+DEFUN ("mswindows-shell-execute", Fmswindows_shell_execute, 2, 4, 0, /*
+Get Windows to perform OPERATION on DOCUMENT.
+This is a wrapper around the ShellExecute system function, which
+invokes the application registered to handle OPERATION for DOCUMENT.
+OPERATION is typically \"open\", \"print\" or \"explore\" (but can be
+nil for the default action), and DOCUMENT is typically the name of a
+document file or URL, but can also be a program executable to run or
+a directory to open in the Windows Explorer.
+
+If DOCUMENT is a program executable, PARAMETERS can be a string
+containing command line parameters, but otherwise should be nil.
+
+SHOW-FLAG can be used to control whether the invoked application is hidden
+or minimized. If SHOW-FLAG is nil, the application is displayed normally,
+otherwise it is an integer representing a ShowWindow flag:
+
+ 0 - start hidden
+ 1 - start normally
+ 3 - start maximized
+ 6 - start minimized
+*/
+ (operation, document, parameters, show_flag))
+{
+ /* Encode filename and current directory. */
+ Lisp_Object current_dir = Ffile_name_directory (document);
+ char* path = NULL;
+ char* doc = NULL;
+ Extbyte* f=0;
+ int ret;
+ struct gcpro gcpro1, gcpro2;
+
+ CHECK_STRING (document);
+
+ if (NILP (current_dir))
+ current_dir = current_buffer->directory;
+
+ GCPRO2 (current_dir, document);
+
+ /* Use mule and cygwin-safe APIs top get at file data. */
+ if (STRINGP (current_dir))
+ {
+ TO_EXTERNAL_FORMAT (LISP_STRING, current_dir,
+ C_STRING_ALLOCA, f,
+ Qfile_name);
+#ifdef __CYGWIN32__
+ CYGWIN_WIN32_PATH (f, path);
+#else
+ path = f;
+#endif
+ }
+
+ if (STRINGP (document))
+ {
+ TO_EXTERNAL_FORMAT (LISP_STRING, document,
+ C_STRING_ALLOCA, f,
+ Qfile_name);
+#ifdef __CYGWIN32__
+ CYGWIN_WIN32_PATH (f, doc);
+#else
+ doc = f;
+#endif
+ }
+
+ UNGCPRO;
+
+ ret = (int) ShellExecute (NULL,
+ (STRINGP (operation) ?
+ XSTRING_DATA (operation) : NULL),
+ doc,
+ (STRINGP (parameters) ?
+ XSTRING_DATA (parameters) : NULL),
+ path,
+ (INTP (show_flag) ?
+ XINT (show_flag) : SW_SHOWDEFAULT));
+
+ if (ret > 32)
+ return Qt;
+
+ if (ret == ERROR_FILE_NOT_FOUND)
+ signal_simple_error ("file not found", document);
+ else if (ret == ERROR_PATH_NOT_FOUND)
+ signal_simple_error ("path not found", current_dir);
+ else if (ret == ERROR_BAD_FORMAT)
+ signal_simple_error ("bad executable format", document);
+ else
+ error ("internal error");
+
+ return Qnil;
+}
+
+void
+syms_of_gui_mswindows (void)
+{
+ DEFSUBR (Fmswindows_shell_execute);
+}