C / C++ / MFC

11-Apr-05 0:26

Hey Everybody!

I want to use shellexecute for files in the same directory as my application,
but using shellexecute I have to use the absolute path and not the relative path (which is the app's directory).

is there any command to run a program using relative path? and if not, how can I find the app's path, so I can use it as a variable in the shellexecute?

Thanks everybody!!!

ThatsAlok11-Apr-05 0:36

ThatsAlok

11-Apr-05 0:36

here is small MFC based example

//=========================
// Get Current Path
//=========================
{
  CString szCurrentDirectory;
  CString csPath;
		
//====================
// Get File Path
//====================
	
::GetModuleFileName(NULL,szCurrentDirectory.GetBuffer(MAX_PATH),MAX_PATH);

szCurrentDirectory.ReleaseBuffer();
 //====================
 //Get current Directory
  //====================
 csPath=szCurrentDirectory.Left(szCurrentDirectory.ReverseFind('\\')));


#ifdef _DEBUG
 OutputDebugString(csPath);
#endif

}

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Alok Gupta
visit me at http://www.thisisalok.tk

"I ~~Think~~ Believe this Will Help"

Green Fuze11-Apr-05 1:41

11-Apr-05 1:41

Hey! thanks! Smile | :)

works great, but I'm trying to understand the whole code and
there are some things I don't quite understand (I'm pretty much a beginner in this whole thing).
I hope you don't mind giving me a short explaination... Big Grin | :-D

::GetModuleFileName(NULL,szCurrentDirectory.GetBuffer(MAX_PATH),MAX_PATH);

okay, I understood that it returns the whole path including the file name (which of that you got rid later), but I didn't really understand what GetBuffer does. does it get the LPTSTR from the szCurrentDirectory CString???
I'm really confuzed here...

szCurrentDirectory.ReleaseBuffer();

I did understand that you need to release the buffer in order to get rid of the filename and get only the whole path.

csPath=szCurrentDirectory.Left(szCurrentDirectory.ReverseFind('\\'));

and what does szCurrentDirectory.Left do?
or the ReverseFind? I understood that it "erases" the filename, but I don't really get what each function is doing...

Thanks ALOT!!!

ThatsAlok11-Apr-05 1:58

ThatsAlok

11-Apr-05 1:58

Green Fuze wrote:
does it get the LPTSTR from the szCurrentDirectory CString???

Yes, I allocate the temporary LPSTR buffer of SIZE MAX_PATH from CString

Green Fuze wrote:
szCurrentDirectory.ReleaseBuffer();

Actually using this we instruct the CString variable to take control of temporary BUFFER

Green Fuze wrote:
I did understand that you need to release the buffer in order to get rid of the filename and get only the whole path.

Nope, I will do that in next step!

Green Fuze wrote:
szCurrentDirectory.Left do?
Its copy n character from left of string i.e. let you string="codeproject"; and i ask for string.left(4); then this string return me "code"

Green Fuze wrote:
ReverseFind

actually I try to find last '\' in the string as you already knows that filename with directory is something like this c:\codeproject\cp\filename.exe so, using ReverseFind function I find the last '\' and it return me exact location of that '\' and using CString::Left I copy required string into new variable.

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Alok Gupta
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Green Fuze11-Apr-05 3:55

11-Apr-05 3:55

Thanks!!!

you're a real savior! Smile | :)

I really like that Left thing, nice thinking! Smile | :)

but I'm using the "_splitpath()" command, instead of Left (as DavidCrow suggessted, just looks better for the job, but I still learnt something important!)

thanks!

ThatsAlok11-Apr-05 19:02

ThatsAlok

11-Apr-05 19:02

Yeah Fuze, Mr David Crow is one of Greatest programmer present in this Forum!.

you can go for _splitpath() solution as it very easy to use and Reliable

Happy programming

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Alok Gupta
visit me at http://www.thisisalok.tk

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David Crow11-Apr-05 3:09

David Crow

11-Apr-05 3:09

ThatsAlok wrote:
csPath=szCurrentDirectory.Left(szCurrentDirectory.ReverseFind('\\')));

It's much more reliable to use _splitpath() than ReverseFind().

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Green Fuze12-Apr-05 0:57

get filenames from folder

12-Apr-05 0:57

Hey, thanks! Smile | :)

works great!!!

Anonymous11-Apr-05 0:18

Anonymous

11-Apr-05 0:18

hi all

I have problem with the retrieving the file names from the specific folder.I am having .dll files in the folder and i wan the names of the files one by one .it's urgent .In mfc .

waiting for the reply

Best regards
Ganesh Takawle

Re: get filenames from folder

ThatsAlok11-Apr-05 0:32

ThatsAlok

11-Apr-05 0:32

use CFileFind Class

Some example related to that class
http://www.codeproject.com/file/cfilefinderex.asp[^]

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Alok Gupta
visit me at http://www.thisisalok.tk

"I ~~Think~~ Believe this Will Help"

Re: get filenames from folder

ddmcr11-Apr-05 0:32

ddmcr

11-Apr-05 0:32

void Find(CString dir_path)
{
CFileFind f;
CString path = dir_path;
CString LISTOFFILES;
if(path.Right(1) != "\\")
path += "\\";

path += "*.*";

bool res = f.FindFile(path);

while(res)
{
res = f.FindNextFile();
if (!f.IsDots()&&!f.IsDirectory())
LISTOFFILES+=f.GetFilePath()+"\n";

}
}

LISTOFFILES now contains all names of files which are in the dir_path directory(not including subfolders)

Example : Find("c:\\downloads\\")

Re: get filenames from folder

Anonymous11-Apr-05 0:58

Anonymous

11-Apr-05 0:58

hi Thanx for the solution .
It worked really fine and want it the same way..

Best Regards
Ganesh

CAsyncSocket connect time

GDavy11-Apr-05 0:11

GDavy

11-Apr-05 0:11

Hello there,
Is it possible to define the time a CAsyncSocket object will hang in a Connect call before it fails.. Currently my app is kind of slow when the connect fails...
So I would reduce the connect time if it is possible
Thx for any help
Davy

Re: CAsyncSocket connect time

ThatsAlok11-Apr-05 0:17

ThatsAlok

11-Apr-05 0:17

Look for this Function CAsyncSocket::SetSockOpt for setting connetion Timeout feature

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Alok Gupta
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"I ~~Think~~ Believe this Will Help"

FormatMessage FORMAT_MESSAGE_FROM_STRING

asdf175311-Apr-05 0:07

asdf1753

11-Apr-05 0:07

Hi,
I tried to use FormatMessage API to format variable argument that passed to a fuction, but it only delete all '%' characater with no thing else!
please help me.
my code :
void CEllepsisDlg::Log(CString x,...)
{
CString strTempInput;
strTempInput = x;
va_list marker;
va_start( marker, x );
LPTSTR lpFprmatedMessage;
va_start( marker, x );
strTempInput=x;
FormatMessage(FORMAT_MESSAGE_FROM_STRING,
LPCSTR(strTempInput),
NULL,
NULL,
(LPTSTR) &lpFprmatedMessage,
2048,
&marker);
char * tt=(char*)&lpFprmatedMessage;
va_end( marker );
}
Confused | :confused:

Re: FormatMessage FORMAT_MESSAGE_FROM_STRING

Joel Holdsworth11-Apr-05 2:50

Joel Holdsworth

11-Apr-05 2:50

Well looking at your code I think you got the params for FormatMessage slightly wrong. Try changing it to

void CEllepsisDlg::Log(CString x,...)
{
TCHAR fprmatedMessage[2048];

va_list marker;
va_start( marker, x );

FormatMessage(FORMAT_MESSAGE_FROM_STRING, (LPCVOID)((LPCTSTR)x), NULL, NULL,
fprmatedMessage, sizeof(fprmatedMessage), marker);

va_end( marker );
}

I havn't tested it, but I think that might work better.

[EDIT]Be aware that in this new scheme that i've created, nothing happens to fprmatedMessage when FormatMessage has finished. Make sure you copy the string into a CString before using outside the Log function, otherwise your program will crash. e.g.

CString myresult = fprmatedMessage;

If you only want to use it within the function, then you can use fprmatedMessage just like any LPTSTR.[/EDIT]

Hope this helps.

Joel Holdsworth

Wanna give me a job this summer?
Check out my online CV and project history[^]

A question on visual studio

PrashantJ10-Apr-05 23:45

PrashantJ

10-Apr-05 23:45

Hi,

I used to see a drop down in my visual studio editor(using vc++) which would list out all the classes in the file and the second dropdown would have the listings of all the methods.

While doing something, those two dropdowns have gone missing, can anybody help me to browse the menu options and add them back into my visual studio.

Thanks,

toxcct11-Apr-05 0:02

toxcct

11-Apr-05 0:02

you can either right click on the toolbars and select the right menu, or click on the view menu item and select wat you need...

TOXCCT >>> GEII power
[toxcct][VisualCalc]

PrashantJ11-Apr-05 0:04

PrashantJ

11-Apr-05 0:04

I tried almost all options but was unable to find it!

toxcct11-Apr-05 0:10

toxcct

11-Apr-05 0:10

are you using visual C++ 6 or .NET 2003 ?

if you're using VS.NET, you will find those comboboxes heading the source files (when you open one...).

cheers,

TOXCCT >>> GEII power
[toxcct][VisualCalc]