[WINAPI] konwersja char * do TCHAR *

double tab_x[ 4 ]; double tab_y[ 4 ];
for( int i = 0; i < 4; i++ )
{
    tab_x[ i ] = this->x_1 + i *( dlugosc_x / 3 );
    tab_y[ i ] = this->Y_1 + i *( dlugosc_y / 3 );
}

char falpha[ 10 ];
TCHAR * tab;

hdc = GetDC( hWnd );
// hdc = BeginPaint(hWnd, &ps1);

for( int i = 0; i < 4; i++ )
{
    sprintf_s( falpha, "%.1f",( float ) tab_x[ i ] );
    tab =( TCHAR * ) falpha;
    TextOut( hdc, 250 +( i * 500 / 3 ), 100, tab, _tcslen( tab ) );
    sprintf_s( falpha, "%.1f",( float ) tab_y[ i ] );
    tab = NULL;
    tab =( TCHAR * ) falpha;
    TextOut( hdc, 250, 100 +( i * 500 / 3 ),( tab ), _tcslen( tab ) );
}