C / C++ / MFC

20-Sep-04 10:25

You probably still have a prototype at the top of main.cpp. If that is the case, delete the prototype and replace it with a #include statement instead.

You'll then need to modify the .h file so that it gets included only once. Check out the .h files that ClassWizard produces to see the directives that are used.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Please explain this.

V.20-Sep-04 5:29

20-Sep-04 5:29

Hi,

I used next code:

<br />
			if(labMask.hideemptyrows == true){<br />
				mc_hideemptyrows.SetCheck(BST_CHECKED);<br />
				OnCheckHideemptyrows();<br />
			}									//end if<br />
			else{<br />
				mc_hideemptyrows.SetCheck(BST_UNCHECKED);<br />
			}									//end else<br />

strange thing is: when labMask.hideemptyrows = true, the "else" statement is performed !!!
if I do this:
if(labMask.hideemptyrows){ ... }
then it works fine.

Can anyone tell me why this is?

tnx.

(oh btw labMask.hideemptyrows is of type bool)

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix

David Crow20-Sep-04 5:33

20-Sep-04 5:33

What type is hideemptyrows? Using a breakpoint at the if(...) statement, what value does it have?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

BlackDice20-Sep-04 6:11

BlackDice

20-Sep-04 6:11

I had the same problem a couple of weeks ago, and finally realized that I was stepping through the code in 'Release' mode. So the values it was giving me weren't correct. You may not be doing the same thing, but just to make sure, check and see if you're in debug mode while stepping through.

[insert witty comment here]

bdiamond Sleepy | :zzz:

David Crow20-Sep-04 6:16

20-Sep-04 6:16

Nice suggestion, but you might want to reply to V. so that he is sure to see it.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Michael Dunn20-Sep-04 10:54

Michael Dunn

20-Sep-04 10:54

Never ever compare for equality with true or TRUE. Always do if (labMask.hideemptyrows). The reason is that, even with a bool variable, there's nothing stopping the variable from getting values other than 0 or 1. When you compare against true, the test will fail if the bool got some value other than 1.

--Mike--
Personal stuff:: Ericahist | Homepage
Shareware stuff:: 1ClickPicGrabber | RightClick-Encrypt
CP stuff:: CP SearchBar v2.0.2 | C++ Forum FAQ
----
I just performed the Heimlich Maneuver on SQL #1.
-- Chris Maunder

V.20-Sep-04 21:06

20-Sep-04 21:06

Tnx for your reply.

However I do not agree on this one:
1. a BOOL is an "Integer", a bool a "Boolean" (true or false)
so it can't get another value then true or false. Can it?
2. even after casting (bool)labMask.hideemptyrows the if statement returned false (we saw it in the quickwatch window)
3. although I see your point (especially for BOOLs) I find it more readable to compare against true or false (you see instandly what type your variable is)

So idd if the bool class can have other values then true or false I see your point, but why use the bool and not the BOOL? (surely not memory?)

Personally I think the compiler is broken or something Smile | :)

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix

overriding a control's virtual functions

RChin21-Sep-04 1:00

RChin

21-Sep-04 1:00

V. wrote:
Personally I think the compiler is broken or something

..and that might just be it! I have had many a few hairy moments where the code being executed doesn't match the fragment being shown on the screen. A good cleanup and complete rebuild of the project should solve this.
If that doesn't work, then a good thumping of the PC should teach it to behave!

I Dream of Absolute Zero

BlackDice20-Sep-04 4:09

BlackDice

20-Sep-04 4:09

I'm using Chris Maunder's MFC Grid control in a personal project and I'd like to override a virtual function:

virtual void OnFixedColumnClick(CCellID& cell);

I've made a derived class and everything seems to be working right except that I want to override that function so that I can set a different compare function if the column clicked is the one that has dates in it. None of the virtual functions show up in classwizard, and I'm trying to figure out if I do it manually, how to put this in the message map so that I can get this message. I know this is something that I should know how to do, but some days I'm dumber than others. Any help is appreciated. Thanks in advance!!!

[insert witty comment here]

bdiamond Sleepy | :zzz:

Re: overriding a control's virtual functions

Maximilien20-Sep-04 4:14

Maximilien

20-Sep-04 4:14

you simply redefine the method in your new class.

something like :

clas YourClass
{
...
  virtual void OnFixedColumnClick(CCellID& cell);
}
...

void YourClass::OnFixedColumnClick(CCellID& cell)
{
 // do something
 ChrisMaunderGridBaseClass::OnFixedColumnClick(cell);
}

Maximilien Lincourt
Your Head A Splode - Strong Bad

RESOLVED

BlackDice20-Sep-04 4:55

BlackDice

20-Sep-04 4:55

I got it, what you said is exactly what I was doing, which was right. Except I should have been looking for OnFixedRowClick(), not OnFixedColumnClick(). Thanks

[insert witty comment here]

bdiamond Sleepy | :zzz:

Mac Address

shiraztk20-Sep-04 4:00

20-Sep-04 4:00

Hi
My computer is on LAN. I know my IP address. How can I get the corresponding MAC address, to which the particular IP is bound to ? ( if I have more than one ethernet card)

I have tried Netbios, GetAdaptersInfo etc.

Is there any solution for this, something similar to GetAdaptersInfo which will work in windows NT also. ?

Thanks in advance
Shiraz

The Best Relligion is Science.
Once you understand it, you will know God.

David Crow20-Sep-04 5:22

20-Sep-04 5:22

zainu wrote:
I have tried Netbios, GetAdaptersInfo etc.

These are the normal solutions. Are you saying they do not work for you?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Antony M Kancidrowski20-Sep-04 5:45

Antony M Kancidrowski

20-Sep-04 5:45

Have you tried going through the ARP table using GetIpNetTable()?

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

shiraztk20-Sep-04 7:31

20-Sep-04 7:31

Hi,

Thankyou all..
I tried these methods..all the three, netbios, GetIpNetTable(), GetAdapterInfo().
These are the problems I am facing:-
Netbios: I am not able to find MAC if there are more than one LAN card and multiple IP set for each card.
GetIpNetTable: Doesnt give me the particular MAC address of a IP Address.
GetAdapterInfo: Not supported in Windows NT

Is there anything Like GetAdapterInfo that will work in all windows platform ?

Thanks in advance
Shiraz

The Best Relligion is Science.
Once you understand it, you will know God.

cmk20-Sep-04 8:23

cmk

20-Sep-04 8:23

For all platforms, port a version of :

http://www.odyniec.fdns.net/arpr.c[^]

...cmk

Save the whales - collect the whole set

shiraztk20-Sep-04 17:49

20-Sep-04 17:49

Hi
Thankyou cmk. I will have a look at it.

Regards
Shiraz

The Best Relligion is Science.
Once you understand it, you will know God.

Alpha Siera20-Sep-04 18:38

Alpha Siera

20-Sep-04 18:38

Hi,

It's here what you need

#include <windows.h>
#include <wincon.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>

typedef struct _ASTAT_
{

ADAPTER_STATUS adapt;
NAME_BUFFER NameBuff [30];

}ASTAT, * PASTAT;

ASTAT Adapter;

void main (void)
{
NCB Ncb;
UCHAR uRetCode;
char NetName[50];
LANA_ENUM lenum;
int i;

memset( &Ncb, 0, sizeof(Ncb) );
Ncb.ncb_command = NCBENUM;
Ncb.ncb_buffer = (UCHAR *)&lenum;
Ncb.ncb_length = sizeof(lenum);
uRetCode = Netbios( &Ncb );
printf( "The NCBENUM return code is: 0x%x \n", uRetCode );

for(i=0; i < lenum.length ;i++)
{
memset( &Ncb, 0, sizeof(Ncb) );
Ncb.ncb_command = NCBRESET;
Ncb.ncb_lana_num = lenum.lana[i];

uRetCode = Netbios( &Ncb );
printf( "The NCBRESET on LANA %d return code is: 0x%x \n",
lenum.lana[i], uRetCode );

memset( &Ncb, 0, sizeof (Ncb) );
Ncb.ncb_command = NCBASTAT;
Ncb.ncb_lana_num = lenum.lana[i];

strcpy((char*)Ncb.ncb_callname, "* " );

Ncb.ncb_buffer = (unsigned char *) &Adapter;
Ncb.ncb_length = sizeof(Adapter);

uRetCode = Netbios( &Ncb );
printf( "The NCBASTAT on LANA %d return code is: 0x%x \n",
lenum.lana[i], uRetCode );
if ( uRetCode == 0 )
{
printf( "The Ethernet Number on LANA %d is: %02x%02x%02x%02x%02x%02x\n",
lenum.lana[i],
Adapter.adapt.adapter_address[0],
Adapter.adapt.adapter_address[1],
Adapter.adapt.adapter_address[2],
Adapter.adapt.adapter_address[3],
Adapter.adapt.adapter_address[4],
Adapter.adapt.adapter_address[5]);
}
}

}

Regards
Alpha

Alpha Siera20-Sep-04 18:41

Alpha Siera

20-Sep-04 18:41

Sorry ,

Link with Netapi32.lib

the include files are missed bcz of HTML tag

they are

#include windows.h
#include wincon.h
#include stdlib.h
#include stdio.h
#include time.h

Regards
Alpha

shiraztk20-Sep-04 20:08

20-Sep-04 20:08

Hi all

Thankyou very much.
The above method works for me.!

Regards
Shiraz

The Best Relligion is Science.
Once you understand it, you will know God.

Alpha Siera20-Sep-04 21:46

Alpha Siera

20-Sep-04 21:46

Any time buddy Smile | :)

Keep in touch

Regards
Alpha