Feature Pack 2008? - C / C++ / MFC Discussion Boards

Re: Sinhronisation of allocation and freeing of memory

Gastello27-Jul-09 0:29

Gastello

27-Jul-09 0:29

I found the problem, there was "static" variables inside functions.

Details of Error Message in MSIPackageDiff

Member 154408721-Jul-09 5:18

Member 1544087

21-Jul-09 5:18

Hi,

I have built 2 MSI with same configuration. Just rebuilded. When I am comparing those 2 MSIs using MSIPackageDiff, I am getting some of the error in Binary Table.
Can someone explain me what are these changes?

Thanks & Regards,
Swapnil D. Lokhande

How to trace MFC command? SOLVED

Vaclav_21-Jul-09 5:10

Vaclav_

21-Jul-09 5:10

Can someone please direct me to a source of information on how to trace / debug standard MFC commands. For example File.. Save.. I am using "MFC Internals" for a guide but cannot see how to debug the command message flow.
Thanks for reading
Cheers Vaclav

Update
I have overridden OnCommand in main and MDI frame and can trace the command flow from the main menu to the MDI OnCommand. Now how do I get / step into base class? F11 does not respond.

modified on Tuesday, July 21, 2009 4:07 PM

Re: How to trace MFC command?

led mike21-Jul-09 5:57

led mike

21-Jul-09 5:57

See if this MSDN article on Command Routing [^]helps

Re: How to trace MFC command?

Vaclav_21-Jul-09 7:22

Vaclav_

21-Jul-09 7:22

Thanks Mike,
The article does confirm what I got from the book. What I am still missing is how to get to the base class using debug steps.
I must be missing some options in my VC 6.0 because F11 just does not do anything visible and the program is stuck in last debug point. I will try just source code of the MFC base class next.

Vaclav

Re: How to trace MFC command?

Maximilien21-Jul-09 8:50

Maximilien

21-Jul-09 8:50

Up to a point, I think at the Win32 level, there is no more visible "code" to step into.

This signature was proudly tested on animals.

Re: How to trace MFC command?

Vaclav_21-Jul-09 10:07

Vaclav_

21-Jul-09 10:07

After raking a short brake from coding I came to the same conclusion.
It always amazes me how taking breaks from many “problems” gives person a different outlook on things. Was that covered in some famous book?
Thanks for your help.
Vaclav

Feature Pack 2008?

Software200721-Jul-09 4:52

Software2007

21-Jul-09 4:52

I would like to use the CMFCtoolBars to replace CToolBars, so I am guessing I need to integrate the Feature Pack to my MFC application. Do I have to change all the base classes(CStatusBar, CWinApp...etc) to those from the feature pack if I only wanted to change the CToolbar, or can I change CToolBar only and still get it to work?

Thanks

Re: Feature Pack 2008?

Maximilien21-Jul-09 5:50

Maximilien

21-Jul-09 5:50

I think you can just "plug'n'play".

This signature was proudly tested on animals.

Number of interactive logged on users on Windows Vista

Eikthrynir21-Jul-09 3:18

Eikthrynir

21-Jul-09 3:18

I created a test application using LsaEnumerateLogonSessions and LsaGetLogonSessionData, which displays the number of interactive logged on users. It works fine on Windows XP, but it displays 2 interactive logged on users on Windows Vista, even though I have only one user: the Administrator.

Can anyone tell me why this happens?

Thanks!

Re: Number of interactive logged on users on Windows Vista

David Crow21-Jul-09 4:17

David Crow

21-Jul-09 4:17

Eikthrynir wrote:
...but it displays 2 interactive logged on users on Windows Vista, even though I have only one user: the Administrator.

Is the other a legitimate user, just not logged on?

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Re: Number of interactive logged on users on Windows Vista

Eikthrynir21-Jul-09 4:34

Eikthrynir

21-Jul-09 4:34

I modified the application so that it displays also the user name. It's the same user...

Re: Number of interactive logged on users on Windows Vista

Eikthrynir21-Jul-09 4:40

Eikthrynir

21-Jul-09 4:40

The LogonId data members are different, even though the UserName data member are the same...

Re: Number of interactive logged on users on Windows Vista

David Crow21-Jul-09 4:43

David Crow

21-Jul-09 4:43

So it's showing Administrator twice? When I use that function on XP, it returns 6 sessions, even though I am the only one logged on to my machine. I don't have access to a Vista machine to see how it behaves.

What do NetWkstaUserEnum() and WTSEnumerateSessions() return?

Re: Number of interactive logged on users on Windows Vista

Eikthrynir21-Jul-09 5:12

Eikthrynir

21-Jul-09 5:12

No need to check. I think I known what's happening. I modified the application to display other information too. The SessionId for each occurence of MyAdminUser is different: it runs both in Session 0 and Session 1 and that's why it is shown twice. On Vista (I guess Window 7 too) I only have to skip counting the user running in Session 0. Thus, I get the correct number of interactive logged on users. As I have seen, on Windows XP there is no need for this trick.

I consider this problem solved now.
But there is something strange that happened while I was testing on my Vista machine: I had MyAdminUser and MyLimitedUser both logged on; my application showed 3 users (Session 0 (MyAdminUser), Session 1 (MyAdminUser), and Session 2 (MyLimitedUser)); I logged off from MyLimitedUser and immediately ran the application; it still showed 3 users; after almost minute, when I re-ran the application, it correctly showed 2 users: MyAdminUser (Session 0) and MyAdminUser (Session 1). What I am trying to say is that it showed 3 users for almost a minute... Confused | :confused:

The strange thing is that I could not reproduce the problem. I tried to make it happen again, but I couldn't. I wonder why Windows needed so much time to update the number of interactive logged on users...

Re: Number of interactive logged on users on Windows Vista

David Crow21-Jul-09 5:18

David Crow

21-Jul-09 5:18

Eikthrynir wrote:
I wonder why Windows needed so much time to update the number of interactive logged on users...

Caching?

How to apply alpha value to COLORREF

mutpan21-Jul-09 2:32

mutpan

21-Jul-09 2:32

Hi All,

I am having COLORREF variable and i need to apply 60% alpha value to this color.

COLORREF clrSelection = RGB(255,65,67);

My requirement is to apply alpha value as 64 to the 'clrSelection' variable. How to do this in C++,MFC?

Thanks in advance,
Mutpan.

Re: How to apply alpha value to COLORREF

Nishad S21-Jul-09 3:08

Nishad S

21-Jul-09 3:08

AFAIK, you need to use GDI+ inorder to use alpha.

But you can keep the alpha value in COLORREF as

COLORREF clr = RGB( 1, 2, 3 );
BYTE alpha   = 4;

clr |=  ( alpha << 24 );

- ns ami -

Debugging unmanaged DLL called from managed C#

Chesnokov Yuriy21-Jul-09 2:11

Chesnokov Yuriy

21-Jul-09 2:11

I've got unmanaged DLL that is being called from C# application using Interop. I need to step into native DLL function either from C# or debug native DLL and break at some break point.

I set up Enable unmanaged code debugging in C# console.
The DLL function is called correctly, e.g. it prints the message to console.

But as I run DLL with F5 and it invokes C# console, the break points do not work.
Nor can I step into DLL unmanaged code from C# console.

Чесноков

How to find where the EXIT_SUCCESS and EXIT_FAILURE included please?

ggyyree21-Jul-09 1:43

ggyyree

21-Jul-09 1:43

Dear all,

I have got some source codes where used lots of EXIT_SUCCESS and EXIT_FAILURE for return values. I knew these EXIT_SUCCESS and EXIT_FAILURE are defined in stdlib.h/cstdlib.h; however, I don't see the source including both of the header files.

Of course, the source may include a header which include stdlib.h/cstdlib.h.

My question is how I can find where exactly the stdlib.h/cstdlib.h have been included.

Thanks. $Shucks | :-\$

Re: How to find where the EXIT_SUCCESS and EXIT_FAILURE included please?

ggyyree21-Jul-09 1:47

ggyyree

21-Jul-09 1:47

BTW, I am using Visual Studio 2005. Roll eyes | :rolleyes:

Re: How to find where the EXIT_SUCCESS and EXIT_FAILURE included please?

Stuart Dootson21-Jul-09 2:30

Stuart Dootson

21-Jul-09 2:30

Set the "Generate Pre-Processed File" option (Project Properties->Configuration Properties->C/C++->Preprocessor) to "With Line Numbers (/P)" and examine the .i files that are generated. These will be annotated with '#line items that indicate the original file that code came from.

[edit]Look for stdlib.h and you can find what includes it. afx.h, as far as I can tell.[/edit]

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Memory function equivalent to that found in fread

alleyes21-Jul-09 1:32

alleyes

21-Jul-09 1:32

I'm looking for a method that mimics the functionality of fread without a file pointer. I want to read from a buffer into a buffer, for a number of bytes and move the pointer to the source buffer by the number of bytes returned - like fread.

Anyone done anything like this?

Thanks in advance

Jer 29:11

Re: Memory function equivalent to that found in fread

«_Superman_»21-Jul-09 2:37

«_Superman_»

21-Jul-09 2:37

BYTE* pDest = <Destination Buffer>;
BYTE* pSrc = <Source Buffer>;
SIZE_T size = <Size to Read>;

MemoryRead(pDest, pSrc, size);

SIZE_T MemoryRead(BYTE* pDest, BYTE* pSrc, SIZE_T size)
{
   CopyMemory(pDest, pSrc, size);
   pSrc += size;

   return size;
}

«_Superman_»
I love work. It gives me something to do between weekends.

Re: Memory function equivalent to that found in fread

alleyes21-Jul-09 3:15

alleyes

21-Jul-09 3:15

Very cool and to the point. The key was to return the size - like fread.

Thanks much Big Grin | :-D

Jer 29:11

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.