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Rajesh R Subramanian wrote:
Redirecting an arbitrary Console's Input/Output[^]
dear rajesh,
this seems to be a perfect source match for my type of requirement.
today iam planning to integrate this feature into my app.
but i found it in vs 2008. i have to use it in vc 6.0.
i will try it and come here if iam facing any problems.
many more thanks again.
--------------------------------------------
Suggestion to the members:
Please prefix your main thread subject with [SOLVED] if it is solved.
thanks.
chandu.
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You can hide the console if you use CreateProcess by setting the STARTF_USESHOWWINDOW flag and SW_HIDE in the wShowwindow members of the STARTUPINFO parameter. By I don't think you can run an internal DOS command using CreateProcess.
«_Superman_»
I love work. It gives me something to do between weekends.
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«_Superman_» wrote: You can hide the console if you use CreateProcess by setting the STARTF_USESHOWWINDOW flag and SW_HIDE in the wShowwindow members of the STARTUPINFO parameter
oh thank you. i will try it now.
--------------------------------------------
Suggestion to the members:
Please prefix your main thread subject with [SOLVED] if it is solved.
thanks.
chandu.
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iam still unable to achieve it.
the return value of CreateProcess is 0.
can you please give some clues?
thank you.
--------------------------------------------
Suggestion to the members:
Please prefix your main thread subject with [SOLVED] if it is solved.
thanks.
chandu.
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I often use ShellExecuteEx (look it up to know what libraries to link.) This wraps CreateProcess in an easier to use form. I've cut and paste a modified version here.)
To execute a copy; pass "cmd.exe" as the app and "/c command" as the args. Set pDir to the dir where you want the operation to take place. Pass false for show. (The /c tells cmd.exe to execute the command and then exit.)
bool Execute(LPCTSTR pApp, LPCTSTR pArgs, bool show, LPCTSTR pDir)
{
if (!pApp)
{
SetLastError(ERROR_FILE_NOT_FOUND);
return false;
}
SHELLEXECUTEINFO execInfo;
memset(&execInfo, 0, sizeof(execInfo));
execInfo.cbSize = sizeof(execInfo);
execInfo.fMask = SEE_MASK_NOCLOSEPROCESS | SEE_MASK_FLAG_NO_UI;
execInfo.lpFile = pApp;
execInfo.lpParameters = pArgs;
execInfo.nShow = show ? SW_SHOW : SW_HIDE;
char path[MAX_PATH];
if (pDir)
{
execInfo.lpDirectory = pDir;
}
else
{
lstrcpyn(path, pApp, MAX_PATH);
if (PathRemoveFileSpec(path))
{
if (path[0])
execInfo.lpDirectory = path;
}
}
if (execInfo.lpDirectory && !DTDirExists(execInfo.lpDirectory))
{
SetLastError(ERROR_PATH_NOT_FOUND);
return false;
}
if (!ShellExecuteEx(&execInfo))
return false;
if (execInfo.hProcess)
CloseHandle(execInfo.hProcess);
return true;
}
modified on Tuesday, August 4, 2009 11:15 AM
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thank you,
i would try your logic also.
thanks again.
--------------------------------------------
Suggestion to the members:
Please prefix your main thread subject with [SOLVED] if it is solved.
thanks.
chandu.
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Why does the statement:
printf("This is Raza. \r Who are you? ");
gives the following output.
Who are you?
What effect does the carriage return makes on the text to be printed out?
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i think ,
carriage return(\r) brings the control to the 1st column and linefeed (\n) takes it to the new line.
so u should use \r\n
--------------------------------------------
Suggestion to the members:
Please prefix your main thread subject with [SOLVED] if it is solved.
thanks.
chandu.
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Add a new line to it.
printf("This is Raza. \r\n Who are you? ");
«_Superman_»
I love work. It gives me something to do between weekends.
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Someone has down-voted you both. I balanced it... Probably you were suggesting \r\n, while it should have been \n ? 
It is a crappy thing, but it's life -^ Carlo Pallini
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thank you.
but, AFAIK, while using normal printf, \r\n and \n does the same. but for some consoles like(hyperterminal for example) what i have observed is
using only \n gives the output somehting like
hello
.....world
so i felt using both would be a standard way.
--------------------------------------------
Suggestion to the members:
Please prefix your main thread subject with [SOLVED] if it is solved.
thanks.
chandu.
modified on Monday, June 29, 2009 7:41 AM
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\r brings the carriage back to the beginning of the current line (without inserting a line feed) and that erases the existing text. To understand what I mean, try this:
printf("ABCDEFGHIJ \r");
To solve this, use \n instead of \r.
\n will insert a line feed and will return to the beginning of the newly inserted line.
It is a crappy thing, but it's life -^ Carlo Pallini
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Hallo, i have the following function in SDI-application:
void CMyClass::Myfunction()
{
CString strOutput;
LPMSG *pmsg = NULL;
for(int i = 0; i < 3000; i++)
{
::PeekMessage(NULL,NULL,0,0,PM_NOYIELD | PM_REMOVE);
strOutput.Format ("%d",i);
m_ptrOutput->SetWindowTextA (strOutput);
}
}
as you see the for-loop goes 3000 times and should print the value of i, what happens when this function starts
is the appliction FREEZ. I do not have any idea why this happens and how to solve this problem.Please help.
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What is that magic number 3000?
Why do you want to loop 3000 times?
«_Superman_»
I love work. It gives me something to do between weekends.
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loop 3000 to get the rows from a database :
select * from DB;
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susanne1 wrote: LPMSG *pmsg = NULL;
What is the purpose of this pointer variable? You aren't using it anywhere in your code. Not to mention LPMSG is already a pointer to a MSG structure. 
void Func()
{
CString szOutput;
MSG msg;
for(int i=0; i<3000; i++)
{
PeekMessage(&msg, NULL, 0, 0, PM_REMOVE);
szOutput.Format(_T("%d"), i);
OutputDebugString(szOutput);
}
Why would you do something like this? Are you trying to understand how PeekMessage works or ... ?
It is a crappy thing, but it's life -^ Carlo Pallini
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i must do it because i have over 40000 rows in the database(wher can i find a tutorial that explain how peekmessgae works??)
do not i need to intialize the msg before i use it?
i used the PeekMessage(&msg, NULL, 0, 0, PM_REMOVE);in the loop that retrives the rows but nothing changed positively??
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You actually are in need of a good book. For book recommendations, see here[^].
Here[^] is a good tutorial on threading. But, that can hardly help you if you don't get a good grip of the basics at first.
It is a crappy thing, but it's life -^ Carlo Pallini
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okay thanks but for now how can i solve this problem?
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You cannot solve this problem until you understand the basics. If I start to tell why you should not use PeekMessage there, I'll have to explain what a worker thread is, thread synchronization, applying everything together in your program, etc., Too much of stuff to be discussed in a thread like this. You are desperately in need of a book and go buy one or two. Your program can wait until you're good enough to solve it.
And no pal, I do not feel like providing you a quick-fix. Sorry about that.
It is a crappy thing, but it's life -^ Carlo Pallini
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You should sometimes (e.g. after reading of 100 data) call a function like this.
If you remove the message from the queue, you should dispatch the message. You can call PeekMessage with other filters too (e.g. for a special window or other messages). But the last call should not use any filters!
void PeekMessages()
{
MSG msg;
// check for paint-messages ...
while ( PeekMessage(&msg, NULL, WM_PAINT, WM_PAINT, PM_REMOVE) )
{ // ... and dispatch these
TranslateMessage(&msg);
DispatchMessage(&msg);
}
// only to prevent ghost-window on vista!
// we dont use the result and let the message
// in the queue (PM_NOREMOVE)
PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE);
}
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Hallo,
I need to start a timer like the following to measure the time that my appliction requires to do someting:
void CMiniClass :: DoSomething()
{
theApp.m_pMainWnd ->SetTimer (MY_TIMER,1000,NULL);
while (i > 0)
{
DoStuff();
}
//theApp.m_pMainWnd ->KillTimer (MY_TIMER);
}
in the CMainFrame.cpp i overrode the OnTimer() from the baseclass:
void CMainFrame::OnTimer(UINT nIDEvent)
{
m_bFlagStartTimer = true;
CFrameWnd::OnTimer(nIDEvent);
CString strTimer(_T(""));
m_nSeconds++;
if(m_nSeconds == 60)
{
m_nMinutes++;
m_nSeconds = 0;
}
if(m_nMinutes == 60)
{
m_nHours++;
m_nMinutes = 0;
}
if(m_nHours == 24)
{
m_nHours = 0;
}
strTimer.Format("%d:%d:%d", m_nHours, m_nMinutes, m_nSeconds);
MessageBox(strTimer,0,0);
}
the problem is the application starts the Timer(in the Messagebox) after he finished the while-loop,so i can not know how long
my appliction was BUSY with this loop, and if i activate theApp.m_pMainWnd ->KillTimer (MY_TIMER);
the Timer would be KILLED and then the while-llop starts, i need to do this without using Thread.
Please help to fix this problem. Thanks.
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You shouldn't be using a timer here.
You should ideally get the time first, start your job, get the time again after you're job completes and then compare the first and second time.
«_Superman_»
I love work. It gives me something to do between weekends.
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i used this code but the problem it starts first when the appliction has finished the job.
CFrameWnd::OnTimer(nIDEvent);
CTime timer;
CString strTimer (_T(""));
timer = CTime::GetCurrentTime ();
if(((m_nSeconds = timer.GetSecond ()) == 0) && (m_bFlagTimer == true))
{
m_nMinutes++;
}
if(((timer.GetMinute ()) == 0) && (m_bFlagTimer == true))
{
m_nHours++;
}
wsprintf((LPTSTR)strTimer.GetString (),"%02i:%02i:%02i",m_nHours, m_nMinutes, m_nSeconds);
m_wndStatusBar.SetPaneText(5,LPCSTR(strTimer.GetString ()),true
i need to count parallel to the task when it runs.
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