+
+ help_type = NONE; /* didn't find any */
+}
+
+/*
+ * Start Help.
+ */
+static void start_help(frontend *fe, const char *topic)
+{
+ char *str = NULL;
+ int cmd;
+
+ switch (help_type) {
+ case HLP:
+ assert(help_path);
+ if (topic) {
+ str = snewn(10+strlen(topic), char);
+ sprintf(str, "JI(`',`%s')", topic);
+ cmd = HELP_COMMAND;
+ } else if (help_has_contents) {
+ cmd = HELP_FINDER;
+ } else {
+ cmd = HELP_CONTENTS;
+ }
+ WinHelp(fe->hwnd, help_path, cmd, (DWORD)str);
+ fe->help_running = TRUE;
+ break;
+ case CHM:
+#ifndef NO_HTMLHELP
+ assert(help_path);
+ assert(htmlhelp);
+ if (topic) {
+ str = snewn(20 + strlen(topic) + strlen(help_path), char);
+ sprintf(str, "%s::/%s.html>main", help_path, topic);
+ } else {
+ str = dupstr(help_path);
+ }
+ htmlhelp(fe->hwnd, str, HH_DISPLAY_TOPIC, 0);
+ fe->help_running = TRUE;
+ break;
+#endif /* NO_HTMLHELP */
+ case NONE:
+ assert(!"This shouldn't happen");
+ break;
+ }
+
+ sfree(str);
+}
+
+/*
+ * Stop Help on window cleanup.
+ */
+static void stop_help(frontend *fe)
+{
+ if (fe->help_running) {
+ switch (help_type) {
+ case HLP:
+ WinHelp(fe->hwnd, help_path, HELP_QUIT, 0);
+ break;
+ case CHM:
+#ifndef NO_HTMLHELP
+ assert(htmlhelp);
+ htmlhelp(NULL, NULL, HH_CLOSE_ALL, 0);
+ break;
+#endif /* NO_HTMLHELP */
+ case NONE:
+ assert(!"This shouldn't happen");
+ break;
+ }
+ fe->help_running = FALSE;
+ }
+}
+
+/*
+ * Terminate Help on process exit.
+ */
+static void cleanup_help(void)
+{
+ /* Nothing to do currently.
+ * (If we were running HTML Help single-threaded, this is where we'd
+ * call HH_UNINITIALIZE.) */