have Mcafee Virus protection running in the background, is this causing the problem?

The code is a simple "UpdateData(FALSE)" instruction after setting the ProgressBar.SetPos() which is looping until an EOF instruction.

Any Ideas?

Thank you in advance

Brian. D'Oh! | :doh:

D'Oh! | :doh:

Re: re: Problems with Progress Bar

Hans Dietrich30-Jul-07 3:21

30-Jul-07 3:21

1. Disable McAfee and observe the result.

2. Put a ProgressBar.RedrawWindow(); after the UpdateData(FALSE); and observe the result.

Best wishes,
Hans

[CodeProject Forum Guidelines] [How To Ask A Question] [My Articles]

Re: re: Problems with Progress Bar

Bryster30-Jul-07 4:24

30-Jul-07 4:24

Unfortunately this has not solved the problem.

Thanks for trying.

Re: re: Problems with Progress Bar

krmed30-Jul-07 4:53

30-Jul-07 4:53

After your UpdateData(FALSE) add a

ProgressBar.UpdateWindow()

I believe that will solve your problem.

Hope that helps.

Karl - WK5M
PP-ASEL-IA (N43CS)
PGP Key: 0xDB02E193
PGP Key Fingerprint: 8F06 5A2E 2735 892B 821C 871A 0411 94EA DB02 E193

Re: re: Problems with Progress Bar

Mark Salsbery30-Jul-07 6:20

30-Jul-07 6:20

Why do you need to call UpdateData? Are other controls changing or just the progress control?

Mark

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

Java | [Coffee]

can not delete a file

George_George30-Jul-07 0:13

30-Jul-07 0:13

Hello everyone,

I am using the following program to delete all files in a specified directory. But when running, no files could be deleted, and the related error information is,

failed with error 5 -- access denied. Anything wrong with the program?

<br />
remove_non_empty_directory ("c:\\temp\\non_empty_dir\\*");<br />
<br />
// ErrorExit implementation from MSDN<br />
// http://msdn2.microsoft.com/en-us/library/ms680582.aspx<br />
<br />
int remove_non_empty_directory (const char* path)<br />
{<br />
<br />
  WIN32_FIND_DATA FindFileData;<br />
  HANDLE hFind;<br />
  int rtn;<br />
<br />
  hFind = FindFirstFile(path, &FindFileData);<br />
  if (hFind == INVALID_HANDLE_VALUE) <br />
  {<br />
        FindClose(hFind);<br />
        return -1;<br />
  } <br />
  else <br />
  {<br />
      // delete 1st file<br />
      rtn = DeleteFile(&(FindFileData.cFileName));<br />
<br />
      if (0 == rtn)<br />
      {<br />
         ErrorExit (NULL);<br />
      }<br />
<br />
      // List all the other files in the directory and delete all files<br />
      while (FindNextFile(hFind, &FindFileData) != 0) <br />
      {<br />
            rtn = DeleteFile(&(FindFileData.cFileName));<br />
      }<br />
<br />
      FindClose(hFind);<br />
  }<br />
<br />
  return 0;<br />
        <br />
}<br />

thanks in advance,
George

General News Suggestion Question Bug Answer Joke Praise Rant Admin

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