diff --git a/src/xpm/include/simx.h b/src/xpm/include/simx.h
new file mode 100644
index 0000000..001cfdb
--- /dev/null
+++ b/src/xpm/include/simx.h
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 1989-95 GROUPE BULL
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * GROUPE BULL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of GROUPE BULL shall not be
+ * used in advertising or otherwise to promote the sale, use or other dealings
+ * in this Software without prior written authorization from GROUPE BULL.
+ */
+
+/*****************************************************************************\
+* simx.h: 0.1a                                                                *
+*                                                                             *
+* This emulates some Xlib functionality for MSW. It's not a general solution, *
+* it is close related to XPM-lib. It is only intended to satisfy what is need *
+* there. Thus allowing to read XPM files under MS windows.                    *
+*                                                                             *
+* Developed by HeDu 3/94 (hedu@cul-ipn.uni-kiel.de)                           *
+\*****************************************************************************/
+
+
+#ifndef _SIMX_H
+#define _SIMX_H
+
+#ifdef FOR_MSW
+
+#include "windows.h"			/* MS windows GDI types */
+
+/*
+ * minimal portability layer between ansi and KR C
+ */
+/* this comes from xpm.h, and is here again, to avoid complicated
+    includes, since this is included from xpm.h */
+/* these defines get undefed at the end of this file */
+#if __STDC__ || defined(__cplusplus) || defined(c_plusplus)
+ /* ANSI || C++ */
+#define FUNC(f, t, p) extern t f p
+#define LFUNC(f, t, p) static t f p
+#else /* k&R */
+#define FUNC(f, t, p) extern t f()
+#define LFUNC(f, t, p) static t f()
+#endif
+
+
+FUNC(boundCheckingMalloc, void *, (long s));
+FUNC(boundCheckingCalloc, void *, (long num, long s));
+FUNC(boundCheckingRealloc, void *, (void *p, long s));
+
+/* define MSW types for X window types,
+   I don't know much about MSW, but the following defines do the job */
+
+typedef HDC Display;			/* this should be similar */
+typedef void *Screen;			/* not used */
+typedef void *Visual;			/* not used yet, is for GRAY, COLOR,
+					 * MONO */
+
+typedef void *Colormap;			/* should be COLORPALETTE, not done
+					 * yet */
+
+typedef COLORREF Pixel;
+
+#define PIXEL_ALREADY_TYPEDEFED		/* to let xpm.h know about it */
+
+typedef struct {
+    Pixel pixel;
+    BYTE red, green, blue;
+}      XColor;
+
+typedef struct {
+    HBITMAP bitmap;
+    unsigned int width;
+    unsigned int height;
+    unsigned int depth;
+}      XImage;
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+/* some replacements for X... functions */
+
+/* XDefaultXXX */
+    FUNC(XDefaultVisual, Visual *, (Display *display, Screen *screen));
+    FUNC(XDefaultScreen, Screen *, (Display *d));
+    FUNC(XDefaultColormap, Colormap *, (Display *display, Screen *screen));
+    FUNC(XDefaultDepth, int, (Display *d, Screen *s));
+
+/* color related */
+    FUNC(XParseColor, int, (Display *, Colormap *, char *, XColor *));
+    FUNC(XAllocColor, int, (Display *, Colormap *, XColor *));
+    FUNC(XQueryColors, void, (Display *display, Colormap *colormap,
+			      XColor *xcolors, int ncolors));
+    FUNC(XFreeColors, int, (Display *d, Colormap cmap,
+			    unsigned long pixels[],
+			    int npixels, unsigned long planes));
+/* XImage */
+    FUNC(XCreateImage, XImage *, (Display *, Visual *, int depth, int format,
+				  int x, int y, int width, int height,
+				  int pad, int foo));
+
+/* free and destroy bitmap */
+    FUNC(XDestroyImage, void /* ? */ , (XImage *));
+/* free only, bitmap remains */
+    FUNC(XImageFree, void, (XImage *));
+#if defined(__cplusplus) || defined(c_plusplus)
+} /* end of extern "C" */
+#endif /* cplusplus */
+
+#define ZPixmap 1			/* not really used */
+#define XYBitmap 1			/* not really used */
+
+#ifndef True
+#define True 1
+#define False 0
+#endif
+#ifndef Bool
+typedef BOOL Bool;		/* take MSW bool */
+#endif
+/* make these local here, simx.c gets the same from xpm.h */
+#undef LFUNC
+#undef FUNC
+
+#endif /* def FOR_MSW */
+
+#endif /* _SIMX_H */