creating pixmaps and cursors

[Ian Zimmerman <itz speakeasy org>]

This is my first g*k* program, please be tolerant.  If ignored I'll
know that this is a FAQ answered in some obvious place ... but the
gtk documentation certainly is not that place.

Using gtkmm1.2, I am trying to create 2 pixmaps from xpm data, and
from these pixmaps a cursor:

#include "cursor_image.xpm"
#include "cursor_mask.xpm"

#include <gtk--/main.h>
#include <gdk--/color.h>
#include <gdk--/pixmap.h>
#include <gdk/gdk.h>
#include <gdk/gdktypes.h>

// ...

void
my_window::broken()
{
  static Gdk_Bitmap dummy_bitmap;
  Gdk_Pixmap cursor_image;
  cursor_image.create_from_xpm_d(get_window(), dummy_bitmap, Gdk_Color(0),
                                 cursor_image_xpm);
  Gdk_Pixmap cursor_mask;
  cursor_mask.create_from_xpm_d(get_window(), dummy_bitmap, Gdk_Color(0),
                                cursor_mask_xpm);
  Gdk_Color black; black.set_rgb(0, 0, 0);
  Gdk_Color white; white.set_rgb(65535, 65535, 65535);
  Gdk_Cursor cursor(cursor_image, cursor_mask, black, white, 5, 5);
  return;
}

here are the xpm files:

/* XPM */
static char * cursor_image_xpm[] = {
"32 32 3 1",
"       c None",
".      c #000000",
"+      c #FFFFFF",
"++++++++++++++++++++++++++++++++",
"+++++++++...++++++++++++++++++++",
"++++++...+++...+++++++++++++++++",
"+++++.+++...+++.++++++++++++++++",
"++++.+...+.+...+.+++++++++++++++",
"+++.+.++++.++++.+.++++++++++++++",
"++.+.+++++.+++++.+.+++++++++++++",
"++..++++++.++++++..+++++++++++++",
"++.+++++++.+++++++.+++++++++++++",
"+..+++++++.+++++++..++++++++++++",
"+..+++++++++++++++..++++++++++++",
"+........+++........++++++++++++",
"+..+++++++++++++++..++++++++++++",
"+..+++++++.+++++++..++++++++++++",
"++.+++++++.+++++++.+++++++++++++",
"++..++++++.++++++..+++++++++++++",
"++.+.+++++.+++++...+++++++++++++",
"+++.+.++++.++++.++.+++++++++++++",
"++++.+...+.+...++++.++++++++++++",
"+++++.+++...+++.++++.+++++++++++",
"++++++...+++...+.++++.++++++++++",
"+++++++++...+++++.++++.+++++++++",
"++++++++++++++++++.++++.++++++++",
"+++++++++++++++++++.++++.+++++++",
"++++++++++++++++++++.++++.++++++",
"+++++++++++++++++++++.++++.+++++",
"++++++++++++++++++++++.++++.++++",
"+++++++++++++++++++++++.+++..+++",
"++++++++++++++++++++++++.+.++.++",
"+++++++++++++++++++++++++..++.++",
"++++++++++++++++++++++++++...+++",
"++++++++++++++++++++++++++++++++"};

/* XPM */
static char *cursor_mask_xpm[] = {
/* columns rows colors chars-per-pixel */
"32 32 2 1",
"  c opaque",
". c white",
/* pixels */
"........     ...................",
".....           ................",
"....             ...............",
"...               ..............",
"..                 .............",
".                   ............",
".      ..   ..      ............",
".     ...   ...     ............",
".    ....   ....     ...........",
"    .....   .....    ...........",
"         ...         ...........",
"         ...         ...........",
"         ...         ...........",
"    .....   .....    ...........",
".    ....   ....     ...........",
".     ...   ...     ............",
".      ..   ..      ............",
".                    ...........",
"..                    ..........",
"...                    .........",
"....                    ........",
".....                    .......",
"........     ...          ......",
".................          .....",
"..................          ....",
"...................          ...",
"....................          ..",
".....................         ..",
"......................         .",
".......................        .",
"........................      ..",
".........................     .."
};


what I get is:

Gdk-ERROR **: BadMatch (invalid parameter attributes)
  serial 1223 error_code 8 request_code 93 minor_code 0

from the GdkCursor constructor.  What is wrong?

BTW, why not a newsgroup?  All these zillions of mailing lists are a
waste. 

-- 
Ian Zimmerman, Oakland, California, U.S.A.
GPG: 433BA087  9C0F 194F 203A 63F7 B1B8  6E5A 8CA3 27DB 433B A087
EngSoc adopts market economy: cheap is wasteful, efficient is expensive.