C / C++ / MFC Discussion Boards

liuyue22-Jun-05 5:44

22-Jun-05 5:44

i debug my program, and the exception (unhandled exception in gis.exe(MFCO42D.DLL):0xc0000005 access violation.) arised when the instruction(mapinfo.CreateDispatch("MapInfo.Application"))run. how can i deal with it?

Re: what is MFCO42D.DLL?

David Crow22-Jun-05 5:59

David Crow

22-Jun-05 5:59

It is the debug version of the MFCOLE Shared Library.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: what is MFCO42D.DLL?

liuyue22-Jun-05 14:29

liuyue

22-Jun-05 14:29

how can i deal with the problem?

Re: what is MFCO42D.DLL?

David Crow23-Jun-05 3:14

David Crow

23-Jun-05 3:14

Well, either mapinfo is not a valid COleDispatchDriver object, or "MapInfo.Application" is not a valid automation object identifier. I'd have to see more of your code to know for sure.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: what is MFCO42D.DLL?

ThatsAlok22-Jun-05 18:22

ThatsAlok

22-Jun-05 18:22

liuyue wrote:
mapinfo.CreateDispatch("MapInfo.Application"))

Please Check that mapinfo variable hold valid reference to memory

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

get logged on user

hph22-Jun-05 5:19

hph

22-Jun-05 5:19

hello,

i need to know who to determine whether a user is logged on or not. i have already tried GetUserName but this didn't work, because i have a service running as 'system', so GetUserName only returns 'system'. Now, how can i get this information ?

OS: Windows 2000

Thanks in advance.

Re: get logged on user

David Crow22-Jun-05 5:55

David Crow

22-Jun-05 5:55

Check out the UserName property of Win32_ComputerSystem.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: get logged on user

Toby Opferman22-Jun-05 9:12

Toby Opferman

22-Jun-05 9:12

If this is Windows 2000 and you think they will always launch the shell you could simpy enumerate processes looking for explorer.exe or whatever they replaced the shell with.

Alternatively you could write a Winlogon Notification DLL which gets notified of events such as Logon and Logoff.

8bc7c0ec02c0e404c0cc0680f7018827ebee

Re: get logged on user

hph22-Jun-05 22:24

hph

22-Jun-05 22:24

thanks for the hints, but i have found another workaround. because i have already a process which gets launched at startup - i simply put a pipe in it, which delivers the needed informationen whether a user has logged on.

thanks anyway.

create check boxes on run time

softtec22-Jun-05 5:16

softtec

22-Jun-05 5:16

actually i want to open number of files at same time and at each time when ill click on "openfile" on "file" menu a check box would be created for each file. On each open file action check box would be created on group box next to previous one.
how can i do this?

Re: create check boxes on run time

David Crow22-Jun-05 5:19

David Crow

22-Jun-05 5:19

softtec wrote:
how can i do this?

Do what? Open a number of files at the same time? Create a checkbox for each opened file? Add to a menu? What group box?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: create check boxes on run time

softtec22-Jun-05 5:28

softtec

22-Jun-05 5:28

actually i have created a menu
when i click openfile on File menu, a checkbox is created in groupbox right
but it works only when i open single file
as i click openfile menu i got assertion error
now i want whenever i click on open file menu,check box is created
and if i again click on open file menu another checkbox will be created just below the previuos one in the same groupbox.

Re: create check boxes on run time

David Crow22-Jun-05 5:39

David Crow

22-Jun-05 5:39

softtec wrote:
a checkbox is created in groupbox right

What groupbox?

softtec wrote:
as i click openfile menu i got assertion error

What line of what file is asserting?

Are you using MFC?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: create check boxes on run time

softtec22-Jun-05 5:47

softtec

22-Jun-05 5:47

CButton b;
CRect rect;
rect.SetRect(20,20,200,40);
b.Create(name,WS_CHILD | WS_VISIBLE | BS_CHECKBOX | BS_AUTOCHECKBOX,rect,&m_Stat,2)
where CButton m_Stat;is variable connected to GroupBox

Manifest

Alex_Y22-Jun-05 5:05

Alex_Y

22-Jun-05 5:05

I have Proj.exe + Proj.exe.manifest

Proj.exe calls foo.dll
Question: How can I disable influence of manifest on foo.dll

May be there is some compilation keys which can explicitly tell to use ComCtrl32.dll version 5 instead of 6(support XP styles)

Another words foo.dll should not use XP styles enabled in manifest but Proj.exe should

Thanks

We yesterday got drunk with Bacchus ...

Re: Manifest

Alex_Y22-Jun-05 9:08

Alex_Y

22-Jun-05 9:08

Guys do you think it could help?

If you do not define this macro in your project, it is automatically defined as 0x0500. To define a different value, you can add the following to the compiler directives in your make file; substitute the desired version number for 0x0400.

/D _WIN32_IE=0x0400

Another method is to add a line similar to the following in your source code before including the Shell and Common Control header files; substitute the desired version number for 0x0400.

#define _WIN32_IE 0x0400
#include <commctrl.h>

Version Description
0x0200 The application is compatible with Comctl32.dll and Shell32.dll version 4.00 and later. The application cannot implement features that were added after version 4.00 of Comctl32.dll.
0x0300 The application is compatible with Comctl32.dll and Shell32.dll version 4.70 and later. The application cannot implement features that were added after version 4.70 of Comctl32.dll.
0x0400 The application is compatible with Comctl32.dll and Shell32.dll version 4.71 and later. The application cannot implement features that were added after version 4.71 of Comctl32.dll.
0x0401 The application is compatible with Comctl32.dll and Shell32.dll version 4.72 and later. The application cannot implement features that were added after version 4.72 of Comctl32.dll.
0x0500 The application is compatible with Comctl32.dll version 5.80 and later, and Shell32.dll and Shlwapi.dll version 5.0 and later. The application cannot implement features that were added after version 5.80 of Comctl32.dll, or version 5.0 of Shell32.dll and Shlwapi.dll.
0x0501 The application is compatible with Comctl32.dll version 5.81 and later, and Shell32.dll and Shlwapi.dll version 5.0 and later. The application cannot implement features that were added after version 5.81 of Comctl32.dll, or version 5.0 of Shell32.dll and Shlwapi.dll.
0x0600 The application is compatible with Comctl32.dll version 6.0 and later, and Shell32.dll and Shlwapi.dll version 6.0 and later. The application cannot implement features that were added after version 6.0 of Comctl32.dll, or version 6.0 of Shell32.dll and Shlwapi.dll.

We yesterday got drunk with Bacchus ...

Re: Is there a Cleaner way to this DLL

David Crow22-Jun-05 4:33

David Crow

22-Jun-05 4:33

What do you mean by "a cleaner way?"

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: Is there a Cleaner way to this DLL

David Crow22-Jun-05 5:10

David Crow

22-Jun-05 5:10

I'm still unclear as to what you are asking.

http://www.codeproject.com/dll/[^]

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: Is there a Cleaner way to this DLL

Anonymous22-Jun-05 5:22

Anonymous

22-Jun-05 5:22

As in make the Code shorter more proffesional or more appealing ?

I cant think of another shorter method to do this.
I cant use Class Items like stated on the link you send me.

Re: Is there a Cleaner way to this DLL

David Crow22-Jun-05 5:45

David Crow

22-Jun-05 5:45

Given that it's hard to tell what your code is even doing, it's impossible for me to offer any suggestion(s). Does it solve the probem it was meant to solve? If so, why are you wanting to mess around with it? If not, what are you using to confirm its inefficiency?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

file open problem

softtec22-Jun-05 3:48

softtec

22-Jun-05 3:48

is there any wrong in the fallowing code bcoz it cannot found file
CFile LogFile("E:\\log.txt",CFile::modeCreate||CFile::modeWrite||CFile::modeNoTruncate||CFile::typeText);
LogFile.SeekToEnd();
LogFile.Write(fname,sizeof(fname));
LogFile.Close();
where fname is of type CString.

Re: file open problem

Member 128699622-Jun-05 4:13

Member 1286996

22-Jun-05 4:13

CFile LogFile("E:\\log.txt",CFile::modeCreate||CFile::modeWrite||CFile::modeNoTruncate||CFile::typeText)

The problem is ||

Do this :
CFile LogFile("E:\\log.txt",CFile::modeCreate | CFile::modeWrite | CFile::modeNoTruncate | CFile::typeText)

Bonne chance

Re: file open problem

David Crow22-Jun-05 4:26

David Crow

22-Jun-05 4:26

softtec wrote:
CFile LogFile("E:\\log.txt",CFile::modeCreate||CFile::modeWrite||CFile::modeNoTruncate||CFile::typeText);

Given that you used || instead of |, the second parameter is evaluating to 1, which is the same thing as CFile::modeWrite. That's why the file does not get created.

Also, the CFile::typeText flag is ignored with CFile objects. It's used with derived classes only.

softtec wrote:
LogFile.Write(fname,sizeof(fname));

This should be LogFile.Write(fname, fname.GetLength() * sizeof(TCHAR)) instead.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: file open problem

softtec22-Jun-05 5:10

softtec

22-Jun-05 5:10

thnx it works now

Re: file open problem

basementman22-Jun-05 4:47

basementman

22-Jun-05 4:47

If you are using CString for fname, you should not use sizeof for the length. You should use fname.GetLength().

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