Windows API - CreateProcess() path with space

How do I pass path with space to the CreateProcess() function?

The following works

STARTUPINFO si;
            PROCESS_INFORMATION pi;

            ZeroMemory( &si, sizeof(si) );
            si.cb = sizeof(si);
            ZeroMemory( &pi, sizeof(pi) );

            if( !CreateProcess(_T("c:\\installer\\ew3d.exe"),    // No module name (use command line)
                _T("c:\\installer\\ew3d.exe /qr"),//argv[1],        // Command line
                NULL,           // Process handle not inheritable
                NULL,           // Thread handle not inheritable
                FALSE,          // Set handle inheritance to FALSE
                0,              // No creation flags
                NULL,           // Use parent's environment block
                NULL,           // Use parent's starting directory 
                &si,            // Pointer to STARTUPINFO structure
                &pi )           // Pointer to PROCESS_INFORMATION structure
                ) 
            {
                printf( "CreateProcess failed (%d).\n", GetLastError() );
                return false;
            }

            //Wait until child process exits.
            WaitForSingleObject( pi.hProcess, INFINITE );

            // Close process and thread handles. 
            CloseHandle( pi.hProcess );
            CloseHandle( pi.hThread );

But if I use a path with space as as the code below, it didn't work.

CreateProcess(_T("c:\\master installer\\ew3d.exe"),    // No module name (use command line)
                    _T("c:\\master installer\\ew3d.exe /qr"),//argv[1],        // Command line
                    NULL,           // Process handle not inheritable
                    NULL,           // Thread handle not inheritable
                    FALSE,          // Set handle inheritance to FALSE
                    0,              // No creation flags
                    NULL,           // Use parent's environment block
                    NULL,           // Use parent's starting directory 
                    &si,            // Pointer to STARTUPINFO structure
                    &pi )           // Pointer to PROCESS_INFORMATION structure
                    ) 

And quoting the command such as below didn't help too

CreateProcess(_T("\"c:\\master installer\\ew3d.exe\""),    // No module name (use command line)
                    _T("\"c:\\master installer\\ew3d.exe\" /qr"),//argv[1],        // Command line
                    NULL,           // Process handle not inheritable
                    NULL,           // Thread handle not inheritable
                    FALSE,          // Set handle inheritance to FALSE
                    0,              // No creation flags
                    NULL,           // Use parent's environment block
                    NULL,           // Use parent's starting directory 
                    &si,            // Pointer to STARTUPINFO structure
                    &pi )           // Pointer to PROCESS_INFORMATION structure
                    ) 

What is the right way to pass in the path with space?