Grid Control Questions - C / C++ / MFC Discussion Boards

Re: Active scan on a WiFi NIC, including flush of old scan results - how ? Pin

amitalonm5-Oct-09 10:58

5-Oct-09 10:58

I don't think that it will help.

According to the documentation the Wireless card will return it's most up to date database, without flushing old information.

The data may have been collected using passive scan or any other action that the card's driver was doing to collect, before the _LIST query (command) was issued.

Re: Active scan on a WiFi NIC, including flush of old scan results - how ? Pin

fibers21-Dec-09 16:45

fibers

21-Dec-09 16:45

Hi:
I also got the confusion with this question, when I want collect each AP's RSSI real-time.
quote:
The miniport driver must manage its cached BSSID scan list in the following ways:
The driver must clear its BSSID scan list when set by OID_802_11_BSSID_LIST_SCAN
before it starts the explicit network scan.

Because we use the OID in the upper layer of the system. The Application just pass down the OID to the under miniport driver. It seems that the driver will do the clear things for us. The actual implement of the hardware is variety, so it is unforeseen.

Re: Active scan on a WiFi NIC, including flush of old scan results - how ? Pin

amitalonm23-Dec-09 2:13

amitalonm

23-Dec-09 2:13

Hi Fibers,

here are my understandings about this issue:
1. The fastest promised "response time" for updated information that you can get using NDIS API will be around 6 seconds.

2. If you need faster response time then this - you need to work wuth wireless NIC's drivers.

3. In order to check yourself, you may do some tests and from time to time switch the power of the transmitting AP on/off. when you switch it off - you will know exactly when the reading of the relevant AP should vanish from the list.
according to my tests, I could not make them disappear fast, i.e. the reading of the AP that is no longer on air, kept reporting as if it was on air, sometimes for about 1-2 minutes (!!!) after the AP was turned off. the rx database was not flushed and held old information.
This, of course, is not what I wanted.
The scan command, which should have flush the RXed AP's database, surely did not work.

I think that this problem is due to incompatibility of the Wireless card's vendors with NDIS requirements.

If you find any wireless card (NIC) that the NDIS SCAN command actually cleans the old data from the database, using NDIS interface, please inform me with the exact model of the wireless NIC.

If you find any wireless NIC that you can access it's Firmware and control it using your code (bypass the NDIS level), and that can do it with no cost (no need to pay for information on how to do this), please update me as well with the wireless card's model and brand, and with relevant sample code.
As a matter of fact, I think that in order to achieve fast response, this is that direction that you should focus on.

Any help will be very much appreciated !

In second thought, please update us anyway Smile | :)

Thanks a lot and good luck.
-- Amit.

[Message Deleted]

Infinite1UP4-Oct-09 2:52

Infinite1UP

4-Oct-09 2:52

[Message Deleted]

Re: File Path Error Message - VC++ 6 & wxWidgets

Richard MacCutchan4-Oct-09 4:38

Richard MacCutchan

4-Oct-09 4:38

Infinite1UP wrote:
I either want to resolve this error or just suppress the error message since it doesn't provide any useful information.

The dialog message clearly states that it cannot find the file in question and thus the program cannot continue. You have also obliterated part of the directory path on your picture so it is not possible to tell if there is something else wrong with the path. You should use the debugger to trace through your program until you get to the point at which it tries to open the file and then check both the path that you are trying to open, and the path where the file is stored.

Re: File Path Error Message - VC++ 6 & wxWidgets

Infinite1UP4-Oct-09 15:17

Infinite1UP

4-Oct-09 15:17

The program completes the extraction from the RGSSAD archive with no trouble, the error message doesn't appear until all the files in the archive are extracted, that's why the message is useless. There is nothing wrong with the path as the files that it says aren't there are indeed present and intact at that location.

If the code looks okay then I'm really stumped.

modified on Sunday, October 4, 2009 9:27 PM

Re: File Path Error Message - VC++ 6 & wxWidgets

Richard MacCutchan4-Oct-09 22:23

Richard MacCutchan

4-Oct-09 22:23

Infinite1UP wrote:
There is nothing wrong with the path as the files that it says aren't there are indeed present and intact at that location.

Logically thinking, this is not possible, so we need to consider why the program is throwing this error. The only thing that I can think of is that the path being used to access the file is somehow incorrect, but the path put into the message is the correct path of the actual file. I can only suggest that you step through the program with the debugger until you get to the point of failure (or set a breakpoint at that line) and check the values of all the relevant variables to see what is going on.

Grid Control Questions

tsjcs4-Oct-09 1:34

tsjcs

4-Oct-09 1:34

I'm new to MFC and I'm trying to get the grid control to work in a very basic fashion. I really headed down this path because I wanted a better multi-column listbox than it seemed that MFC supported. I probably don't need a Y-axis set of buttons (vertical column 0) but I do need column header buttons that can be used for sorting the rows etc. The demo program does more than I need. I tried to create a custom control on a new form and display a simple grid control and it is failing.

Q. Can the grid control be configured to not display the y-axis buttons?

Q. Does anybody have source-code for a more simple multi-column listbox example using this grid-control like I am describing?

Thanks!

Re: Grid Control Questions

Rolf Kristensen4-Oct-09 22:12

Rolf Kristensen

4-Oct-09 22:12

Seems like you should just use a CListCtrl

You can find a lot here:
http://www.codeproject.com/KB/list/[^]

You might want to take a look at:
* CQuickList[^]
* Another Report List Control[^]
* CListCtrlEx[^]
* CGridListCtrlEx - Grid Control Based on CListCtrl[^] (My own)

Re: Grid Control Questions

kilt8-Oct-09 23:47

kilt

8-Oct-09 23:47

Use rather native Win32 Grid controls, mainly undocumented ones which can do everything... with a few lines of code

exe not works on Vista 32 bit

Aabid3-Oct-09 22:15

Aabid

3-Oct-09 22:15

hello friends

i made an application, it works fine in all OS`s except vista 32 bit.
i believe i am missing some macro and i don`t know what macro i should define in order to run my application on vista

Any suggestion is greatly appreciated

Thanks

Re: exe not works on Vista 32 bit

Michael Schubert3-Oct-09 23:39

Michael Schubert

3-Oct-09 23:39

Aabid wrote:
Any suggestion is greatly appreciated

I suggest you consult a mind reader.

Re: exe not works on Vista 32 bit

Aabid4-Oct-09 0:25

Aabid

4-Oct-09 0:25

have u consulted Michael Schubert

Re: exe not works on Vista 32 bit

Richard MacCutchan4-Oct-09 1:33

Richard MacCutchan

4-Oct-09 1:33

Michael is saying that we have no idea what your problem is. All you have told us is that your program does not work; and yet you seem to think we might know how to fix it.

Re: exe not works on Vista 32 bit

Michael Schubert4-Oct-09 2:15

Michael Schubert

4-Oct-09 2:15

Hm, yeah. I did not think of the possibility that he might not get the hint.

Re: exe not works on Vista 32 bit

Rolf Kristensen4-Oct-09 12:32

Rolf Kristensen

4-Oct-09 12:32

Try to use the Standard User Analyzer[^] tool. Part of the Microsoft Application Compatibility Toolkit[^].

Help for an opensource flight simulator [modified]

Stephane-M3-Oct-09 21:54

Stephane-M

3-Oct-09 21:54

Hello,
we are looking for people who will be able to help us voluntarily to develop in C++ an opensource flight simulator (called FlyLegacy) which will run under Windows, Linux and Mac OS.
http://flylegacy.cvs.sourceforge.net/viewvc/flylegacy/

Here are two screenshots showing the progress of the project:
http://fly.simvol.org/images-forum/Cessna_Legacy_5s.jpg
http://img471.imageshack.us/img471/8800/flylegacyl017bp.jpg

If you are interested by the project, please contact jean-sabatier@wanadoo.fr or post a message on our forum on http://forum.simvol.org.
Feel free to ask me questions if you want more details.
Thank you for your attention.

modified on Monday, October 5, 2009 2:42 PM

Re: Help for an opensource flight simulator

CPallini4-Oct-09 0:21

CPallini

4-Oct-09 0:21

You should post it in the Collaboration / Testing [^] forum.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

How to develop a Peer-to-Peer networking conference through Windows Peer-to-Peer SDK?

lktse3-Oct-09 17:09

lktse

3-Oct-09 17:09

Hi,Here is the question:
How to develop a Peer-to-Peer networking conference through Windows Peer-to-Peer SDK?
I know that through Microsoft's Windows Peer-to-Peer SDK we can develop the Peer-to-Peer applications convenient.But in the Windows Peer-to-Peer SDK's help book,it just said that the Peer-to-Peer Infrastructure does not support audio or video streaming.So developing Peer-to-Peer networking conference with PNRP is a little difficult.
I also know the WCF in the Microsoft's vista OS provide a strong support about developing P2P applications,So how can I do with it in VC++?
I just want to develop a pure Peer-to-Peer networking conference in VC++.Can anyone else help me?
Thank you very much~~~

lktse
dbs-soft,Inc.

Re: How to develop a Peer-to-Peer networking conference through Windows Peer-to-Peer SDK? [modified]

Moak5-Oct-09 0:47

Moak

5-Oct-09 0:47

Hi here are some answers to this text:

lktse wrote:
I know that through Microsoft's Windows Peer-to-Peer SDK we can develop the Peer-to-Peer applications convenient.But in the Windows Peer-to-Peer SDK's help book,it just said that the Peer-to-Peer Infrastructure does not support audio or video streaming.So developing Peer-to-Peer networking conference with PNRP is a little difficult.
I also know the WCF in the Microsoft's vista OS provide a strong support about developing P2P applications,So how can I do with it in VC++?

* when alternative "a" does not provide the wanted solution we should look for more alternatives, also see here
* when developing a complex networking product it's advised to brake problems into smaller ones, it helps us answering
* when we are in a C++ forum we are asked to make specific C++ questions, did you read this?

It looks like you are looking for a system architect. Smile | :)

Webchat in Europe Java | [Coffee]

(only 4K)

How can I get rid of Scrollbar? [modified]

transoft3-Oct-09 8:03

transoft

3-Oct-09 8:03

Hi
I just changed my software (MDI application) View's parent class from CScrollView to CView. I am expecting the Scrollbar disappear.

But I can still see them. What is the reason for this?

Thanks,

modified on Saturday, October 3, 2009 3:11 PM

Re: How can I get rid of Scrollbar?

Iain Clarke, Warrior Programmer3-Oct-09 9:27

Iain Clarke, Warrior Programmer

3-Oct-09 9:27

I'm not sure without digging.

But I'd suggest making two new projects. One with a view inheriting from CScrollView, and one with a view inheriting directly from CScrollView.

Compare, see any differences, enjoy!

Iain.

I have now moved to Sweden for love (awwww).
If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), or need contract work done, give me a job! http://cv.imcsoft.co.uk/[^]

Re: How can I get rid of Scrollbar?

Iain Clarke, Warrior Programmer3-Oct-09 9:32

Iain Clarke, Warrior Programmer

3-Oct-09 9:32

In addition, look through your view class (particularly OnInitialUpdate) for a EnableScrollBar command.

Iain.

Re: How can I get rid of Scrollbar?

PJ Arends3-Oct-09 10:00

PJ Arends

3-Oct-09 10:00

You have to remove the WS_HSCROLL and WS_VSCROLL styles from the window.

You may be right
I may be crazy
-- Billy Joel --

Within you lies the power for good - Use it!

Re: How can I get rid of Scrollbar?

transoft3-Oct-09 10:13

transoft

3-Oct-09 10:13

Please tell me how to do that.

I tried following but without luck

BOOL CMyView::PreCreateWindow(CREATESTRUCT& cs)
{
	ASSERT(cs.style & WS_CHILD);

	cs.dwExStyle &= ~WS_VSCROLL;
	cs.dwExStyle &= ~WS_HSCROLL;

	if (cs.lpszClass == NULL)
		cs.lpszClass = AfxRegisterWndClass(CS_DBLCLKS);

    return CView::PreCreateWindow(cs);  
}

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