static LRESULT CALLBACK WndProc (HWND hwnd, UINT message,
                                 WPARAM wParam, LPARAM lParam) {
    HDC hdc;
    static int ignore_size = FALSE;
    static int ignore_clip = FALSE;
    static int just_reconfigged = FALSE;
    static int resizing = FALSE;
    static int need_backend_resize = FALSE;

    switch (message) {
      case WM_TIMER:
	if (pending_netevent)
	    enact_pending_netevent();
	if (inbuf_head)
	    term_out();

	break;
      case WM_IGNORE_SIZE:
	ignore_size = TRUE;	       /* don't panic on next WM_SIZE msg */
	break;
      case WM_ENTERSIZEMOVE:
        EnableSizeTip(1);
        resizing = TRUE;
	need_backend_resize = FALSE;
        break;
      case WM_EXITSIZEMOVE:
        EnableSizeTip(0);
        resizing = FALSE;
	if (need_backend_resize)
	    back->size();
        break;
      case WM_SIZING:
	{
	    int width, height, w, h, ew, eh;
	    LPRECT r = (LPRECT)lParam;

	    width = r->right - r->left - extra_width;

                /*
                 * Don't call back->size in mid-resize. (To prevent
                 * massive numbers of resize events getting sent
                 * down the connection during an NT opaque drag.)
                 */
                if (!resizing)
                    back->size();
		else
		    need_backend_resize = TRUE;
		just_reconfigged = FALSE;
	    }
	}
	ignore_size = FALSE;
	return 0;
      case WM_VSCROLL:
	switch (LOWORD(wParam)) {