C / C++ / MFC

RajiRaghu4-Jun-06 20:00

RajiRaghu

4-Jun-06 20:00

Notepad is not displayed. Have to display Notepad along with the contents.

Thanks
Raji

ThatsAlok4-Jun-06 20:38

ThatsAlok

4-Jun-06 20:38

RajiRaghu wrote:
Notepad is not displayed. Have to display Notepad along with the contents.

this code will help!

::ShellExecute(NULL,"open","notepad.exe",NULL,NULL,SW_SHOWNORMAL);
Sleep(120);

HWND hNoteWnd=::FindWindow("Notepad",NULL);
 char *MY="alok";

 if(hNoteWnd)
 {
     HWND hEditWnd=FindWindowEx(hNoteWnd,NULL,"Edit",NULL);

     if(hEditWnd)
     {
         ::SendMessage(hEditWnd,WM_SETTEXT,0,(long)MY);
     }
 }

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

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

FarPointer4-Jun-06 20:59

FarPointer

4-Jun-06 20:59

Hi ,
Check this out :-
Taken From Jeff Prosise:-

Sometimes the need arises to launch a process and delay just long enough to make sure the process is started and responding to user input. If process A launches process B and process B creates a window, for example, and process A wants to send that window a message, process A might have to wait for a moment after ::CreateProcess returns to give process B time to create a window and begin processing messages. This problem is easily solved with the Win32 ::WaitForInputIdle function:

STARTUPINFO si;
::ZeroMemory (&si, sizeof (STARTUPINFO));
si.cb = sizeof (STARTUPINFO);
PROCESS_INFORMATION pi;

if (::CreateProcess (NULL, _T ("C:\\Windows\\Notepad"), NULL,
NULL, FALSE, NORMAL_PRIORITY_CLASS, NULL, NULL, &si, &pi)) {
::CloseHandle (pi.hThread);
::WaitForInputIdle (pi.hProcess, INFINITE);
// Get B's window handle and send or post a message.
::CloseHandle (pi.hProcess);
}

::WaitForInputIdle suspends the current process until the specified process begins processing messages and empties its message queue. I didn't show the code to find the window handle because there isn't a simple MFC or API function you can call to convert a process handle into a window handle. Instead, you must use ::EnumWindows, ::FindWindow, or a related function to search for the window based on some known characteristic of the owning process.

Regards,
FarPointer

RajiRaghu4-Jun-06 21:47

RajiRaghu

4-Jun-06 21:47

::ShellExecute(NULL,"open","notepad.exe",NULL,NULL,SW_SHOWNORMAL);
Sleep(120);

HWND hNoteWnd=::FindWindow("Notepad",NULL);
char *MY="Check";

if(hNoteWnd)
{
CWnd* hEditWnd=FindWindowEx(hNoteWnd,NULL,"Edit",NULL);

if(hEditWnd)
{
::SendMessage((HWND)hEditWnd,WM_SETTEXT,0,(long)MY);
}
}
Used the above code. Getting Notepad opened without the contents. Any clues please?

Thanks
Raji

ThatsAlok4-Jun-06 22:11

ThatsAlok

4-Jun-06 22:11

RajiRaghu wrote:
::ShellExecute(NULL,"open","notepad.exe",NULL,NULL,SW_SHOWNORMAL);
Sleep(120);

Instead of this code, use this code suggested by FarPointer

STARTUPINFO si;
::ZeroMemory (&si, sizeof (STARTUPINFO));
si.cb = sizeof (STARTUPINFO);
PROCESS_INFORMATION pi;

if (::CreateProcess (NULL, _T ("C:\\Windows\\Notepad"), NULL,
    NULL, FALSE, NORMAL_PRIORITY_CLASS, NULL, NULL, &si, π)) {
    ::CloseHandle (pi.hThread);
    ::WaitForInputIdle (pi.hProcess, INFINITE);
    // Get B's window handle and send or post a message.
    ::CloseHandle (pi.hProcess);
}

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

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

Hamid_RT4-Jun-06 22:17

Hamid_RT

4-Jun-06 22:17

try this

<br />
::SendMessage((HWND)hEditWnd,WM_SETTEXT,0,(long)MY);<br />
::SendMessage(hEditWnd->m_hWnd,WM_SETTEXT,0,(LPARAM)MY);<br />
<br />
::ShellExecute(NULL,_T("open"),_T("notepad.exe"),NULL,NULL,SW_SHOWNORMAL);<br />
Sleep(120);<br />
<br />
HWND hNoteWnd=::FindWindow(_T("Notepad"),NULL);<br />
LPCTSTR MY;<br />
MY=_T("Check");<br />
<br />
CWnd* hEditWnd=FindWindowEx(hNoteWnd,NULL,_T("Edit"),NULL);<br />
<br />
::SendMessage(hEditWnd->m_hWnd,WM_SETTEXT,0,(LPARAM)MY);<br />

and i test it work

whitesky

RajiRaghu4-Jun-06 22:56

RajiRaghu

4-Jun-06 22:56

It works! Thanks to you all

Thanks
Raji

_AnsHUMAN_ 4-Jun-06 20:38

_AnsHUMAN_

4-Jun-06 20:38

// Let us suppose the structure is :

struct abc{<br />
char name[255];<br />
};

//now in the function OnXYZClicked() //or whatever you have

abc q;<br />
      strcpy(q.name,"abc");<br />
  ShellExecute(NULL,"open","notepad",q.name,"",1);<br />
  Sleep(500);// Necessary to give the time for window to show itself optimize this<br />
  HWND hwnd=::FindWindow(NULL,"abc.txt - notepad");<br />
  POINT pt={100,100};<br />
  HWND edit=::ChildWindowFromPoint (hwnd,pt);<br />
  ::SendMessage (edit,WM_SETTEXT,(WPARAM)"hello",(LPARAM)q.name);<br />

// Now when you run this for the first time no text is seen instead you are prompted to create a new file?
//The next time you run your application the file pops up with the text.
This is only a crude way of doing what you want to . You can find a better method but this is what clicked me right now.
Does this fit your needs?

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Event Viewer

ashokvishnu4-Jun-06 19:26

ashokvishnu

4-Jun-06 19:26

Hi Gurus,

Does anyone know how windows eventviewer is implementing the export functionality. That is we can export the event list as tab delimited txt format or comma delimited csv file format. I didnt find any suitable functions for this in windows event logging api. The issue is we have to develop a custome eventviewer and these funtionalities has to be included. Any suggestions are most welcome.

Thanks

C++beginer

Re: Event Viewer

Anilkumar K V5-Jun-06 0:40

Anilkumar K V

5-Jun-06 0:40

No function is there. I think EV is list control and MS provided functions to get value from list and record to file

Anil

Re: Event Viewer

ashokvishnu5-Jun-06 1:09

ashokvishnu

5-Jun-06 1:09

So what your are saying is that the records in the event log is loaded to a list control (pardon me, i am not familiar with vc jargon) and from the list control its saved to a specific format. That is log entries are not directly exported?

C++beginer

Re: Event Viewer

Blake Miller6-Jun-06 5:16

Blake Miller

6-Jun-06 5:16

There is an already existing API to read the even log records. You can use that API to read the event log records and export them into whatever data format is of your choosing. See OpenEventLog and ReadEventLog for starters.

I've seen better runs in my shorts! - Patches O'Houlihan

Significance of MFC/.NET

Nattack4-Jun-06 18:18

Nattack

4-Jun-06 18:18

ahoy! I'm rather new to OOP and C++ programming in general, though i know some basics (keywords, some bits about classes, include files, and pointers)

recently ive begun to notice that C++ isnt just C++, but there seems to be different types of C++.

MFC for example, what is it? why is it so significant? is it just a library?
.NET, same question.

why would i want to use them to build my simple projects?

as of yet i'm only learning C++ for fun, though i may persue a career in programming in the near future (given post-secondary results) Smile | :)

any help to understand the concepts/point of MFC and .NET would be greatly appreciated. until then i just dont see why :/ what do they do? how do you use them? will any random compiler work with .net/mfc? are .net/mfc the same types of things?

I got a major case of brainsplode the other day trying to understand on my own. it doesnt work out ._.

_AnsHUMAN_ 4-Jun-06 19:28

_AnsHUMAN_

4-Jun-06 19:28

Hi,
MFC is an application framework for writing Microsoft C/C++ and Visual C++ applications.
It increases the ease of use and definitely the speed with which an application is developed because you don't need to start from scratch each time.

If you have an application where you have to draw a window and just add a few buttons with background images and then perform some other complex GDI operations it would become tedious and will take some time. By using classes in MFC you can do it very easily and that's the whole point.
(event handlers etc (HANDCODED) Wink | ;-)

just to make things sound complicated)

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

-- modified at 1:33 Monday 5th June, 2006

Tara144-Jun-06 22:05

4-Jun-06 22:05

Thats right. MFC makes life really simple and fun too.

I too learnt VC++ on my own. And I knew only C before I started.

If you are really interested in learning, I suggest you buy a good book (there are plenty out there) and start from page 1... and keep at it. Once the initial barrier is broken, it becomes a smooth ride.

All the best.

Fortitudine Vinsinues!
(By endurance we conquer.)

_AnsHUMAN_ 4-Jun-06 22:12

_AnsHUMAN_

4-Jun-06 22:12

Is it a suggestion for me?
Thanks for this one . I thought I didn't need this.

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Tara144-Jun-06 22:16

Re: Help Needed! [modified]

4-Jun-06 22:16

oops! Sorry. I guess I pressed the wrong 'reply' button. Blush | :O

Tara

Fortitudine Vinsinues!
(By endurance we conquer)

Help Needed!

fury 844-Jun-06 17:00

fury 84

4-Jun-06 17:00

I am working on a win32 program that requires users to create user names with passwords and log in. I assume that I need to create a file with user information and then read from it when the user tries to log in but have no idea how to go about doing so. Any help would be much appreciated. Thanks.

-Matt

bob169724-Jun-06 17:21

bob16972

4-Jun-06 17:21

fury 84 wrote:
I assume that I need to create a file with user information and then read from it when the user tries to log in

That would be a bad assumption. It'd probably be better to assume that they'd probably want to type their credentials into a login dialog box.

-- modified at 23:25 Sunday 4th June, 2006

Using windows authentication that is. "Programming Server-Side Applications for Microsoft Windows 2000"
by Jeffrey Richter, Jason D. Clark

Christian Graus4-Jun-06 18:05

Christian Graus

4-Jun-06 18:05

The core problem is, how do you hide this info so that someone can't just read it from your file system ? One potential way is to apply the MD5 hash to the password, and store the result, then do the same when checking the password. This is not foolproof, but it's far better than storing username/password pairs as plain text.

Christian Graus - Microsoft MVP - C++

ThatsAlok4-Jun-06 18:48

ThatsAlok

4-Jun-06 18:48

fury 84 wrote:
I am working on a win32 program that requires users to create user names with passwords and log in. I assume that I need to create a file with user information and then read from it when the user tries to log in but have no idea how to go about doing so. Any help would be much appreciated. Thanks.

Simplest Way to do so, is by using INI files! i.e. INI file is based on section, key and data, though it provide absolute security to your application, but for beginner level it will be easy go

try to create you INI structure some thing like this

 [USERS]
  // based on number of user there will be USERn section (n is no of user)
 noofuser=2 
  
 [USER1]
 username=alok
 password=alok
 [USER2]
 username=fury
 password=fury

using this structure you can easily add user to your Application, without modifying application. here is list of ini wrapper class
http://www.codeproject.com/cpp/CIni.asp[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

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

Tara145-Jun-06 1:44

5-Jun-06 1:44

Hi,

Please can you tell me how INI file provides security. I mean, if you right-click on an ini file and select 'open with notepad' , it open and shows all the contents. So, how can it be used to save usernames and passwords.

Is there any other way? How do all those huge multi-user application securely store passwords?

Thanks.

Tara

Fortitudine Vinsinues!

ThatsAlok5-Jun-06 1:48

ThatsAlok

5-Jun-06 1:48

TheinstruTara wrote:
ou tell me how INI file provides security

Sorry i misquoted in my sentence, i want to say it doesn't provide Absolute Security but it is good for beginning

TheinstruTara wrote:
Is there any other way? How do all those huge multi-user application securely store passwords?

actaully even Highly secure application store there information inthese file only , but they encrypt the data so no body able to read that. even Windows store there data in SAM files!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

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

Tara145-Jun-06 1:55

5-Jun-06 1:55

Encrypt....like...for example I write some code to convert the actual password to some normally un-understandable stuff and then store it.

Is that right? Is that one way of doing it?

Tara

Fortitudine Vinsinues!