C / C++ / MFC

Re: Reading .txt file on server

9-Feb-09 9:32

Mmm - not without some help on the server side, I suspect. HTTP's not really targeted at opening a file, updating it and closing it again.

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

David Crow9-Feb-09 10:00

David Crow

9-Feb-09 10:00

Do you have access to the file via a UNC path rather than HTTP? If not, then FTPing the file back and forth is likely going to be your only recourse.

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

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

ListBox focus

RomTibi9-Feb-09 6:52

9-Feb-09 6:52

I use a ListBox to show actions performed by the program. While running, the contents becomes greater than the frame of the ListBox. I don't know how to make the ListBox to show its last lines, in order to show the user the last actions performed by the program.

In VC++6, please...

36. When you surround an army, leave an outlet free.
...
Do not press a desperate foe too hard.

SUN-TZU - Art of War

BadJerry9-Feb-09 6:56

BadJerry

9-Feb-09 6:56

Use the message LB_SETTOPINDEX...
Hope thie helps!

RomTibi11-Feb-09 5:53

11-Feb-09 5:53

Thank you!

36. When you surround an army, leave an outlet free.
...
Do not press a desperate foe too hard.

SUN-TZU - Art of War

Perspx9-Feb-09 7:38

Perspx

9-Feb-09 7:38

Use the LB_SETTOPINDEX message (or the ListBox_SetTopIndex macro), or the LB_SETCURSEL message (or the ListBox_SetCurSel macro) if you want to select the item (LB_SETSEL to select multiple items) that has been added to the end of the list.

Regards,
--Perspx

"A refund for defective software might be nice, except it would bankrupt the entire software industry in the first year."
-Andrew Tanenbaum

"Einstein argued that there must be simplified explanations of nature, because God is not capricious or arbitrary. No such faith comforts the software engineer."
-Fred Brooks

RomTibi11-Feb-09 5:53

11-Feb-09 5:53

Thanks!

36. When you surround an army, leave an outlet free.
...
Do not press a desperate foe too hard.

SUN-TZU - Art of War

David Crow9-Feb-09 10:30

David Crow

9-Feb-09 10:30

Another option, although slightly less appealing, is to send the listbox a LB_INSERTSTRING message with 0 as the index.

RomTibi9-Feb-09 10:39

9-Feb-09 10:39

This will reverse the order of the messages?

36. When you surround an army, leave an outlet free.
...
Do not press a desperate foe too hard.

SUN-TZU - Art of War

David Crow9-Feb-09 10:40

David Crow

9-Feb-09 10:40

RomTibi wrote:
This will reverse the order of the messages?

Of course it will, hence my opening remark.

RomTibi11-Feb-09 5:54

reading floats in a struct

11-Feb-09 5:54

Thanks! I finally used your advice.

36. When you surround an army, leave an outlet free.
...
Do not press a desperate foe too hard.

SUN-TZU - Art of War

Jon Hulatt9-Feb-09 6:50

Jon Hulatt

9-Feb-09 6:50

Hi all,

I have a struct a bit like this, which is the header to a file on disk:-

struct Header
{
    short a;
    short b;
    short c;
    float floatvalue;
}

I read the header from the disk like this:-

ReadFile(hFile,&header,sizeof(Header),&bytesRead,NULL);

Once I'd done that, the values in a,b,c are as expected, but the floatvalue is not.

However, if I adjust the struct so that instead of float, I have BYTE[4] as follows:-

struct Header
{
    short a;
    short b;
    short c;
    BYTE floatvalue[4];
}

And then after reading the header as before, I do:-

float f;
memcpy(&f,header.floatvalue,sizeof(float));

Then f contains the value expected.

I don't understand why the first version didn't work. Can anyone enlighten me please?

Thanks

Jon

using System.Beer;

Re: reading floats in a struct

Code-o-mat9-Feb-09 7:18

Code-o-mat

9-Feb-09 7:18

Maybe take a look at this[^], i hope it explains what you need explained. Smile | :)

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: reading floats in a struct

Jon Hulatt9-Feb-09 7:51

Jon Hulatt

9-Feb-09 7:51

Thank for that, it's clear now.

Looks like a can get around the issue with #pragma pack (2)

using System.Beer;

Re: reading floats in a struct

RomTibi9-Feb-09 10:38

GetAdaptersInfo returns all the Ethernet Cards MAC

9-Feb-09 10:38

I think that a

#pragma pack (1)

#pragma pack (2)

declaration before the structure's definition would help. Think so?

36. When you surround an army, leave an outlet free.
...
Do not press a desperate foe too hard.

SUN-TZU - Art of War

spicy_kid20009-Feb-09 4:04

spicy_kid2000

9-Feb-09 4:04

Hello Team,

I have written a C++ program, which will fetch the MAC address using the GetAdaptersInfo, and this program is compiled using gcc of mingw. when i run this program in my PC, this has return valid MAC. Everything fine.

But When I run same program , where I had a wifi card and a LAN card, this program returend both the MAC address. In my program i am chacking for MIB_IF_TYPE_ETHERNET, still it is giving both the MAC.

How do i get only MAC of LAN card ? not wifi / bluetooth card?

Thank you
glamakid

Frown | :(

Re: GetAdaptersInfo returns all the Ethernet Cards MAC

Stuart Dootson9-Feb-09 4:25

Re: GetAdaptersInfo returns all the Ethernet Cards MAC

9-Feb-09 4:25

You could try using WMI[^] and retrieving <a href="http://msdn.microsoft.com/en-us/library/aa394216%28VS.85%29.aspx" rel="nofollow">Win32_NetworkAdapter</a>[^] instances whose AdapterType is Ethernet 802.3?

WMI at least separates out wireless adapters.

spicy_kid20009-Feb-09 4:51

spicy_kid2000

9-Feb-09 4:51

Hello

Thank you . Cant I use the GetAdapter...API itself? I am not good at usign WMI program

glamakid

Re: GetAdaptersInfo returns all the Ethernet Cards MAC

Stuart Dootson9-Feb-09 7:27

Re: GetAdaptersInfo returns all the Ethernet Cards MAC

9-Feb-09 7:27

The documentation and your experience indicate that you can't. I'm guessing that at that level of abstraction, WiFi is close enough to ethernet that they can be treated the same.

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

spicy_kid20009-Feb-09 19:02

spicy_kid2000

9-Feb-09 19:02

Hello Stuart,

I am getting both the adapter, but i want only the ethernet adapter. how can i supress the other one ?

Re: GetAdaptersInfo returns all the Ethernet Cards MAC

Stuart Dootson9-Feb-09 21:18