C / C++ / MFC Discussion Boards

Anonymous26-May-03 7:08

26-May-03 7:08

Is there any sample algorithm(Mathematical Equations)links for taking a serial number and generating a unique number used for software protection.

Thanks

Re: Algorithm

John R. Shaw26-May-03 9:19

John R. Shaw

26-May-03 9:19

I recommend you go search http://sourceforge.net/

Trust in the code Luke. Yea right!

Re: Algorithm

John R. Shaw26-May-03 9:22

John R. Shaw

26-May-03 9:22

I recommend you search http://sourceforge.net

Trust in the code Luke. Yea right!

small application

centrum26-May-03 5:02

centrum

26-May-03 5:02

I am looking for source code for small(~15-20KB)highly customizable application, that capture keystrokes and save it into encrypted log file,

Centrum

Re: small application

Renjith Ramachandran26-May-03 6:33

Renjith Ramachandran

26-May-03 6:33

yeah.. i wrote one for my personal use.. i think i can publish that here..

[ It is possible to represent everything in this universe by using 0 and 1 ]

Can't debug if including 'vector'

ScorpioMidget26-May-03 4:45

ScorpioMidget

26-May-03 4:45

If i try to compile my mfc dialog application in DEBUG configuration with a '#include <vector> inside one of my cpp files or headers, i get the following error messages:

c:\program files\microsoft visual studio\vc98\include\new(35) : error C2061: syntax error : identifier 'THIS_FILE'
c:\program files\microsoft visual studio\vc98\include\new(35) : error C2091: function returns function
c:\program files\microsoft visual studio\vc98\include\new(35) : error C2809: 'operator new' has no formal parameters
c:\program files\microsoft visual studio\vc98\include\new(36) : error C2061: syntax error : identifier 'THIS_FILE'
c:\program files\microsoft visual studio\vc98\include\new(37) : error C2091: function returns function
c:\program files\microsoft visual studio\vc98\include\new(37) : error C2556: 'void *(__cdecl *__cdecl operator new(void))(unsigned int,const struct std::nothrow_t &)' : overloaded function differs only by return type from 'void *(__cdecl *__cdecl op
erator new(void))(unsigned int)'
c:\program files\microsoft visual studio\vc98\include\new(35) : see declaration of 'new'
c:\program files\microsoft visual studio\vc98\include\memory(16) : error C2061: syntax error : identifier 'THIS_FILE'
c:\program files\microsoft visual studio\vc98\include\memory(17) : error C2091: function returns function
c:\program files\microsoft visual studio\vc98\include\memory(17) : error C2784: 'void *(__cdecl *__cdecl operator new(void))(unsigned int,class std::allocator<`template-parameter257'> &)' : could not deduce template argument for 'void *(__cdecl *)(u
nsigned int,class std::allocator<_Ty> &)' from 'void *(__cdecl *)(unsigned int)'
c:\program files\microsoft visual studio\vc98\include\memory(17) : error C2785: 'void *(__cdecl *__cdecl operator new(void))(unsigned int,class std::allocator<`template-parameter257'> &)' and 'void *(__cdecl *__cdecl operator new(void))(unsigned int
)' have different return types
c:\program files\microsoft visual studio\vc98\include\memory(16) : see declaration of 'new'
c:\program files\microsoft visual studio\vc98\include\memory(17) : error C2809: 'operator new' has no formal parameters
c:\program files\microsoft visual studio\vc98\include\memory(20) : error C2954: template definitions cannot nest
Error executing cl.exe.
Creating browse info file...

I can't figure out why this happens or how to fix it.
BTW it compiles without the #include <vector> in DEBUG configuration. And it also compiles with/without it in RELEASE configuration.
I'm using VC++ 6

Hoping you can help Smile | :)

ScorpioMidget

Re: Can't debug if including 'vector'

Rage26-May-03 4:50

Rage

26-May-03 4:50

Put your include<vector> ~~AFTER~~ #include <stdafx.h>

[edit] I meant BEFORE. Does this happen to you sometimes ? I was thinking "BEFORE, not AFTER" and finally wrote AFTER Roll eyes | :rolleyes:

[/edit]

~RaGE();

Re: Can't debug if including 'vector'

ScorpioMidget26-May-03 4:52

ScorpioMidget

26-May-03 4:52

At last i got it 2 compile by putting #include <vector> above all mfc includes.

Is the right way to go when mixing STL with MFC ?

ScorpioMidget

Re: Can't debug if including 'vector'

Andrew Walker26-May-03 4:53

Andrew Walker

26-May-03 4:53

Move the vector header include above the debugging macro 'hack' that VC6 uses

#include <vector>
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

OS awareness

Themis26-May-03 4:28

Themis

26-May-03 4:28

Hello, is there any way that I know at run-time at what platform my application is running? A few things have to change in order for my application to run in both unix and windows. I think that I can do sth with #ifdef or sth like this. Can you help me out by giving some examples?

Thanks, Themis

Re: OS awareness

Rage26-May-03 4:40

Rage

26-May-03 4:40

#ifdef is a precompiler command. If you put your code like :

#ifdef WINDOWS

bla ...

#elsif UNIX

stuff...

#endif

then putting a #define WINDOWS at top of the file will compile only the code between WINDOWS "scope" (i.e. bla...), and #define UNIX will compile the "stuff...". But this is only at compilation time and you need something at run-time. On solution would be to compile two separate app, one for Unix, one for Windows. Second solution would be to ask the user about the OS when installing your app, store the result in the registry, and read the key at application start.

~RaGE();

Re: OS awareness

markkuk26-May-03 4:51

markkuk

26-May-03 4:51

The same executable file won't run under both Windows and Unix, so there must always be two separately compiled applications.

Re: OS awareness

Themis26-May-03 7:55

Themis

26-May-03 7:55

Hm, did I say run-time??? Well I wanted to say compile time, thank you for your help.

Themis

Re: OS awareness

markkuk26-May-03 4:48

markkuk

26-May-03 4:48

Most compilers have predefined macros specifying the OS used for compilation like __WIN32__ or __unix__

Re: OS awareness

Alvaro Mendez26-May-03 7:06

Alvaro Mendez

26-May-03 7:06

The ones I know of, predefined by the compiler (so you don't have to):

__unix<br />
_WIN32

Regards,
Alvaro

If you want to get to the top, prepare to kiss a lot of bottom. -- despair.com

Driving MS-Excel.

⁷³Zeppelin26-May-03 4:14

⁷³Zeppelin

26-May-03 4:14

Seems I'm full of questions today.

Is there and easy way to send data to and Excel worksheet
from an MFC application?
For example, if I have an open excel worksheet, can I send data
from a separate application to that worksheet with a small amount of
code/effort?
We're looking to automate a painful manual import of data into Excel.
Thanks.

Re: Driving MS-Excel.

Andrew Walker26-May-03 4:28

Andrew Walker

26-May-03 4:28

John Theal wrote:
Is there and easy way to send data to and Excel worksheet from an MFC application?

Use automation.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnautoma/html/msdn_thrdole.asp[^]

Re: Driving MS-Excel.

Rage26-May-03 4:30

Rage

26-May-03 4:30

John Theal wrote:
Is there and easy way to send data to and Excel worksheet
from an MFC application?
For example, if I have an open excel worksheet, can I send data
from a separate application to that worksheet with a small amount of
code/effort?

It depends of what you want to do. Just make a search on MSDN[^] with "HOWTO automation Excel", or have a look at Article ID: Q178749 and Article ID: Q178781 (in MSDN) and you will have a good start.

~RaGE();

Capturing of View

TDS26-May-03 4:02

TDS

26-May-03 4:02

We need to capture view, when a dialog box is being displayed. we are not getting the information of the view which is below the dialog box.
could anybody please help to solve this problem.
thanx.

Re: Capturing of View

Rage26-May-03 4:27

Rage

26-May-03 4:27

What is not working ? What did you try ? How is your code ? What is returned by GetActiveView() ?

~RaGE();

MFC document menu

Rowan Seymour26-May-03 4:00

Rowan Seymour

26-May-03 4:00

I'm coding an MFC MDI doc/view simple sound editor called Asaph.

There are 2 menu resources: the IDR_MAINFRAME one for when there are no open docs, and the IDR_ASAPHTYPE one used when a doc is open.
I want to be able to dynamically add menu items (using CMenu::InsertMenu()) for things like plugins, to the IDR_ASAPHTYPE menu.

Even tho the applicatiopn starts with a new blank doc, when CMainFrame::OnCreate() is called, GetMenu() still returns the CMenu created from IDR_MAINFRAME.

When is the doc menu loaded and how I can I access it to add the items ?

My only idea so far is to do it from the the document class in the first call to OnNewDocument() or OnOpenDocument() but that seems like a bit of a hack fix.

Cheers, Rowan

Getting version information from a resource

Trollslayer26-May-03 3:35

Trollslayer

26-May-03 3:35

In order to write registry keys etc., I want t use the details entered in the version part of a resource (such as CompanyName).
The question is, how do I read this ?
Thanks.

Elaine Rose | [Rose]

The tigress is here Big Grin | :-D

Re: Getting version information from a resource

Michael Dunn26-May-03 4:30

Michael Dunn

26-May-03 4:30

Here you go Smile | :)

// GetDllVersion - Returns version # in a string: "1.2.3.4"
// Reads the ProductVersion info block from the given file and returns it in sProductVersion.
// Return value is true/false for success/failure.
 
bool GetDllVersion ( LPTSTR szDllFilename, std::string& sProductVersion )
{
DWORD dwHandle, dwInfoSize;
BYTE* pBuffer;
void* pvVersion;
UINT  uBufLen;
 
    dwInfoSize = GetFileVersionInfoSize ( szDllFilename, &dwHandle );
 
    if ( 0 == dwInfoSize )
        return false;
 
    pBuffer = new BYTE [dwInfoSize];
 
    if ( NULL == pBuffer )
        return false;
 
__try
    {
    if ( 0 == GetFileVersionInfo ( szDllFilename, dwHandle, dwInfoSize, pBuffer
        return false;
 
    if ( 0 == VerQueryValue ( pBuffer, _T("\\StringFileInfo\\040904B0\\ProductVersion"),
                              &pvVersion, &uBufLen ))
        return false;
 
    sProductVersion = (LPCTSTR) pvVersion;
    }
__finally
    {
    delete [] pBuffer;
    }
 
    return true;
}

--Mike--
Latest blog entry: *drool* (Alyson) [May 10]
Ericahist | Homepage | RightClick-Encrypt | 1ClickPicGrabber
"You have Erica on the brain" - Jon Sagara to me

Re: Getting version information from a resource

Trollslayer26-May-03 5:04

Trollslayer

26-May-03 5:04

Thanks Mike, but that is to get the version number of an external DLL.
I was trying to avoid redundant information in my project by reading the CompanyName string from the resource and using that to build the registry key entry. This would include ProductName.

Elaine Rose | [Rose]

The tigress is here Big Grin | :-D

Re: Getting version information from a resource

Michael Dunn26-May-03 9:55

Michael Dunn

26-May-03 9:55

That's what the code does, reads the version resource from a binary (it doesn't have to be a DLL, you can pass the filename of your EXE). Just change the "ProductVersion" part in the VerQueryValue() call to the field you want to read.

--Mike--
Latest blog entry: *drool* (Alyson) [May 10]
Ericahist | Homepage | RightClick-Encrypt | 1ClickPicGrabber
"You have Erica on the brain" - Jon Sagara to me

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