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From: jxf@sppy00.UUCP (Jonathan Fausey)
Newsgroups: comp.windows.x
Subject: X Protocol Error?
Keywords: BackgroundPixmap, XChangeWindowAttributes
Message-ID: <1050@sppy00.UUCP>
Date: 12 Dec 90 18:57:40 GMT
Organization: Online Computer Library Center, Dublin, Ohio.
Lines: 56


I have encountered an Xlib programming problem that I am unable to resolve.
Namely, the code below compiles on a Sparcstation 1 (R3), a NeXT (R3), a Mac
IIx (A/UX & R4), a DG AViiON (R3), and a Sun 3/50 (R3), runs (as a client on
any of these machines) under the X servers on the NeXT, Mac, and Sun 3/50, but
generates an X protocol error on the others' X servers as well as on a PC X
server.  The X protocol error I get is:

X Protocol error:  BadMatch, invalid parameter attributes
  Major opcode of failed request:  1 (X_CreateWindow)
  Minor opcode of failed request:  1
  Resource id in failed request:  0x8006c
  Serial number of failed request:  82
  Current serial number in output stream:  85

Here's (portions of) the code:

  Display              *wndw_disp;
  int                   wndw_screen;
  Visual               *visual;
  XSetWindowAttributes  WinAttr;
  unsigned long         WinAttrMask = CWBackPixmap;
  Window                win;
  Window                wndw_hndl;
  Pixmap                pix;
  .
  .
  .
  if (!(wndw_disp = XOpenDisplay("")))
  {
     printf("Can't connect to X server %s\n", XDisplayName(""));
     exit(-1);
  }

  wndw_screen = DefaultScreen(wndw_disp);
  wndw_hndl = XCreateSimpleWindow(wndw_disp,
                               DefaultRootWindow(wndw_disp),
                               wndw_hint.x, wndw_hint.y, wndw_hint.width,
                               wndw_hint.height,
                               border_w, wndw_foregrnd, wndw_backgrnd);
  XSetStandardProperties(wndw_disp, *wndw_hndl, test_str, cur_title_str,
                         None, argv, argc, &wndw_hint);
  .
  .
  .
  pix = XCreateBitmapFromData(wndw_disp, wndw_hndl,
                              RawBitmapData, NumBitsPerBitmapLine,
                              NumLinesInBitmap);
  WinAttr.background_pixmap = pix;
  win = XCreateWindow(wndw_disp, DefaultRootWindow(wndw_disp),
                           ulx, uly, width, height, 4, 1, InputOutput,
                           DefaultVisual(wndw_disp,wndw_screen), WinAttrMask,
                           &WinAttr);

I get a similar X protocol error message when I use XCreateSimpleWindow and
XSetBackgroundPixmap instead of XCreateWindow etc.  Can some kind soul help?