C / C++ / MFC Discussion Boards

bosfan15-Dec-08 4:21

15-Dec-08 4:21

Hello community,
how can i retrieve current network capacity, is there any function for this problem!
Like in task manager the tab Network!

Thanks for any help!
best regards
termal

Re: Retriving current network capacity?

David Crow15-Dec-08 7:38

David Crow

15-Dec-08 7:38

termal wrote:
how can i retrieve current network capacity...

Link speed?

"Love people and use things, not love things and use people." - Unknown

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

Re: Retriving current network capacity?

bosfan15-Dec-08 21:30

bosfan

15-Dec-08 21:30

Hello,
thanks for answer, for example, i have a 100MBit/s card in my pc, can i read this value from system?
When i make right click on the task bar, i can show me a task manager with current running processes,
one of the tab show the network:
Adapter name, network capacity, transfer rate and status,this values i like to read!
Here i need help if possible!!

thanks for any help!
termal

Re: Retriving current network capacity?

David Crow16-Dec-08 3:17

David Crow

16-Dec-08 3:17

I was going to suggest the Win32_NetworkAdapter WMI class, but the MaxSpeed property is optional.

Using PDH, I successfully queryied the Current Bandwidth counter of the Network Interface object. Give that a go and see if it meets your needs.

"Love people and use things, not love things and use people." - Unknown

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

Re: Retriving current network capacity?

bosfan16-Dec-08 4:06

bosfan

16-Dec-08 4:06

Hello,
i try to solve my problem with your info!
Thank you very much for help!

best regards
termal

CDC class

staticv15-Dec-08 4:00

staticv

15-Dec-08 4:00

Why do we use a pointer to a Device context ?

CDC* pDC

I'm learning from a book and it doesn't tells why he is using a pointer rather than a simple variable

Top Web Hosting Providers[^]

Whatever the mind can conceive and believe, the mind can achieve - Dr. Napoleon Hill

Re: CDC class

Alan Balkany15-Dec-08 4:13

Alan Balkany

15-Dec-08 4:13

A pointer can be passed more easily than a large structure, and a CDC* is the convention used by MFC when invoking OnDraw () handlers.

Re: CDC class

staticv15-Dec-08 4:19

staticv

15-Dec-08 4:19

Nothing else? Are there any more benefits using it? I guess not.

Thanks

Top Web Hosting Providers[^]

Whatever the mind can conceive and believe, the mind can achieve - Dr. Napoleon Hill

Re: CDC class

Alan Balkany15-Dec-08 4:23

Alan Balkany

15-Dec-08 4:23

What more do you want? It gives you full access to the MFC drawing capabilities. (Have you ever tried to implement your own line-drawing routine?)

Re: CDC class

Sarath C15-Dec-08 4:39

Sarath C

15-Dec-08 4:39

It's actually calling CWnd::GetDC() function which wraps the the following code

ASSERT(::IsWindow(m_hWnd));
return CDC::FromHandle(::GetDC(m_hWnd));

The FromHandle creates a new DC object in the Handle Map[^]. You will have to call CDC::ReleaseDC to release the DC acquired using GetDC. The object will be cleaned up on MFC Idle processing[^]

-Sarath.
"Great hopes make everything great possible" - Benjamin Franklin

My blog - Sharing My Thoughts

Re: CDC class

Luc Pattyn15-Dec-08 4:40

Luc Pattyn

15-Dec-08 4:40

manzoor10 wrote:
Nothing else?

when you need something from the Internet, do you prefer Google's URL, or do you want FedEx to bring you a "few" truckloads of DVDs holding a copy of the billions of available web pages?

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Fixturized forever. Confused | :confused:

Re: CDC class

CPallini15-Dec-08 5:52

CPallini

15-Dec-08 5:52

I've just this link
http://www.federalreserve.gov/[^]
please send me content (plz plz sir urgent plz plz).
Big Grin | :-D

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]

Re: CDC class

CPallini15-Dec-08 5:47

CPallini

15-Dec-08 5:47

manzoor10 wrote:
Nothing else?

free beer, doughnuts, ...
Poke tongue | ;-P

Re: CDC class

Stuart Dootson15-Dec-08 13:44

Stuart Dootson

15-Dec-08 13:44

In this case, it also enables polymorphism, so that you can use pointers to objects whose type is a sub-type of CDC, such as CPrinterDC. CDC is a general device context wrapper, while CPrinterDC is specific to printers. This means that the same code can be used for any device context type.

Re: CDC class

CPallini15-Dec-08 5:33

CPallini

15-Dec-08 5:33

There are several (general) reasons to use pointers (in some circumstaces), all covered by a good C++ book.
Smile | :)

Re: CDC class

PJ Arends15-Dec-08 8:31

PJ Arends

15-Dec-08 8:31

For the same reason we use pointers anywhere else.

A pointer gives us access to the original data object, which can be huge, while using a simple variable means we have access to a local copy of the object, which involves copying all the data over, and any changes made to the local object are not reflected back to the original. We could of course use a reference to the original, but then that would remove the possibility of passing a NULL value.

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

Within you lies the power for good - Use it!

File OPEN dialog box create problem....

m_mun15-Dec-08 3:39

m_mun

15-Dec-08 3:39

Hallo,
I have open a text file using file OPEN dialog menu, and i store the path using GetPathName(). File may choose from anywhere. Then I want to write something into a .txt file in my project directory when I open it ( MFC Application ). For this I have used fopen(".\\ProjectDireectory\\Temp.txt", "w"). It cant find the 'ProjectDirectory'. Programe stores the path from where i select the file for open.
I can not give the specic path because I dont know where it will stored.

Thanks.

Re: File OPEN dialog box create problem....

CPallini15-Dec-08 3:51

CPallini

15-Dec-08 3:51

Could you please explain more clearly what are your requirements?
Smile | :)

Re: File OPEN dialog box create problem....

m_mun15-Dec-08 4:01

m_mun

15-Dec-08 4:01

Actually i want to open a file from any directory and parallely i want to write a file in my Project directory(Exe directory). This directory may be anywhere in the disk. I want using '. notation' to write the file as because i dont know where the exe installed. I have given the example.

Re: File OPEN dialog box create problem....

CPallini15-Dec-08 5:34

CPallini

15-Dec-08 5:34

Does GetModuleFilename fit your needs?

Re: File OPEN dialog box create problem....

PJ Arends15-Dec-08 8:42

PJ Arends

15-Dec-08 8:42

Also take a look at SHGetFolderPath(). Writing to files in the install directory can be problematic. (access rights and such)

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

Within you lies the power for good - Use it!

Re: File OPEN dialog box create problem....

CPallini15-Dec-08 9:24

CPallini

15-Dec-08 9:24

OK, I'll take a look: Who knows? someday maybe it will be useful... Roll eyes | :rolleyes:

get the double clicked item in ListBox

AnithaSubramani15-Dec-08 2:32

AnithaSubramani

15-Dec-08 2:32

Hi All,

I need to get the item,which is double clicked in ListBox.I need sample code.

Thanks & Regards,

Anitha

Re: get the double clicked item in ListBox

David Crow15-Dec-08 3:03

David Crow

15-Dec-08 3:03

Handle the LBN_DBLCLK notification.

"Love people and use things, not love things and use people." - Unknown

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

Re: get the double clicked item in ListBox

CPallini15-Dec-08 3:19

CPallini

15-Dec-08 3:19

AnithaSubramani wrote:
I need sample code.

Documentation [^] isn't enough?
Smile | :)

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