Cannot find entry point (DLL name) in the DLL with Visual FoxPro (149431)

RESOLUTION

To avoid this error, copy the function name, description, and parameters from the Win32 API function Help file into your Visual FoxPro program file. This documents the function in your code and ensures that the correct case is used.

For example, the GetUserName function retrieves the name of the user currently logged onto the system:

   BOOL GetUserName(

      LPTSTR  lpBuffer,// address of name buffer
      LPDWORD  nSize // address of size of name buffer
     );
   Parameters
				

The lpBuffer parameter points to the buffer receiving the null-terminated string containing the user's logon name. If this buffer is not large enough to contain the entire user name, the function fails.

The nSize parameter points to a DWORD that, on input, specifies the maximum size, in characters, of the buffer specified by the lpBuffer parameter. If this buffer is not large enough to contain the entire user name, the function fails. If the function succeeds, it will place the number of characters copied to the buffer into the DWORD to which nSize points.

To call the GetUserName DLL in Visual FoxPro, use the following command:

   DECLARE GetUserName in Win32API ;
      String @mybuffer, Integer @mybuffersize

				

If the same DLL was declared as:

   DECLARE GetuserName in Win32API ;
      String @mybuffer, Integer @mybuffersize
				

you receive the following error message: