Added the plugins directory to CVS and updated the files

editor/studio/plugins/Hello_World CPP/sample.cpp

@@ -0,0 +1,26 @@
+#include "sample.h"
+#include "studio_api.h"
+#include <stdio.h>
+#include <windows.h>
+#include <string.h>
+
+
+EXPORT void PluginLoad(load_info *LoadInfo) {
+    LoadInfo->sPluginName = "C(++) Example"; // Set PlugIn-name
+	LoadInfo->sPluginDescription = "Simple example for creating plugins with C(++)"; // Set description
+	SendStudioMsg(SCM_MENU_ADDITEM, "Tools->Hello World! [C++]", -1); // Register menu items
+	/* [...] */
+}
+
+EXPORT void PluginUnload() {
+	SendStudioMsg(SCM_REMOVE_MENUITEM, "Hello World! [C++]", 0);
+}
+
+EXPORT int CustomItemClick(CHAR *Caption) {
+	if (strcmp(Caption, "Hello World! [C++]") == 0) { // If caption is equal set text and return PLUGIN_HANDLED
+		SendStudioMsg(SCM_EDITOR_SETTEXT, "Hello World!\n\nThis is an example for C(++) plugins for AMXX-Studio.", 0);
+		return PLUGIN_HANDLED;
+	}
+	else
+		return PLUGIN_CONTINUE;
+}