exe c++ boot at windows start but not working, run manually it works

Hello,
I created a small application in C + + with Visual C++ 2010 Express. No error message.
- Started manually: everything is OK (it wrote a text in a txt file)
- To run this application at start of windows, I created a key regedit (HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Run), the program starts without problems (I see it in task manager) but it does not work, the text file is not written !!!!!
Where is the problem?
A parameter in the project properties in vc++?
Thank!

Here is the code:

#include <fstream>
#include <windows.h>

int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
static std::ofstream g_log("log2.txt");
g_log << "message" << std::endl;
Sleep(INFINITE);
return 0;
}

Quote:

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Originally Posted by rv2010

- To run this application at start of windows, I created a key regedit (HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Run), the program starts without problems

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Try to move it from HKEY_LOCAL_MACHINE to HKEY_CURRENT_USER. It looks like your App is started too early: before your user profile will be loaded.

Hi,

You should specify a full path name to the file you want to open.
Try calling GetCurrentDirectory and see if it's the same.

With regards
Programartist

Where do you expect this log2.txt to be made ?

Without a path, it'll be in the current directory.
Which for boot time is the windows directory as far as I know.
UAC prevents write access in the windows directory.

Try putting a full path to where you want the file to be made.

it was indeed a problem of relative path, I put it in absolute and it works now.
Thank you for your answers