Re: Problem calling .exe from a dll - C / C++ / MFC Discussion Boards

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Re: Problem importing mso97.dll

Jamie Nordmeyer2-Jul-01 12:35

Jamie Nordmeyer

2-Jul-01 12:35

OK, I noticed another thing. The GUID for DocumentProperties, as well as the DocumentProperties name itself, do not exist anywhere in my registry.

Jamie Nordmeyer
Portland, Oregon, USA

Re: Problem importing mso97.dll

Bret Faller3-Jul-01 8:47

Bret Faller

3-Jul-01 8:47

Try specifying that you only want the interfaces and not all the extra junk. In VC++ it looks like this: #import "mso97.dll" raw_interfaces_only
I'm not sure how to do it in VB as I am strictly VC++.

Bret Faller
Odyssey Computing, Inc.

Dynamic query ...

Hadi Rezaee2-Jul-01 8:32

Hadi Rezaee

2-Jul-01 8:32

Hi all,
I want to know, can i make a report by Crystal Report 7.0 with deafult SQL query, that i'll can change the query in my program(run-time changing ...) ???

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Re: Dynamic query ...

Carlos Antollini2-Jul-01 15:20

Carlos Antollini

2-Jul-01 15:20

No...
Because the Crystal Report, take the fields from the General Query.
You can change the value of the parameter but not the query.
But you can make a Stored procedure that always returns the same fields, but this stored can make diferents querys depending the parameters, for example.

Good Luck!!!
Smile | :)

Carlos Antollini.

Re: Dynamic query ...

Hadi Rezaee2-Jul-01 17:10

Hadi Rezaee

2-Jul-01 17:10

Hi Carlos,
Yesterday, my friend said to me: "you can use of this: crystalreport1.sqlquery = "SELECT * FROM T1""
Of course, it is in VB ..
I want to know can i use of it in VC++ ?

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Problem calling .exe from a dll

2-Jul-01 7:23

I am trying to start an exe app from a dll. I've used both WinExec(..) and CreateProcess(..) with no results. Is it at all possible to call an exe from a dll and if so, is there another way to do this? Please help me Rose | [Rose]

Junior

Re: Problem calling .exe from a dll

2-Jul-01 9:10

Try the spawnxx famaily of calls
_spawnvp(_P_WAIT, tool, argv);
refer msdn.microsoft.com for exact desc.

Re: Problem calling .exe from a dll

#realJSOP3-Jul-01 5:35

#realJSOP

3-Jul-01 5:35

CreateProcess should work, even from within a DLL. All you have to do is wait for the DLL's initialization process to finish before calling CreateProcess.

I'm willing to bet that you're setting the first parameter to the path\filename of the program you're running, too. Try combining the path\filename with your commandline parameters (if any) and pass the whole shooting match as the *2nd* parameter (make the 1st parameter NULL). Also, if you're using a CString to build the commandline, cast it to an LPCTSTR like so:

CString sMyCmdLine = "C:\myfolder\myprogram.exe /param1 /param2";
CreateProcess(NULL, (LPCTSTR)sMyCmdLine,....);

COM crashing

Chris Klecker2-Jul-01 7:03

Chris Klecker

2-Jul-01 7:03

I had an eariler issue dealing with DAO access causing a program to crash. Apparently installing MDAC and DAOSDK solves that issue. (thanks to those who helped on this matter Smile | :)

) However now I am noticing a problem with COM, more specifically MSFLEXGRID. I have a MSFLEXGRID control in the program and I am noticing that within the main window it is not showing up and within a dialog box it is causing the program to crash long before it paints.

Are there more installs that need to happen?

I noticed this all worked when I had VC++ installed.

Thanks!

Chris

"Why are we hiding from the police, Daddy?"
"We use VI, son. They use Emacs."

ADO

Gérald Mercet2-Jul-01 6:41

Gérald Mercet

2-Jul-01 6:41

I would like to use ADO to keep database record in excel sheet. But I don't know how to do that. And the second step of my problem is of being able to compare value in the database to one given in a dialog box. In fact I'm building an automation which need to catch good value into a database according to a parameter given in my dialog box.

So if anybody could help me....

thanks

gerald

Re: ADO

Carlos Antollini2-Jul-01 6:58

Carlos Antollini

2-Jul-01 6:58

Througth a Excel ODBC Driver!!!
Good Luck!!
Smile | :)

Carlos Antollini.

binding member variables

2-Jul-01 5:13

if i create a control programatically (after deriving from cedit or whatever), how can I make it appear in classwizard so I can then bind messages to it...?

Re: binding member variables

3-Jul-01 5:29

You can't. However, you can use the DDV_ and DDX_ methods directly.
If you already know the ID's of the contorls, why would you wan't to create them programatically???

Return variable

Giuseppe Vitali2-Jul-01 0:19

Giuseppe Vitali

2-Jul-01 0:19

Excuse me for the language... but I'm an italian guy!
I'm learning C++... and I found this code to have the IP address of my client:

int IPAddress()
{
WSADATA wsa;
WSAStartup(MAKEWORD(1, 0), &wsa);
char* szBuffer = new char[250];
TCHAR *lpIPAddr = new TCHAR[250];
if(gethostname(szBuffer, 250) != 0)
return 0;
struct hostent * host = gethostbyname(szBuffer);

wsprintf(lpIPAddr, "IP Locale: %d.%d.%d.%d\n",
(BYTE)host->h_addr_list[0][0],
(BYTE)host->h_addr_list[0][1],
(BYTE)host->h_addr_list[0][2],
(BYTE)host->h_addr_list[0][3]);

return *lpIPAddr;
}

How can I use this code like a function? How can I insert this code in a Dialog that show IP Address? When I call it... what return it to me?

Thanks...

Re: Return variable

Anders Molin2-Jul-01 4:49

Anders Molin

2-Jul-01 4:49

I made a couple of small changes, and now it works.

TCHAR* IPAddress()
{
  WSADATA wsa;
  WSAStartup(MAKEWORD(1, 0), &wsa);
  char szBuffer[250];
  TCHAR *lpIPAddr = new TCHAR[18];
  memset(lpIPAddr, '\0', 18 * sizeof(TCHAR));
  if(gethostname(szBuffer, 250) != 0)
  return 0;
  struct hostent * host = gethostbyname(szBuffer);
  _stprintf(lpIPAddr, "IP Locale: %d.%d.%d.%d\n",
  (BYTE)host->h_addr_list[0][0],
  (BYTE)host->h_addr_list[0][1],
  (BYTE)host->h_addr_list[0][2],
  (BYTE)host->h_addr_list[0][3]);
  return lpIPAddr;
}

- Anders

Money talks, but all mine ever says is "Goodbye!"

Re: Return variable

Giuseppe Vitali2-Jul-01 5:54

Giuseppe Vitali

2-Jul-01 5:54

Anders... Thanks, thanks, thanks!!!

Re: Return variable

Mukkie2-Jul-01 8:19

Mukkie

2-Jul-01 8:19

Fine, but remember to close WSA and deallocate memory allocated with operator new ( TCHAR *lpIPAddr = new TCHAR[18]; ). You should first initialize WSA, then create buffer, and lastly send it to the IPAdress function as an argument.

xml validator

1-Jul-01 23:55

do you know any free sw to what when i give by me created xml file will say it is good/wrong formated one?
i afraid when i will use any-firma parser it can bring problem
(search at www.xml.org asks me i want to debug y/n)
t!

Re: xml validator

markkuk2-Jul-01 0:46

markkuk

2-Jul-01 0:46

The sample programs of Xerces XML parser can be used as XML validators. It's available from xml.apache.org.

Template Question

1-Jul-01 23:47

Hi everybody.

I have the following question. Is it possible to get behavour like this from templates.

template < typename T >
class TType
{
public:
CString GetAsString( )
{
CString sValue;

sValue.Format( GetFormat<t>( ), m_tValue );

return sValue;
}

protected:
T m_tValue;
};

Define some function that depended of the type will return different string for formating.

template < class int >
CString GetFormat( )
{
return "%d";
}

template < class float >
CString GetFormat( )
{
return "%.4f";
}

and then when this is used
TType< int > a; // will use template function for int

TType< float > a; // will use template function for float

Re: Template Question

Martin Vladic2-Jul-01 0:26

Martin Vladic

2-Jul-01 0:26

It is invalid C++. Your idea written correctly looks like this:

template <typename t="">
class TType
{
public:
CString GetAsString()
{
CString sValue;
sValue.Format(GetFormat<t>(), m_tValue);
return sValue;
}
protected:
T m_tValue;
};

template <class t=""> CString GetFormat();
template <> CString GetFormat<int>() { return "%d"; }
template <> CString GetFormat<float>() { return "%.4f"; }

Unfortunately, this doesn't work on VC++ 6.0 (GetFormat<int> is called even for float's).

Try this:

template <typename t="">
class TType
{
public:
TType(const T& value)
: m_tValue(value)
{
}

CString GetAsString()
{
CString sValue;
sValue.Format(TypeHelper<t>::GetFormat(), m_tValue);
return sValue;
}

protected:
T m_tValue;
};

template <class t=""> class TypeHelper;

template <> class TypeHelper<int>
{
public:
static CString GetFormat() { return "%d"; }
};

template <> class TypeHelper<float>
{
public:
static CString GetFormat() { return "%.4f"; }
};

--
Martin

Re: Template Question

2-Jul-01 0:41

Are you sure that this will work ?

Re: Template Question

Martin Vladic2-Jul-01 23:30

Martin Vladic

2-Jul-01 23:30

Hm, it seems that discussion boards software stripped some chars from my post. For example, in template specialization definition:

template <> class TypeHelper<int>

, it stripped "<int>" after class name.

Please send me request email, and I will send you correct version of my post.

Regards

--
Martin

Re: Template Question

Martin Vladic2-Jul-01 23:44

Martin Vladic

2-Jul-01 23:44

I found out why some chars was stripped from my message and how to send it correctly. So, here it is, again:

It is invalid C++. Your idea written correctly looks like this:

template
class TType
{
public:
CString GetAsString()
{
CString sValue;
sValue.Format(GetFormat(), m_tValue);
return sValue;
}
protected:
T m_tValue;
};

template <class T> CString GetFormat();
template <> CString GetFormat<int>() { return "%d"; }
template <> CString GetFormat<float>() { return "%.4f"; }

Unfortunately, this doesn't work on VC++ 6.0 (GetFormat<int> is called even for float's).

Try this:

template <class T>
class TType
{
public:
TType(const T& value)
: m_tValue(value)
{
}

CString GetAsString()
{
CString sValue;
sValue.Format(TypeHelper::GetFormat(), m_tValue);
return sValue;
}

protected:
T m_tValue;
};

template <class T> class TypeHelper;

template <> class TypeHelper<int>
{
public:
static CString GetFormat() { return "%d"; }
};

template <> class TypeHelper<float>
{
public:
static CString GetFormat() { return "%.4f"; }
};

--
Martin

Re: Template Question

Tomasz Sowinski2-Jul-01 1:12

Tomasz Sowinski

2-Jul-01 1:12

You need to create a GetFormat function template and specializations for different types. VC++ seems to have problems with some forms of specializations. I was able to make the following code work:

// in TType template
CString GetAsString()
{
CString sValue;
sValue.Format( GetFormat(m_tValue), m_tValue );
return sValue;
}

// without this specializations won't compile on VC 6
template < class T >
CString GetFormat(const T& unused)
{
return CString();
}

template < >
CString GetFormat(const float & unused)
{
	return "%.4e";
}

template < >
CString GetFormat(const int & unused)
{
	return "%d";
}

Tomasz Sowinski -- http://www.shooltz.com.pl

Last Visit: 31-Dec-99 18:00 Last Update: 4-Jun-24 18:56

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