How to find where the executable is located? 1

[niputaidea]

I need to find out where the executable that is currently running is located. For example, if a have an executable foo.exe located in c:\bar\foo.exe and I execute foo.exe from c:\a\very\long\path, I still need to know that foo.exe is located in c:\bar. I can get the directory where it was called from but not where it is located. Any help will be gladly appreciated.

Thx

NPI

 

[xwb]

The name of the executable will be in the first parameter of main. eg

int main (int argc, const char* argv[])

The name of the executable will be in argv[0]. If this doesn't give you the full path name then do something like

FILE* pipe;
char  dir[256];
pipe = popen ("pwd", "r");
fgets (pipe, dir, sizeof (dir));
fclose (pipe);

I'm writing this off the top of my head so they may be a few syntax errors.

 

[cpjust]

pipe = popen ("pwd", "r");

Unfortunately, "pwd" won't work on Windows.

Use the getcwd() function instead. On UNIX it's in <unistd.h> and on Windows it's in <direct.h>

 

[chipperMDW]

Unfortunately, the pwd/cwd is not the location of the executable.

Under Linux, you can find the executable by reading the file [tt]/proc/$PID/exe[/tt].

 

[ArkM]

Platform-dependent alternatives:

1. MS Visual C++ RTL only:
use _pgmptr global variable

extern char* _pgmptr;

2. MS Windows API only:
use

DWORD GetModuleFileName(
  HMODULE hModule,    // handle to module to find filename for
  LPTSTR lpFilename,  // pointer to buffer to receive module path
  DWORD nSize         // size of buffer, in characters
);

Set hModule == 0 for the current process. Use _MAX_PATH predefine constant from <stdlib.h>.