void make_full_screen()
static void make_full_screen()
void make_full_screen(){    DWORD style;	RECT ss;    assert(IsZoomed(hwnd));	if (is_full_screen())		return;	    /* Remove the window furniture. */    style = GetWindowLong(hwnd, GWL_STYLE);    style &= ~(WS_CAPTION | WS_BORDER | WS_THICKFRAME);    if (cfg.scrollbar_in_fullscreen)	style |= WS_VSCROLL;    else	style &= ~WS_VSCROLL;    SetWindowLong(hwnd, GWL_STYLE, style);    /* Resize ourselves to exactly cover the nearest monitor. */	get_fullscreen_rect(&ss);    SetWindowPos(hwnd, HWND_TOP, ss.left, ss.top,			ss.right - ss.left,			ss.bottom - ss.top,			SWP_FRAMECHANGED);    /* Tick the menu item in the System menu. */    CheckMenuItem(GetSystemMenu(hwnd, FALSE), IDM_FULLSCREEN,		  MF_CHECKED);}