C / C++ / MFC Discussion Boards

Re: adding items to list box

parichaybp6-Apr-06 0:59

parichaybp

6-Apr-06 0:59

one more thing how to remove the selected the item from list box using the remove button.

run program problem

beardy janggut5-Apr-06 22:02

beardy janggut

5-Apr-06 22:02

hi!!

1.how can i execute my program in PC which is not installed VC++ 6.0. An error appear that MFC32.DLL was missing (i dont remember the exact error).

HelpMe

Re: run program problem

toxcct5-Apr-06 22:07

toxcct

5-Apr-06 22:07

when providing your program, you have to either statically link the MFC dll (i don't recommend because it will considerabily increase the size of your exe), or provide the 2 or 3 dlls required.
they are mainly MFC32.DLL and MSVCRT.DLL

to know exactly which DLLs your program is linking to, you could use Dependency Walker[^] tool (which is provided with VS6 - look in the start menu | Programs | Visual Studio 6 | Tools)

Re: run program problem

David Crow6-Apr-06 3:15

David Crow

6-Apr-06 3:15

v2.0 wrote:
to know exactly which DLLs your program is linking to, you could use Dependency Walker[^] tool

Correction. To know exactly which DLLs your program is implicitly linking to, you could use the Dependency Walker tool. Those that are explicitly linked will not show up in the Dependency Walker tool.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Re: run program problem

toxcct6-Apr-06 3:22

toxcct

6-Apr-06 3:22

sure, but he his case, it might solve his needs...
moreover, even if he links some dlls dynalically, i hope he knows about them...
but good intervention David Wink | ;)

Re: run program problem

Aqueel6-Apr-06 0:48

Aqueel

6-Apr-06 0:48

1. Open your project in MS VC++ compiler.
2. Go to Project and then Settings
3. Select Genral tab, Under Microsoft Foundation Class, select
Use MFC in a Static Library
4. Recompile your project.
Good luck Smile | :)

We Believe in Excellence
www.aqueelmirza.cjb.net

-- modified at 6:50 Thursday 6th April, 2006

why did I get this error?

swapna_signsin5-Apr-06 21:55

swapna_signsin

5-Apr-06 21:55

Hi,
Iam actually trying to use record set with just a simple in dialogbased application.I have a form with two edit boxes m_name1 and m_grade1 and I've used a button called display pressing on which I should retrieve the results from the database.So,now my problem I constantly get errors saying m_name1 :Undeclared identifier and when I try to declare a recordset var say *m_prs I get an error .So,how do I actually retireve records.Where should I actually write the code regarding that?In the form or in the derived dialog class.

pls help

swapna_signsin

Re: why did I get this error?

Rudolf Jan6-Apr-06 0:51

Rudolf Jan

6-Apr-06 0:51

Without the code giving debugging advice is difficult. Some suggestions:

- Did you declare the member variables?
- Did you include all required header files?
- Did you spell the class names for the edt boxed correct?
- Dit you include semicolons after each declaration?
- Did you use the correct numer of braces?
- Did you close your function with a curly brace? This can be very nasty to find out.

Sometimes you get strange error messages if you forget a token. The error also may occur at upexpected places.

Re: why did I get this error?

thatsme_cool6-Apr-06 1:48

thatsme_cool

6-Apr-06 1:48

Hi swapna
did u got my mail
I hv posted u sample application Big Grin | :-D

Re: why did I get this error?

David Crow6-Apr-06 3:20

David Crow

6-Apr-06 3:20

swapna_signsin wrote:
...when I try to declare a recordset var say *m_prs I get an error .

Did you use ClassWizard to derive a class from CRecordset? In the dialog's .h file, add a member variable (not a pointer) of this new class. In the dialog's OnInitDialog() method, call the recordset's Open() method.

When you get all of this done correctly, post back and we can give you the rest of what is required.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Win32 Owner Draw

Anilkumar K V5-Apr-06 21:40

Anilkumar K V

5-Apr-06 21:40

How to make an owner drwan Picture Box in ATL ( not using MFC support)
I need the picture transparent in the dialog.

I am using ATL composite control dialog

Any suggestion , code are welcome

Thanks
Anil

Re: Win32 Owner Draw

YaronNir6-Apr-06 2:55

YaronNir

6-Apr-06 2:55

use the CreateCompatibleDC win GDI function, then when u have the dc, just bitblt the bitmap in it.
to make it transparent use the alpha blend there are many samples of transparent bitmaps in codeproject...

hope this helps

Ask not what your application can do for you,
Ask what you can do for your application

Re: Win32 Owner Draw

Anilkumar K V9-Apr-06 20:11

Anilkumar K V

9-Apr-06 20:11

But there Picture Control, there is no Owner draw property listed in Property Window. I manuall modified rc file and add SS_OWNERDRAW, But i am not gettiing the WM_DRAWITEM message....

So i cant do any drawing for this picture box

Re: Win32 Owner Draw

YaronNir9-Apr-06 20:14

YaronNir

9-Apr-06 20:14

oh now i see the problem....

as far as i know, you can not do a picture control owner draw, the idea of a picture control is to load a picture stored in the resources....

do it an a different way, one would be to get the window/dialog DC and then continue as suggested above, without using the picture control...

hope it helps

Ask not what your application can do for you,
Ask what you can do for your application

WMI in VC++, Access Denied

tobeymag5-Apr-06 21:33

tobeymag

5-Apr-06 21:33

Hi all,

I am trying to use WMI (just learning) in VC++. However, there seems
to be a problem when it comes to connecting to a Remote Host . Which
works very well on the local computer. The machine I am trying to
connect has Win2K on it and I have WinXP installed on my machine. Now,
when I try to execute the following code snippet, it gives me an Access
Denied error. Also when I try to query the same through WBEMTEST.exe,
everything work fine. Here is the code snippet : -

// Initialize Security
hrRetVal = CoInitializeSecurity(NULL,
-1,
NULL,
NULL,
RPC_C_AUTHN_LEVEL_CALL,
RPC_C_IMP_LEVEL_IMPERSONATE,
NULL,
EOAC_NONE,
0);

// CreateInstance
hrRetVal = CoCreateInstance(CLSID_WbemLocator,
NULL,
CLSCTX_INPROC_SERVER | CLSCTX_LOCAL_SERVER,
IID_IWbemLocator,
(void **) &pWbemLocator);

BSTR bsNameSpace = SysAllocString(L"//RemoteComputer/root/cimv2");
BSTR bsUserName = SysAllocString(L"abc");
BSTR bsPassword = SysAllocString(L"123");

// Connect to the Server
hrRetVal = pWbemLocator->ConnectServer(bsNameSpace,
bsUserName,
bsPassword,
0,
NULL,
NULL,
0,
&pWbemServices);

// Query the Proxy Blanket for Authorization Level
hrRetVal = CoQueryProxyBlanket(pWbemServices,
NULL,
NULL,
NULL,
&dwAuthLevel,
NULL,
NULL,
NULL);

// Set the Proxy Blanket to the Authorization Level
hrRetVal = CoSetProxyBlanket(pWbemServices,
RPC_C_AUTHN_WINNT,
RPC_C_AUTHZ_NAME,
NULL,
dwAuthLevel,
RPC_C_IMP_LEVEL_IMPERSONATE,
NULL,
EOAC_NONE);

// Execute Query --> Access Denied
hrRetVal = pWbemServices->ExecQuery(L"WQL",
L"Select * from Win32_Service",
WBEM_FLAG_RETURN_IMMEDIATELY,
NULL,
&pEnumObject);

It is here that I receive an Access Denied error. I don't seem to know
what is th problem.
Any help would be appreciated.

Thanks
TobeyMag

Re: WMI in VC++, Access Denied

tobeymag6-Apr-06 21:28

tobeymag

6-Apr-06 21:28

Hello,

Isn't there anyone who could help me.

Thanks
-TobeyMag

Internet Connection status

mahesh_patil1665-Apr-06 21:31

mahesh_patil166

5-Apr-06 21:31

Hi all,

In visual c++ InternetGetConnectionStatus() Function does not return connection status rather it return Connection is whether through modem or proxy. I want to check it is currenty connected or not. Please help.

Thanks Regards
Mahesh

Re: Internet Connection status

kakan5-Apr-06 21:56

kakan

5-Apr-06 21:56

Try InternetGetConnectedStateEx(), in wininet.dll.
But beware, all versions of wininet.dll doesn't have InternetGetConnectedStateEx().
In that case, use InternetGetConnectedState()

Re: Internet Connection status

Mila0256-Apr-06 2:54

Mila025

6-Apr-06 2:54

Hi,

You can use IcmpSendEcho2 to send an ICMP Echo request (ping) to an well-known server i.e. www.google.com.

-----------
Mila

Re: Internet Connection status

kakan6-Apr-06 4:04

kakan

6-Apr-06 4:04

I'm not sure, but what about those who connects via DUN/modem?
Won't a ping bring up the DUN connection dialog (if the connection isn't there)?

As I remember, that was the reason for me to use the metod above, it tests silently whether there is an Internet connection or not. Without a DUN connction dialog.

Free Heap block modified after it was freed

DirkBugner5-Apr-06 21:18

DirkBugner

5-Apr-06 21:18

Dear All,

I have the following problem:

Environment:
Visual Studio 6.0, Service Pack 6, C++, Windows XP
Software is using “Microsoft.Jet.OLEDB.4.0”

After a view hours of operation in debugger, the software stops with the message box “User defined breakpoint”.

Message in output window is:
HEAP[Ellipson.exe]: HEAP: Free Heap block 5cbf760 modified at 5cd2f4c after it was freed

(Ellipson.exe is my program)

Output in callstack window:

NTDLL! 7c911230()
NTDLL! 7c959b79()
NTDLL! 7c9369a9()
NTDLL! 7c97e062()
NTDLL! 7c95a5d0()
NTDLL! 7c9368ad()
MSJET40! 1b005262()
MSJET40! 1b04af35()
MSJET40! 1b01a6f2()
05356890()

Memory and 5cbf760:

05CBF760 14 2D 15 24 AC 14 18 01 78 01 34 05 48 AE C9 05 EE FE EE FE EE FE EE FE EE FE EE FE EE FE EE FE EE and so on …

Memory at 5cd2f4c:
05CD2F4C EE FC EE FE EE FE EE FE EE FE EE FE EE

Here is this FC. This is causing the problem.
I have no idea, how this FC was written to this address. But before allocating memory the debugger checks the memory for the sequence of FE EE. FC is not expected and so the debugger stops the software.
Has anybody an explanation what FC in terms of memory means?
I also can not explain the callstack. This thread is not the main thread and no thread I did start (they all have names). The software is doing inter process communication to a service by COM. Maybe it is a callback from this service?

Thanks for some good advice.

Dirk.

Dirk

Re: Free Heap block modified after it was freed

toxcct5-Apr-06 21:32

toxcct

5-Apr-06 21:32

i don't understand...
if the memory was freed, so you don't own it anymore, so any other data can be put at this address so...

Re: Free Heap block modified after it was freed

DirkBugner5-Apr-06 21:48

DirkBugner

5-Apr-06 21:48

Here is a sample to force this error:

m_nSize = 1000;
m_pbArray = new BYTE[m_nSize];
for(int itr=0; itr

SQLite ~ Access

aukh5-Apr-06 20:55

aukh

5-Apr-06 20:55

I need to decide between SQLite or Access Data Base, to build dynamically in my project.
Can you please give me advantages and disadvantages for each one, and advice me wich one to use?

aukh

Re: SQLite ~ Access

scoroop6-Apr-06 0:05

scoroop

6-Apr-06 0:05

i would use sqlite because it's easy, simple and quite handy. api is developer-friendly. if your project is not too complicated and you don't need really huge functionality of database, sqlite is just fo you.

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