Re: how to create a folder automatically - C / C++ / MFC Discussion Boards

ramyasangeet15-May-06 20:17

15-May-06 20:17

hi all,

I have a video Player.Everytime the video player open and plays a video file,the corresponding files should be stored in folder.

1.how can i create a folder automatically.
If i give Filename=c:\\Folder1,I got error.

Please help me

cheers

sangeet

Re: how to create a folder automatically

Cedric Moonen15-May-06 20:30

Cedric Moonen

15-May-06 20:30

ramyasangeet wrote:
If i give Filename=c:\\Folder1,I got error.

That's not very clear. What are you doing with Filename, post some code ('If I give' is quite vague). And what error did you get ?

Cédric Moonen
Software developer

Charting control

Re: how to create a folder automatically

ramyasangeet15-May-06 20:45

ramyasangeet

15-May-06 20:45

Hi,
Thanks for the reply.
This is my coding.

CFile cf;<br />
	CString filename;<br />
        int xu_flag;<br />
	CString s;		<br />
	if(i == 1)<br />
	{ <br />
	  s.Format("%d",  (xu_picno/2)+1);<br />
	  filename = "c:\\temp\\";<br />
          filename+=s;<br />
	  filename+="F";<br />
	  filename+=".jpg";<br />
	}<br />
	else<br />
	{<br />
	s.Format("%d",  (xu_picno/2)+1);<br />
	filename = "c:\\temp\\";				<br />
        filename+=s;<br />
        filename+="R";<br />
	filename+=".jpg";<br />
		<br />
	}<br />
        xu_flag = cf.Open(filename, CFile::modeCreate | CFile::modeWrite);<br />
			cf.Write(sp_temp, xu_len); <br />
			cf.Close();

This coding is for storing each frame of video file in jpeg format.Using Xu_picno, i can able to retrive pictures.So everytime the pic no changes,the filename will also change.Like 1F,2F...
My problem is ,i have to store those picture in seperate folders.

So i need to create folder in runtime.how to do that.

help me please

cheers

sangeet

Re: how to create a folder automatically

Cedric Moonen15-May-06 20:50

Cedric Moonen

15-May-06 20:50

You can't create folder with CFile.
Use the _mkdir[^] function for that purpose.

Cédric Moonen
Software developer

Charting control

Re: how to create a folder automatically

David Crow16-May-06 2:43

David Crow

16-May-06 2:43

ramyasangeet wrote:
s.Format("%d", (xu_picno/2)+1);
filename = "c:\\temp\\";
filename+=s;
filename+="F";
filename+=".jpg";

Why not use:

filename.Format("c:\\temp\\%dF.jpg", (xu_picno/2)+1);

ramyasangeet wrote:
xu_flag = cf.Open(filename, CFile::modeCreate | CFile::modeWrite);
cf.Write(sp_temp, xu_len);

If the call to Open() fails, there's no need to call Write() or Close().

"The largest fire starts but with the smallest spark." - David Crow

Re: how to create a folder automatically

Hamid_RT15-May-06 21:05

Hamid_RT

15-May-06 21:05

and CreateDirectory

whitesky

Re: how to create a folder automatically

ramyasangeet15-May-06 21:10

ramyasangeet

15-May-06 21:10

can u please give me an example.
Also do i need to declare _mkdir??

help me out

cheers

sangeet

Re: how to create a folder automatically

Cedric Moonen15-May-06 21:15

Cedric Moonen

15-May-06 21:15

ramyasangeet wrote:
Also do i need to declare _mkdir??

What do you mean ?? You simply need to call this function with the name of the folder you want to create. Did you read the doc from the MSDN (the link I sent you) ? It's pretty obvious how to use it. Also, don't forget to include <direct.h> (also stated in the doc).

Cédric Moonen
Software developer

Charting control

Re: how to create a folder automatically

Hamid_RT15-May-06 21:15

Hamid_RT

15-May-06 21:15

I suggest that you read msdn
CreateDirectory("c:\\test",NULL);

whitesky

Re: how to create a folder automatically

Hamid_RT15-May-06 21:17

Hamid_RT

15-May-06 21:17

in www.msdn.com

CreateDirectory
This function creates a new directory

_mkdir
Create a new directory.

WhiteSky

Re: how to create a folder automatically

ramyasangeet15-May-06 21:48

ramyasangeet

15-May-06 21:48

thanks for ur reply.

I used the create directory function.
CreateDirectory("c:\\test\\",NULL);

To create another folder named front in the test folder,i used the same method.

CreateDirectory("c:\\test\\front",NULL); ,the folder is not creating..any other way to create subdirectories??

Also i have to store jpeg files in the created subdirectory.
How to do that.

cheers

sangeet

Re: how to create a folder automatically

Hamid_RT15-May-06 22:35

Hamid_RT

15-May-06 22:35

you can use each name instead test use your favorite name
like this
CopyFile("c:\\a.bmp","d:\\a.bmp",1);

whitesky

Re: how to create a folder automatically

ThatsAlok15-May-06 23:34

ThatsAlok

15-May-06 23:34

ramyasangeet wrote:
CreateDirectory("c:\\test\\front",NULL); ,the folder is not creating..any other way to create subdirectories??

try SHFileOperation api or http://www.codeproject.com/shell/cshellfileop.asp[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Re: how to create a folder automatically

David Crow16-May-06 2:39

David Crow

16-May-06 2:39

ramyasangeet wrote:
CreateDirectory("c:\\test\\front",NULL); ,the folder is not creating..

Are you sure that the c:\test folder exists? If it doesn't, CreateDirectory() will fail.

Why are you not checking the return value from GetLastError()?

"The largest fire starts but with the smallest spark." - David Crow

Control the character spacing in the CEdit Control

LaHaHa15-May-06 20:13

LaHaHa

15-May-06 20:13

I would like to know how to control the charactor spacing in the CEdit control? Please help!

notepad application

keerthikaaa15-May-06 20:07

keerthikaaa

15-May-06 20:07

hai everybody

i want to create a notepad using a single document application.can you please help me how can i create that application.

Re: notepad application

Jitendra gangwar15-May-06 21:01

Jitendra gangwar

15-May-06 21:01

Hi,
The best way is to use the MFC framework and choose the SDI application templete...most of the functionality is alreay implemented in the same.

or you can refer the sample source code provided in the MSDN for the notepad application.

all the best.

Jitendra.;)

Re: notepad application

ThatsAlok15-May-06 23:32

ThatsAlok

15-May-06 23:32

keerthikaaa wrote:
hai everybodyi want to create a notepad using a single document application.can you please help me how can i create that application.

www.codeproject.com/cpp/TextEdit.asp[^]
www.codeproject.com/useritems/texti.asp[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Static Function and Static Class

Scorpio15-May-06 20:07

Scorpio

15-May-06 20:07

Can any body explain me use of Static Function and Static Class in C++/VC++ Cry | :((

Re: Static Function and Static Class

Cedric Moonen15-May-06 20:28

Cedric Moonen

15-May-06 20:28

What do you mean by static class ? As explained previously already, there is no such thing as a static class. You can only have a static instance of the class (like any other variable). Is that what you are looking for ?

For static function, in which context is that used ? You mean a static member function ? If yes, then it means that the function is shared across all instances of the class (thus, doesn't need a particular instance in order to be called). An example is the GetCurrentTime from CTime:

CTime t = CTime::GetCurrentTime();

As you see, you don't need to declare an instance in order to call the function.

Does that answer your question ?

Cédric Moonen
Software developer

Charting control

Re: Static Function and Static Class

Scorpio15-May-06 20:45

Scorpio

15-May-06 20:45

it means that without creating an instance of the class I can call its static function.

Re: Static Function and Static Class

Cedric Moonen15-May-06 20:55

Cedric Moonen

15-May-06 20:55

NiLeSh KoRpE wrote:
it means that without creating an instance of the class I can call its static function.

I don't understand... Is that a question ? If yes, I just answered in my previous post: yes it means that without creating an instance, you can call a static member function of the class.

Cédric Moonen
Software developer

Charting control

Re: Static Function and Static Class

Scorpio15-May-06 21:03

Scorpio

15-May-06 21:03

Thank U

Re: Static Function and Static Class

Hamid_RT15-May-06 21:12

Hamid_RT

15-May-06 21:12

maybe it is some helpful to you
Use of Static[^]

whitesky

Windows Services

zahid_ash15-May-06 19:51

zahid_ash

15-May-06 19:51

Hi,

Can we create a service (using VC++ 6) that runs on Windows 98. OR the services can only run on Windows NT and 2000.
Do they run on Windows XP.
Could you please tell me that on which Windows operating systems they can run.?

If i want to run them on Linux and Unix what are the thing to be considered?

Regards.

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