C / C++ / MFC

George_George21-Aug-07 20:51

George_George

21-Aug-07 20:51

Hi Paresh,

I have read that reply. In my situation, I invoke CreateDirectoryA directly, but why there is an unresolved link error?

I think even if UNICODE is not defined, I could invoke CreateDirectoryA directly, right?

regards,
George

Paresh Chitte21-Aug-07 22:05

Paresh Chitte

21-Aug-07 22:05

Linker could not find the definition of CreateDirectoryA, could not locate the correct library. It could be because of VS2005 installation (UNICODE support).

Please refer below threads,
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=673882&SiteID=1[^]
http://forums.microsoft.com/msdn/showpost.aspx?postid=673882&siteid=1&sb=0&d=1&at=7&ft=11&tf=0&pageid=1[^]

Regards,
Paresh.

George_George21-Aug-07 22:23

George_George

21-Aug-07 22:23

Thanks Paresh,

I suspect there is no implementation from Microsoft of CreateDirectoryA on Windows CE platform.

regards,
George

David Crow22-Aug-07 2:30

David Crow

22-Aug-07 2:30

George_George wrote:
error LNK2019: unresolved external symbol CreateDirectoryA referenced in function foo

This is because you do not have Unicode defined.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

George_George22-Aug-07 3:16

George_George

22-Aug-07 3:16

Yes David,

I have not defined UNICODE. But if I do not define UNICODE, CreateDirectoryA should be linked. Why there is unresolved symbol error? Microsoft does not have the implementation for CreateDirectoryA for Windows CE?

regards,
George

Encoder

celllllllll21-Aug-07 12:08

21-Aug-07 12:08

Hi,

I would really appreciate if anyone could help me with a project in which I want to write code for encoder. Can you guys help that what do I need for it?

I will be very much helped.
Thanks

C++Prog

celllllllll21-Aug-07 12:27

21-Aug-07 12:27

I want to know what do I need for starting up this project. If you guys can give me your ideas, all will be very much appreciated.

Thanks again

C++Prog

cp987621-Aug-07 13:29

cp9876

21-Aug-07 13:29

SHJDU UYSJD DIFGD KJDDP DNDIF DDEEK JUFUD UDIKS UUDEP UIMHQ SUJDO SUBAF

Peter
"Until the invention of the computer, the machine gun was the device that enabled humans to make the most mistakes in the smallest amount of time."

El Corazon21-Aug-07 13:48

El Corazon

21-Aug-07 13:48

celllllllll wrote:
Can you guys help that what do I need for it?

start with IPO: Input, Process, Output.

what do you want to encode?
how do you want to encode it?
what purpose do you want the output to fulfill?

encoding is changing one thing to another:
compression is a form of encoding to save space.
ecryption is a form of encoding to hide the output from undesirables.
serialization is a form of encoding to transfer a binary object as text
etc.

So simply asking for help in encoding, help me now, please, won't get you far. Start by defining the problem, define it well. Once you can define it, you start breaking it down to its parts. IPO is an archaic method, but it still works especially for new programmers. Break it down into sub groups of functional parts, each with an IPO definition, each does only their small part. Put it all together, and you have a program.

BUT, first you have to start by defining it.

_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)

celllllllll21-Aug-07 14:33

21-Aug-07 14:33

Thanks for such an inspirational answer. I really appreciate it.

I want to encode a video using Visual Studio C++. I want to get a compressed video as an output.
How do I start breaking it in parts? Do you mean should I start writing what I need to input, then process and then finally output?

I really appreciate the help.Thanks very much.

C++Prog

El Corazon21-Aug-07 15:03

El Corazon

21-Aug-07 15:03

celllllllll wrote:
How do I start breaking it in parts? Do you mean should I start writing what I need to input, then process and then finally output?

have you got the video to input? if not, you start there, how do you get the video.
Once you have everything needed to get the video into the design, then you need to compress it.
Do you want industry standard compression? do you want to use 3rd party libraries to do the compression for you? do you want to write your own compression? Is it for archival? Is it for streaming videos across the network? do you need high compression over low-latency? The questions just keep adding up. You answer them, figure out what you need to do that and move on to the next.

Are you writing the display? DirectX? OpenGL? (someone else here is doing video to texture -- you two might help each other).

there are libraries to do video compression, but that may not be what you need.

_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)

Stephen Hewitt21-Aug-07 14:35

Stephen Hewitt

21-Aug-07 14:35

Your question is a little vague; an encoder of what?

Steve

celllllllll21-Aug-07 14:39

21-Aug-07 14:39

I want to encode a video file.

C++Prog

Help With Dialog Based App

Maximilien21-Aug-07 15:16

Maximilien

21-Aug-07 15:16

encode a video to do what ?

Maximilien Lincourt
Your Head A Splode - Strong Bad

simoncoul21-Aug-07 8:41

simoncoul

21-Aug-07 8:41

I have made a dialog based MFC app but found a big problem. If someone is entering values into the edit boxes and then hits enter it closes the program. If you hit enter at all while the program is running and in focus it will end the program. How can I fix this?

Thanks

Mark Salsbery21-Aug-07 8:43

Mark Salsbery

21-Aug-07 8:43

You can override OnOK() (and possibly OnCancel()) and in your overridden method,
do nothing.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

simoncoul21-Aug-07 9:00

simoncoul

21-Aug-07 9:00

Hi I cannot find those functions anywhere. I have this

CDLIADlg dlg;

	m_pMainWnd = &dlg;
	//Brings up main dialog box
	INT_PTR nResponse = dlg.DoModal();
	//Ends program
	return FALSE;

Brings up the main dialog, but I can't find the OnOk or OnCancel in the main dialog

Mark Salsbery21-Aug-07 9:17

Mark Salsbery

21-Aug-07 9:17

They are virtual functions declared in the CDialog class. You can
add them through the class properties window or add them by hand

virtual void OnOK();
virtual void OnCancel();

...
void CDLIADlg::OnOK()
{
}

void CDLIADlg::OnCancel()
{
}

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

simoncoul21-Aug-07 9:27

simoncoul

21-Aug-07 9:27

Thanks so much problem is solved added them by hand much quicker!

Thanks again!