C / C++ / MFC

Best way to convert char to hex string representation?

30-Oct-09 0:40

Looks like the missing initialization didn't pass unnoticed... Big Grin | :-D

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Re: GDI+

Rajesh R Subramanian30-Oct-09 1:28

Rajesh R Subramanian

30-Oct-09 1:28

Hi,

Please mark the correct answers(s) that helped you by clicking "Good Answer". I've done it for you now.

“Follow your bliss.” – Joseph Campbell

yeah100029-Oct-09 23:22

yeah1000

29-Oct-09 23:22

Hi,
i would like to know the best way to convert a char (e.g 'c') to its hex string representation (i.e 63) in c++ and save it to a file as such.

Re: Best way to convert char to hex string representation?

CPallini29-Oct-09 23:31

Re: Best way to convert char to hex string representation?

29-Oct-09 23:31

fprintf(fp, "%02X ", 'c');

yeah100030-Oct-09 0:00

yeah1000

30-Oct-09 0:00

Thank you, but is there also a way to do it with ofstream or ostringstream?
So many streams are available, so confusing Smile | :)

Re: Best way to convert char to hex string representation?

CPallini30-Oct-09 0:11

Re: Best way to convert char to hex string representation?

30-Oct-09 0:11

Naturellement!

#include <fstream>

void main()
{
  std::ofstream os;
  os.open("foo.txt");
  os.unsetf(std::ios_base::dec);
  os.setf(std::ios_base::hex);
  os << (int) 'c' << std::endl;
  os.close();
}

yeah100030-Oct-09 0:17

yeah1000

30-Oct-09 0:17

Thanks again, another problem came up though. The character has reinterpret_cast<char*> in front of it and then the address of the vector element. The reinterpret_cast should to my opininon put the char in correct format, but it wont come out right Frown | :(

Re: Best way to convert char to hex string representation?

CPallini30-Oct-09 0:18

Differentiating SHUTDOWN & RESTART?

30-Oct-09 0:18

Could you please post sample code?
Smile | :)

Kushagra Tiwari29-Oct-09 23:20

29-Oct-09 23:20

Is there any way to differentiate programmatically which event is occuring i.e shutdown or restart after catching WM_QUERYENDSESSION??

Regards,
Kushagra

CPallini29-Oct-09 23:39

29-Oct-09 23:39

See the 'competitor' [^]. Big Grin | :-D

Kushagra Tiwari30-Oct-09 0:30

30-Oct-09 0:30

Thanks Sir,

It surely will help Smile | :)

Kushagra

David Crow30-Oct-09 3:31

David Crow

30-Oct-09 3:31

Kushagra Tiwari wrote:
It surely will help

Knowing how Windows was last shut down is helpful?

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

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Kushagra Tiwari30-Oct-09 3:41

30-Oct-09 3:41

DavidCrow wrote:
Knowing how Windows was last shut down is helpful?

Hi David,

Indeed it is helpful :

For eg:

User A pressed 'Restart' on the 'Shutdown Windows ' dialog. My application recieves WM_QUERYENDSESSION message and I return false (means I am temorarily delaying the shutdown) , but WM_QUERYENDSESSION never lets me differentiate between a 'Shutdown' & 'Restart'. Now, in this time after my application has completed its work it wants to continue with the operation that user chose then this registry value is one thing that lets me know whether the user tried 'Shutdown' or 'Restart', thus accordingly I can perform his desired operation Smile | :)

.

Regards
Kushagra
I hate coding but I luv to Develop

David Crow30-Oct-09 3:44

David Crow

30-Oct-09 3:44

Have you verified that the registry is updated with the 'restart' flag even though no restart was performed?

Kushagra Tiwari30-Oct-09 3:49

30-Oct-09 3:49

Yes david .. It works perfectly fine .. I have verified it just now Smile | :)

Kushagra Tiwari30-Oct-09 3:57

30-Oct-09 3:57

Did you try to cross verify it ??

David Crow30-Oct-09 3:59

David Crow

30-Oct-09 3:59

No, why would I?

Kushagra Tiwari30-Oct-09 4:07

Software is not getting fully installed inside a folder with name "," (comma). Some of the files are missing

30-Oct-09 4:07

I thought u must have tried it before, thats why u mast have asked the question of verifying.

Anyways , thanks for the help. Smile | :)

Kushagra

V K 229-Oct-09 22:14

V K 2

29-Oct-09 22:14

Hi,
Our software (our product) is not getting fully installed inside a folder with name "," (comma). I tried installing on a folder with name ";" (semi colon) then software got fully installed.

What could be the reason.

Thanks.

Re: Software is not getting fully installed inside a folder with name "," (comma). Some of the files are missing

CPallini29-Oct-09 22:26

Message Loop - CCmdTarget(urgent)

29-Oct-09 22:26

Well, the comma character is used as argument separator in many contexts (for instance in command line when running an application).
I would say it is not wise naming a folder that way. If you really need to deal with it then good luck.
Smile | :)

Hari_1629-Oct-09 20:08

Hari_16

29-Oct-09 20:08

Hi All,

Why is that classes derived from CCmdTarget can alone handle messages???

Any reasons...........

Thanks,
Hari

Adam Roderick J29-Oct-09 20:54

Adam Roderick J

29-Oct-09 20:54

Refer it to know why. [^]

Величие не Бога может быть недооценена.

Rajesh R Subramanian29-Oct-09 20:58

Rajesh R Subramanian

29-Oct-09 20:58

The very first line of the documentation for this class says:

CCmdTarget is the base class for the Microsoft Foundation Class Library message-map architecture. Documentation could actually be useful, you know?

“Follow your bliss.” – Joseph Campbell

Hari_1629-Oct-09 21:19

Hari_16

29-Oct-09 21:19

Thks for the info

CPallini29-Oct-09 22:34