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cmandan

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__argv[1]

Hi All:

I am using vc++.NET and have "12345" as a command line argument. I am trying to access this argument using my program. InitInstance function is shown below.

Please

BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   hInst = hInstance; // Store instance handle in our global variable
      
   hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
   CW_USEDEFAULT, CW_USEDEFAULT, 310, 250, NULL, NULL, hInstance, NULL);

   if (!hWnd)
   {
      return FALSE;
   }

   AfxMessageBox(__argv[1],MB_OK);

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}

I get __argv[0] correctly but do not get __argv[1]. Kindly suggest something here...

Thanks,
Chirag
Avatar of cmandan
cmandan

ASKER

Hello Experts:

I am able to display __argv[0] with the code below, but I get blank when I try to display __argv[1].......I am using vc++.NET

This is the code again,

BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   hInst = hInstance; // Store instance handle in our global variable
      
   hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
   CW_USEDEFAULT, CW_USEDEFAULT, 310, 250, NULL, NULL, hInstance, NULL);

   if (!hWnd)
   {
      return FALSE;
   }

   AfxMessageBox(__argv[0],MB_OK);
   ::MessageBox(0,__argv[1],"command1",MB_OK);

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}

so I get argv[0] OK, but I get a blank dialog box for argv[1]....waiting for your kind suggestions..

Thanks,
Chirag
Avatar of AndyAinscow
I have tried your code as the first line of an app.  I get the path of the exe as the first and then 1234 as the second message box.

Does yours still behave oddly with

BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
  AfxMessageBox(__argv[0],MB_OK);
   ::MessageBox(0,__argv[1],"command1",MB_OK);

   HWND hWnd;
....
Another possibility is to check starting your app from a shortcut to make certain you are passing 1234 as a parameter.
Avatar of cmandan

ASKER

Well, when i type the same code in vc++ 6.0, I get the value of __argv[1]. But I don't get it in vc++.NET.....pls guide. I know the code is right, but it could be the settings....

Thanks,
Chirag
Avatar of cmandan

ASKER

AfxMessageBox(__argv[0]);
AfxMessageBox(__argv[1]);

Output:
1st dialog box
"C:\test.exe"
2nd dialog box
blank

I checked Properties>debugging>Command Line arguments and it is 123.

I would really appreciate your suggestions here ASAP..

Thanks,
Chirag
Is this a new improved feature of VC.Net to improve productivity?
Sorry, no further ideas.  The code looks OK and functions in an earlier VC++ version.
Wondering if it wouldn't be a ansi/unicode problem. What happens if you replace __argv by __targv or __wargv ?
Avatar of cmandan

ASKER

I found out this problem which is very strange....when I try to execute the code from the .exe file after double clicking on it, it  gives me a blank argv[1] value, but when I click on start to debug the file, it gives me the __argv[1] value correctly. In the earlier version of vc++ 6.0, this was not the case, but I don't know if there are some special settings required in this new version.

--chirag
ASKER CERTIFIED SOLUTION
Avatar of AndyAinscow
AndyAinscow
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ASKER

Great....got the explanation!! Thanks Andy, you get all the points...here you go!!

-Chirag