C / C++ / MFC

Re: How to do the MFC to get the return of another console program?

10-Aug-11 5:26

Are you using CreateProcess() or ShellExecute() to start download.exe?

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adalcol10-Aug-11 6:34

Re: How to do the MFC to get the return of another console program?

10-Aug-11 6:34

I didnt. I have been using

CreateProcess(
NULL
"cmd /C download.exe"
NULL, // Process handle not inheritable.
NULL, // Thread handle not inheritable.
FALSE, // Set handle inheritance to FALSE.
0, // No creation flags.
NULL, // Use parent's environment block.
NULL, // Use parent's starting directory.
&si, // Pointer to STARTUPINFO structure.
&pi ); // Pointer to PROCESS_INFORMATION structure.

David Crow10-Aug-11 8:00

Re: How to do the MFC to get the return of another console program?

10-Aug-11 8:00

You can look at the hProcess member of pi and call GetExitCodeProcess().

adalcol10-Aug-11 8:25

Re: How to do the MFC to get the return of another console program?

10-Aug-11 8:25

ok, perfect I have been using this, but I can't getting the return of download.exe /v. I still didn't find the member to do get this return... The member GetExitCodeProcess() return to me if the state of command, but I need the return of executable and not your state.

Example in line prompt, I need to get the '1.00'.

c:\download.exe /v
1.00
c:\

David Crow10-Aug-11 8:29

Re: How to do the MFC to get the return of another console program?

10-Aug-11 8:29

Is download.exe a console application? If so, its main() function will be returning an int (i.e., 1). That value is available from GetExitCodeProcess().

adalcol10-Aug-11 8:44

Re: How to do the MFC to get the return of another console program?

10-Aug-11 8:44

Now, I understood.

I returned in the main the value of version (version * 1000). And I can to do the MFC to get it with GetExitCodeProcess() and converting the version (version / 1000) to double value.

I forgot that main return int value and I didnt understand that GetExitCodeProcess to get this.

Thanks to explain this.
André

Chuck O'Toole10-Aug-11 7:06

Re: How to do the MFC to get the return of another console program?

10-Aug-11 7:06

int SynchronizedThread::RunCommand(CString Command, bool WaitForIt)
{
	PROCESS_INFORMATION ProcInfo;
	STARTUPINFO StartInfo;
	DWORD exit_status;
	
	memset(&StartInfo, 0, sizeof(StartInfo));
	StartInfo.cb = sizeof(StartInfo);
	if (CreateProcess(NULL, (LPSTR)(LPCTSTR)Command, NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &StartInfo,  &ProcInfo))
	{
		if (WaitForIt)
		{
			WaitForSingleObject(ProcInfo.hProcess, INFINITE);	// wait for the command to finish
			GetExitCodeProcess(ProcInfo.hProcess, &exit_status);
			CloseHandle(ProcInfo.hProcess);
			CloseHandle(ProcInfo.hThread);
		}
		else
			exit_status = EXIT_SUCCESS;
		return exit_status;
	}
	return EXIT_FAILURE;
}

adalcol10-Aug-11 8:30

Re: How to do the MFC to get the return of another console program?

10-Aug-11 8:30

I dont need monitor the thread, I need to know how get the return of line command of executable.

Example... my program of MFC needs to get this '1.00'

prompt (line command)
c:\download.exe /v
1.00
c:\

Do you know to get it?

Chuck O'Toole10-Aug-11 8:36

Re: How to do the MFC to get the return of another console program?

10-Aug-11 8:36

Of course you need to monitor the thread, the exit code isn't available until the program exits and how do you know when that happens unless you monitor the thread?

You don't have to sit and wait until it's done, you can periodically check the state of the thread (wait with a short timeout or other "test" conditions for the state of the handle) and then you'll know the exit code is valid.

Also, it's better to have the command line be "Download.exe /v" (whatever /v means to your program) than to have a .BAT file run the command. This way you'll be sure to get the exit code of the application.

adalcol10-Aug-11 8:50

Changing the parameters passed to an applicaiton in a Mini filter?

10-Aug-11 8:50

Sorry, I forgot the console application, the main return an int;

Now, I understood the GetExitCodeProcess() getting the int main.

Thanks
André.

Erudite_Eric10-Aug-11 2:31

Erudite_Eric

10-Aug-11 2:31

Minifilters get passed a PFLT_CALLBACK_DATA and a PCFLT_RELATED_OBJECTS when called by the system.

Does anyone know of a way to change, or add, parameters to the application being run?

==============================

Nothing to say.

Is there any function that can convert text representation"ABCDEF" back to int ?

Cold_Fearing_Bird9-Aug-11 22:23

Cold_Fearing_Bird

9-Aug-11 22:23

_itoa can convert int value such as 15 to F, but the atoi function cannot convert it back. it simply treat any letter that is not numerical( '0' - '9' ) as wrong input value.
I have an edit control to display something hexadecimal, say a pointer, a handle,so I do the follow,
_itoa( i, szBuffer, 16 ) ;
SetDlgItemText( hDlg,szBuffer ) ;
when I want the value back, I need to convert it back to int representation. But I am stuck here.
Does someone know any function that fix my problem?

Re: Is there any function that can convert text representation"ABCDEF" back to int ?

Richard MacCutchan9-Aug-11 23:19

Richard MacCutchan

9-Aug-11 23:19

Try one of these functions[^], which allow you to specify the number base.

Unrequited desire is character building. OriginalGriff

Re: Is there any function that can convert text representation"ABCDEF" back to int ?

JohnNawrocki23-Aug-11 7:04

JohnNawrocki

23-Aug-11 7:04

I assume you are talking about converting character hexadecimal representation to an integer. Look at: http://www.dreamincode.net/code/snippet805.htm[^]

John Nawrocki
Chief Technical Advisor
Custom Molded Products

Debug Assertion Error help, here is the exact error [solved]

AndrewG12319-Aug-11 9:52

Re: Debug Assertion Error help, here is the exact error

9-Aug-11 9:52

I keep getting this error from my program when I try to debug it.

Program: C:\Users\Jeffrey\Desktop\WinSTM\.\Debug\WinSTM.exe

File: f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\filelist.cpp Line:225

It is referring to this piece of code:

ENSURE(SUCCEEDED(hr));

	Add(psi, strAppID);
#endif

Can anyone help tell me what this is referring to so that I can fix it?

solved here:Debug Assertion Error Visual Studio 2010[^]

modified on Thursday, August 25, 2011 3:47 PM

David Crow9-Aug-11 10:23

Re: Debug Assertion Error help, here is the exact error

9-Aug-11 10:23

AndrewG1231 wrote:
Can anyone help tell me what this is referring to so that I can fix it?

The ENSURE() macro expands to a macro named ENSURE_THROW(). That macro is the one that actually contains the assertion. You might look in afx.h around line 369 (I don't have VS2010) to see what condition is actually asserting.

Richard Andrew x649-Aug-11 13:14

Richard Andrew x64

9-Aug-11 13:14

I think Code-o-Mat is on to something in his response to your previous thread below.

Change this:

C++

if (m_Bitmap != 0)
    DeleteObject(m_Bitmap);

To this:

C++

if (m_Bitmap != 0)
    {
    DeleteObject(m_Bitmap);
            m_Bitmap = NULL;
    }

Compile it, and see if the error occurs again.

The difficult we do right away...
...the impossible takes slightly longer.

Re: Debug Assertion Error help, here is the exact error

AndrewG12319-Aug-11 13:24

Re: Debug Assertion Error help, here is the exact error

9-Aug-11 13:24

Yes, I have made this change and the error persists.

Code-o-mat10-Aug-11 0:23

Code-o-mat

10-Aug-11 0:23

Thanks.

Too bad it didn't solve the main problem, but nevertheless it was probably not working correctly.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> If it doesn't matter, it's antimatter.<

Re: Debug Assertion Error help, here is the exact error

Chuck O'Toole9-Aug-11 14:23

Re: Debug Assertion Error help, here is the exact error

9-Aug-11 14:23

The ENSURE and SUCCEEDED macros are quite commonly used to throw a debug assertion failure when some API call returns "false" or "failed" or whatever.

"hr" is the interesting variable being checked and is a common name for "handle for a resource".

If you found the "ENSURE" statement, the really interesting part is above it, where the value of "hr" was set to something the "ENSURE" statement is unhappy with. Look at that.

When you hit the assertion failure and enter the debugger, follow the call stack backwards (down in the listing) until you find something that's in your own code and double click on that, it will take you to your call that called the API that had the argument it was unhappy with. Follow that procedure over and over until you find the call that really messed up the argument.

Remember this process as it will help you over and over again as you run into problems in the future. There is no substitute for learning a good debugging procedure and how to use the debugging tools in your compiler.

AndrewG12319-Aug-11 16:38

Re: Debug Assertion Error help, here is the exact error

9-Aug-11 16:38

Yes, the hr value is E_INVALIDARG....will this indicate a bad pointer value?

Chuck O'Toole9-Aug-11 16:46

Re: Debug Assertion Error help, here is the exact error

9-Aug-11 16:46

You need to first find the call that fails. Then lookup that function to see why it would return "E_INVALIDARG". For example, if the function want's a handle, E_INVALIDARG might indicate an invalid handle. If it wants a pointer, maybe NULL would cause E_INVALIDARG.

There's no way, without knowing what API function is returning the error, to guess what would cause E_INVALIDARG. Now that you know what the error is, you should do a little research to figure it out.

Here's a suggestion. Now that you know where the error occurs, not the "ENSURE" call but the API call that return "hr" as "E_INVALIDARG", set a breakpoing *before* executing the API and look at the arguments you are passing. Compare them to what the documentation for the function says.

Debugging something you didn't write can be a challange but a little common sense can help unwind the reasons and might help you understand what the code is trying to do.

AndrewG123110-Aug-11 9:39