Re: CFtpConnection::Command() - C / C++ / MFC Discussion Boards

Re: CreateInstance - not sure what exactly it does

ns6-Aug-02 7:44

6-Aug-02 7:44

It worked to just close the recordset and reopen with a new command. I think if you dont close it and try to open it again with a different command, it bombs. I was looking for something like rs.clear() and .close() escaped me. I thank you very much!
ns Wink | ;)

flipping surfaces

sagmam6-Aug-02 5:26

sagmam

6-Aug-02 5:26

Hi, I'm learning DirectDraw. I have a problem:

I've created two surfaces using a COMPLEX surface, because I want to do some flipping. I'm using FULLSCREEN | EXCLUSIVE | NOWINDOWCHANGES mode.

The flipping occurs, but for split second, every once in a while, I see the desktop and everything on it. A flicker, if you wish to call it that...

The mouse cursor is always visible during my animation, although I'm in full screen. And the cursor seems to be "aware" of what's going on "behind" my application:
It changes its shape according to messages of other windows, and if I try to "drag" somewhere on my fullscreen application, it activates the window behind it (let's say, Microsoft Word) and starts highlighting text!!!

I've tried maximizing my MFC window before entering fullscreen. It doesn't help, since my own application window still responds, and I can see it when a flicker occurs.... The taskbar is also responding (I see it flickering when I move the cursor over it).

How do I REALLY get exclusive access to the display???????

/=/=/=/=
Deus
/=/=/=/=

CArray- AssertValid

CSharpDavid6-Aug-02 5:10

CSharpDavid

6-Aug-02 5:10

I have a program that uses CArray <ccode, ccode=""> m_IL;
Everything compiles @ level 4
when I try to use .Add(code) - the CArray asserts with Assert valid , invalid vtable . Why ??????
Could someone please help!!!!!! Confused | :confused:

viva AMIGA

Re: CArray- AssertValid

Martin Ziacek6-Aug-02 5:17

Martin Ziacek

6-Aug-02 5:17

If you have declared it as CArray m_IL, then that's wrong. It is a template, you have to use it as e.g.:

CArray <type, type="" &=""> m_IL;

Otherwise, post your code here.

Martin

--------------------------------------------
C'mon we all know computers are experimental devices and should only be used for playing games.
Using them for alternative stuff like business, is clearly not using them for what they are intended.

Colin Davies

Re: CArray- AssertValid

CSharpDavid6-Aug-02 6:13

CSharpDavid

6-Aug-02 6:13

it is defined as CArray <ccode ,="" ccode=""> m_IL

viva AMIGA

Re: CArray- AssertValid

CSharpDavid6-Aug-02 6:23

CSharpDavid

6-Aug-02 6:23

Ahhh the html is picking up the <> its
CArray <CCode,CCode> m_IL

viva AMIGA

CFtpConnection::Command()

carrie6-Aug-02 4:50

carrie

6-Aug-02 4:50

I've just found this function but I'm having a problem getting a response from the ftp server. Parameter 2 in the documentation says it should be set as

CmdResponseType eResponse = CmdRespRead

to get a response back from the server, but anyway I try to change it to this it won't compile because it doesn't recognise what CmdResponseType is or it doesn't recognise CmdRespRead.

Has anyone had experience of how to get around this? Thanks for listening again Smile | :)

ps, the function is this one that I'm trying to use. Thanks
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/vclrfCFtpConnectionCommand.asp

Re: CFtpConnection::Command()

carrie6-Aug-02 10:22

carrie

6-Aug-02 10:22

Sorry, forgot to mention that I'm using VS.Net to make this, so its that version of MFC thats being used.

So far all I've discovered that the CmdResponseType is defined as an enum in the afxinet.h file, but I can't for the life of me make any use of it at all Frown | :(

Thanks for any help I may get

CScrollBar

Anonymous6-Aug-02 4:37

Anonymous

6-Aug-02 4:37

Hi... I have a problem.
How to get the scrollbar of a CListCtrl and change its background color ?

How to : let system collect the memory that has already been freed by application

Simon.W6-Aug-02 4:14

Simon.W

6-Aug-02 4:14

Hi:
When my application start, it allocated some memory from private heap and freed them later,but windows didn't collect them.Windows report that those memory blocks were in use.So, yy question is:
How to : let system collect the memory that has already been freed by application

I am seeking...
For what?
Why did you ask me for what? I don't know!

Re: How to : let system collect the memory that has already been freed by application

C^hris L^osinger6-Aug-02 7:12

C^hris L^osinger

6-Aug-02 7:12

you can try _heapmin

-c

To explain Donald Knuth's relevance to computing is like explaining Paul's relevance to the Catholic Church. He isn't God, he isn't the Son of God, but he was sent by God to explain God to the masses.
/. #3848917

image effects!

Re: How to : let system collect the memory that has already been freed by application

Ravi Bhavnani6-Aug-02 7:35

Ravi Bhavnani

6-Aug-02 7:35

See my MemWatcher[^] tool.

/ravi

Let's put "civil" back into "civilization"
http://www.ravib.com
ravib@ravib.com

Problem with extern and linkage

Janine6-Aug-02 2:50

Janine

6-Aug-02 2:50

Hi,

I'm using a library and I need to redirect function calls in that library. What I mean is that in the library, there are calls to a function and I want the calls to be calls of another function. The problem is that I can't include that file, where those new functions are to the library and I can't modify that library very much.

So, I'm using extern and define in the files of the library to solve the problem and I'm able to make the library without compilation/linking errors. The problem is how to link/compile/include the library with my application? Now I keep getting LNK2001 errors telling me that the library doesn't find the definitions of those functions. I'm using makefile and in there I have linked the object file that contains the new functions to be used and also the library. That is apparently not enough. I even tried putting the object file before the library when linking.

-Janetta

Re: Problem with extern and linkage

Joaquín M López Muñoz6-Aug-02 2:53

Joaquín M López Muñoz

6-Aug-02 2:53

Maybe you're misxing C and C++ styles of linking. Make sure the portion of library using the external function and the object code providing it are the same language. You can also use extern "C" in both parts if the languages are different.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Problem with extern and linkage

Janine6-Aug-02 3:51

Janine

6-Aug-02 3:51

But of course that was the problem Smile | :)

Thanks!

-Janetta

read and write undifined bit data problem

Anonymous6-Aug-02 1:37

Anonymous

6-Aug-02 1:37

Hi,

In application, i need write the some binary data into file.
But the data cannnot be represented by the data types, such as
unsigned char, unsigned short and so on.

My problem is:
i have 1 bit(value 1) for number of 45, 1 bit (value 0) for number of 40, and 1 bit(value 1) for number of 45, and finally 1 bit (value 0)for number of 2728. Now i want to write these single bit into a file. How can i define the buffer (in types) for dealing with above bits?

How to do this?

Thanks in advance!

Re: read and write undifined bit data problem

Joaquín M López Muñoz6-Aug-02 2:20

Joaquín M López Muñoz

6-Aug-02 2:20

I don't quite understand your question, but seems you'll have to use bitfields. Look for some tutorials on bitfields to get started.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Registering a 'DLL'

RChin6-Aug-02 1:29

RChin

6-Aug-02 1:29

This is a simple question regarding registering a DLL that spurned from a current article about plugins:
http://www.codeproject.com/dll/PlugIn.asp

I thought that only COM DLLs needed registering with the OS. Regular DLLs
can be used as is, and registering is pointless. Am I completely wrong?

I wonder if someone would explain this to me as it has been bugging me for a while.

chin

Happy, Happy, Joy, Joy.

Re: Registering a 'DLL'

Tomasz Sowinski6-Aug-02 1:41

Tomasz Sowinski

6-Aug-02 1:41

Rchin wrote:
Regular DLLs can be used as is, and registering is pointless. Am I completely wrong?

You're right. I've searched the article text, and there's no mention about 'registering' the plugin dlls. Did I miss something? Smile | :)

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

What is "scratch" and why can everything be made from it?

Re: Registering a 'DLL'

RChin6-Aug-02 1:50

RChin

6-Aug-02 1:50

One of the article's response thread entitled 'Registering a dll in Windows 2000' got me thinking on a tangent about registering DLLs in general.

I just wanted someone to confirm (or deny) that the registration process for DLLs is only applicable to COM components with the DLL file extension.

One of the most frequently asked question around my office when installing a piece of software is 'Have you registered this/that DLL'. I am convinced that this is not a necessary practice for regular DLL libraries.

thanx for the reply.
chin

Re: Registering a 'DLL'

Joel Lucsy6-Aug-02 3:05

Joel Lucsy

6-Aug-02 3:05

You are correct. Anything to do with COM typically should be registered. There are ways to deal with COM without registering, but it's more problems then it's worth.
COM files come in many flavors however: dll,ocx,exe. Actually, you could call the file anything you want. But it must export (some) the functions DllRegisterServer, DllCanUnloadNow, DllGetClassObject, DllUnregisterServer.
Regular DLL's can't be registered since they wouldn't have those functions.

Joel Lucsy (jjlucsy@ameritech.net)

Re: Registering a 'DLL'

RChin6-Aug-02 3:13

RChin

6-Aug-02 3:13

Thank you.
That helps.

chin

ADO exception problem

unknown soldier6-Aug-02 1:17

unknown soldier

6-Aug-02 1:17

I am writing a simple DOS applicaion that is using ADO to connect to data source. The COM libraries are initializing successfully and the connection to database by connection pointer is also established.

But when i try to run a "query" using connection pointer, the following exception is raised:

Error:800a0e81.
ErrorMessage:Unknown error 0x800A0E81.
Source:ADODB.Connection.
Description:Operation cannot be performed while connecting asynchronously..

Can any one tell me why this happens ???

Here is my code:

	_bstr_t bstrQuery("SELECT * FROM Customers");
	_variant_t vRecsAffected(0L);
	_RecordsetPtr pRecordSet;

pRecordSet = m_pConnection->Execute(bstrQuery, &vRecsAffected, adOptionUnspecified);

Re: ADO exception problem

RChin6-Aug-02 1:36

RChin

6-Aug-02 1:36

Just a stab in the dark, but you might need to create an instance of the
Recordset object

_RecordsetPtr pRecordset = NULL;

// Create COM instance. You should also test the return code for
// this for success.
pRecordset.CreateInstance(__uuidof(Recordset));

//
// etc. etc..

chin

Re: ADO exception problem

unknown soldier6-Aug-02 2:11

unknown soldier

6-Aug-02 2:11

Not worked

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