Looking for windows control - C / C++ / MFC Discussion Boards

Johnny ²13-Nov-03 1:45

13-Nov-03 1:45

It's possible to emulate the effects of reflection and there are several attempts to provide this on the net. A few starters are http://cppxmlobj.sourceforge.net/index.html[^] and https://sourceforge.net/projects/reflection/[^] - have a look through google for more.

Re: Reflection in c++

melwyn13-Nov-03 2:58

melwyn

13-Nov-03 2:58

What is Reflection? I have heard about it in the context of Java.

Re: Try using a factory method

FearlessBurner13-Nov-03 5:26

FearlessBurner

13-Nov-03 5:26

I am also not familiar with Reflection. However if all you want to do is to produce a new class object based on the string passed into a function, one of the factory methods would work fine. For achieving your simple aim, the Builder method or the Abstract Factory should suffice.

I believe that there are various cool methods already on CodeProject on these subjects.

PC Communication using VC++ and TAPI 3

13-Nov-03 1:03

i have written an application..MFC in VC++ to carry out PC 2 PC commn
using TAPI3.0(API's)

all the API's including Answer( ), Disconnect( ),all r wrking that is i am able to dial an IP and connect to that PC,answer a call at the other Pc,
and Hang up frm either sides..without any problem..voice is also being carried..

when i tried Hold( )to hold my call...it does not happen..or the Transfer..
there is no sample code for these and i am utterly confused..

the function does not return OK(will return this if carried out properly)
instead some error..number..is given..

Thanks for the details Michael, Let me explain in detail,

TSP is TAPI3.0

the functions r ITBasicCallControl::Hold

and ITBasicCallControl::Transfer

linehold and linetransfer are for TAPI2.0

my application is completely in TAPI3.0

and the other functions in it like..

ITBasicCallcontrol:: Answer and Connect r wrking perfectly fine..

and i have nothing to do with the modem..

cos this is for PC 2 PC communication

Pls. let me know

Re: PC Communication using VC++ and TAPI 3

Michael P Butler13-Nov-03 2:04

Michael P Butler

13-Nov-03 2:04

Which TSP are you using?

Hold and Transfer are very rarely supported by modems and other similar devices.

What error number do you get returned?

This app JulMar EnumTAPI[^] will show you the capabilities of the TAPI device you are using. You should at least be able to see if the device supports lineHold and lineTransfer.

Michael

'Logic, my dear Zoe, merely enables one to be wrong with authority.' - The Doctor: The Wheel in Space

Connect to Oracle with ODB as sysdba

Anonymous13-Nov-03 1:02

Anonymous

13-Nov-03 1:02

Hi!

I have odb from ben bryant to connect to a oracle database. i connect with a string and the open memberfunction (database,user,pw). now i want to connect with the user sys. in oracle 9 you must connect the user sys with "as sysdba" how i must connect with the odb open memberfunction or another memberfunction as sysdba????

Any Reporting tool?

murali_utr13-Nov-03 0:39

murali_utr

13-Nov-03 0:39

hi,

there is having any free reporting tool like crystal report. help to me.

thanks in advance
Murali.M

Looking for windows control

Stefan Dahlin13-Nov-03 0:35

Stefan Dahlin

13-Nov-03 0:35

I'm looking for the windows control that works like the control in the link below.

http://www.codeproject.com/docking/crdxpcbar.asp

The above control is a good beginning, but don't work like the one in windows.
The windows control is used very often in the new XP user interface.

How to get display properties?

Roozbeh6913-Nov-03 0:21

Roozbeh69

13-Nov-03 0:21

Hi everybody,
Does anyone know how do I get the current font settings used for Message Box in Appearance tab page in display properties dynamically? and then use that font in the dialogs in my VC++ programs?
regards,
Roozbeh

Re: How to get display properties?

Neville Franks13-Nov-03 0:33

Neville Franks

13-Nov-03 0:33

if ( SystemParametersInfo( SPI_GETNONCLIENTMETRICS, sizeof(NONCLIENTMETRICS), &ncm, 0 ) )
   ;

"lfMessageFont
Pointer to a LOGFONT structure that contains information about the font used in message boxes. "

Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

Re: How to get display properties?

Andy Latham14-Nov-03 0:20

Andy Latham

14-Nov-03 0:20

Hi,
I need to do this as well but for me the function returns zero and so does GetLastError() after it. What am i missing?

Cheers,
Andy.

Re: How to get display properties?

Neville Franks16-Nov-03 9:59

Neville Franks

16-Nov-03 9:59

Andy Latham wrote:
I need to do this as well but for me the function returns zero and so does GetLastError() after it. What am i missing?

This doesn't make sense, unless maybe you aren't:

ncm.cbSize = sizeof(NONCLIENTMETRICS);

before calling SystemParametersInfo().

Neville Franks, Author of ED for Windows. Free Trial at www.getsoft.com

Detecting User Logon

Jonathan [Darka]13-Nov-03 0:15

Jonathan [Darka]

13-Nov-03 0:15

Hi all,

Does anyone know how to programmatically (from a Service) detect when a new user has logged on under Windows NT / 2000 / XP, etc.

regards,

Darka

Re: Detecting User Logon

David Crow13-Nov-03 4:05

David Crow

13-Nov-03 4:05

Search MSDN and the Internet for GINA. I believe that is what you are looking for.

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

CtreeCtrl

Member 42425912-Nov-03 23:54

Member 424259

12-Nov-03 23:54

Hello Friends,
I am Having a tree ctrl in a dialog box now when i set the checkbox property of the tree ctrl then there is a very Long Horizontal scroll bar at the bottom of the TreeCtrl. This scroll bar is very long even if the length of the string is small
Can anyone help me out in removing the scroll but i want the Vetical Scroll...

Thanx
TAKE CARE

Re: CtreeCtrl

valikac13-Nov-03 9:15

valikac

13-Nov-03 9:15

Check resource editor.

Kuphryn

Re: CtreeCtrl

Member 42425913-Nov-03 18:28

Member 424259

13-Nov-03 18:28

You have given me a very big Hint but i didnt get sorry...
If you can specify some details then it would be helpful for me to solve the problem..
awating reply

Thanx
TAKE CARE

Preferred size for memory block alloc?

Dominik Reichl12-Nov-03 22:58

Dominik Reichl

12-Nov-03 22:58

Hi!

in my program I often have to allocate and dellocate buffers for strings. For this, I thought I could avoid memory fragmentation by using an own memory allocation routine which will allocate some more bytes than needed, so many as needed to fill a full block.

What is the best size for such a "full" block?

Thanks in advance!
Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??
(doesn't work on NT)

Re: Preferred size for memory block alloc?

Anand Paranjpe12-Nov-03 23:49

Anand Paranjpe

12-Nov-03 23:49

If u r using string from STL, it gives facility of reserving memory space.
Read more on Function reserve().
This will suffice the need.

The chosen One Smile | :)

Re: Preferred size for memory block alloc?

Dominik Reichl13-Nov-03 1:16

Dominik Reichl

13-Nov-03 1:16

No, I am not using STL. I allocate the memory using 'new' and pointing with a char* to it.

Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??
(doesn't work on NT)

Re: Preferred size for memory block alloc?

David Crow13-Nov-03 4:17

David Crow

13-Nov-03 4:17

Would it be of any benefit to only allocate the memory once and just reuse it?

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Re: Preferred size for memory block alloc?

Dominik Reichl13-Nov-03 4:26

Dominik Reichl

13-Nov-03 4:26

The maximum size of a string is variable (it could just be one character or 2000 for example). Also there isn't any string number limit (only one string or more than 1000).

So I need to allocate them dynamically.

Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??
(doesn't work on NT)

Re: Preferred size for memory block alloc?

David Crow13-Nov-03 5:27

David Crow

13-Nov-03 5:27

That's fine. I was just trying to ascertain whether you could minimize the impact on the memory manager. One idea, which is how MFC's CString class works, is to only reallocate when necessary. Something like:

char *pBuffer;
int amount_currently_allocated = 0;
 
while (...)
{
    amount_needed = ???;
 
    if (amount_needed > amount_currently_allocated)
    {
        delete [] pBuffer;
        pBuffer = new char[amount_needed];
        amount_currently_allocated = amount_needed;
    }
 
    ...
}

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Re: Preferred size for memory block alloc?

Dominik Reichl13-Nov-03 7:33

Dominik Reichl

13-Nov-03 7:33

DavidCrow wrote:
Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

2 ???

Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??
(doesn't work on NT)

TCP Problem

graham the programmmer12-Nov-03 22:24

graham the programmmer

12-Nov-03 22:24

I have a problem with the net use /d cmd in NT, basically we have an application that runs a batch file to map a drive to a unix box on startup -

net use z: \\servername\sharename password username /persistent:no

the on close down it removes the mapping using -

net use z: /d

after this if I try to remap the drive I get the following error -

System error 1312 has occurred.

A specified logon session does not exist. It may already have
been terminated.

This seems to be caused by the fact that the TCP session is not closed by the net use /d, if I close it using a util called tcpview by systems internals I can then reconnect.

Does any one know of a utility that will let me close a TCP port from the cmd prompt, I have been trying to write one myself but although I can create a connection, list the TCP connections etc I can't seem to work out how to connect to and close an existing connection created by another process.

Any Ideas? i'm stuck.

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