comparison toolboxes/graph_visualisation/include/graphviz/gvcext.h @ 0:e9a9cd732c1e tip

first hg version after svn

+
+/* vim:set shiftwidth=4 ts=8: */
+
+/**********************************************************
+*      This software is part of the graphviz package      *
+*                http://www.graphviz.org/                 *
+*                                                         *
+*            Copyright (c) 1994-2004 AT&T Corp.           *
+*                and is licensed under the                *
+*            Common Public License, Version 1.0           *
+*                      by AT&T Corp.                      *
+*                                                         *
+*        Information and Software Systems Research        *
+*              AT&T Research, Florham Park NJ             *
+**********************************************************/
+
+/* Common header used by both clients and plugins */
+
+#ifndef GVCEXT_H
+#define GVCEXT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Define an apis array of name strings using an enumerated api_t as index.
+ * The enumerated type is defined here.  The apis array is
+ * inititialized in gvplugin.c by redefining ELEM and reinvoking APIS.
+ */
+#define APIS ELEM(render) ELEM(layout) ELEM(textlayout) ELEM(device) ELEM(loadimage)
+
+/*
+ * Define api_t using names based on the plugin names with API_ prefixed.
+ */
+#define ELEM(x) API_##x,
+    typedef enum { APIS _DUMMY_ELEM_=0 } api_t; /* API_render, API_layout, ... */
+    			/* Stupid but true: The sole purpose of "_DUMMY_ELEM_=0"
+			 * is to avoid a "," after the last element of the enum
+			 * because some compilers when using "-pedantic"
+			 * generate an error for about the dangling ","
+			 * but only if this header is used from a .cpp file!
+			 * Setting it to 0 makes sure that the enumeration
+			 * does not define an extra value.  (It does however
+			 * define _DUMMY_ELEM_ as an enumeration symbol,
+			 * but its value duplicates that of the first
+			 * symbol in the enumeration - in this case "render".)
+			 */
+
+    			/* One could wonder why trailing "," in:
+			 * 	int nums[]={1,2,3,};
+			 * is OK, but in:
+			 * 	typedef enum {a,b,c,} abc_t; 
+			 * is not!!!
+			 */
+#undef ELEM
+
+    typedef struct GVJ_s GVJ_t;
+    typedef struct GVC_s GVC_t;
+
+    typedef struct {
+	const char *name;
+	void* address;
+    } lt_symlist_t;
+
+    typedef struct gvplugin_available_s gvplugin_available_t;
+
+/*visual studio*/
+#ifdef WIN32_DLL
+#ifndef GVC_EXPORTS
+__declspec(dllimport) lt_symlist_t lt_preloaded_symbols[];
+#else
+__declspec(dllexport) lt_symlist_t lt_preloaded_symbols[];
+#endif
+#endif
+/*end visual studio*/
+
+
+#ifndef WIN32_DLL
+#if defined(GVDLL)
+	__declspec(dllexport) lt_symlist_t lt_preloaded_symbols[];
+#else
+	extern lt_symlist_t lt_preloaded_symbols[];
+#endif
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+
+#endif