diff --git a/source/tycho/bindings.json b/source/tycho/bindings.json
index 1926fd2..2d97dfa 100644
--- a/source/tycho/bindings.json
+++ b/source/tycho/bindings.json
@@ -8,6 +8,16 @@
    "objects": {
       "Project": {
          "type": "Object",
+         "functions": {
+            "open": {
+               "return": "void",
+               "mut": true,
+               "arguments": [{
+                  "name": "fname",
+                  "type": "QString"
+               }]
+            }
+         },
          "properties": {
          },
          "itemProperties": {
diff --git a/source/tycho/cc_headers/mapprops.h b/source/tycho/cc_headers/mapprops.h
index 1d36eb0..12d12d7 100644
--- a/source/tycho/cc_headers/mapprops.h
+++ b/source/tycho/cc_headers/mapprops.h
@@ -1,7 +1,6 @@
 #pragma once
 
 #include <QDialog>
-#include <memory>
 
 namespace Ui
 {
@@ -17,7 +16,7 @@ public:
    ~MapProps();
 
 private:
-   std::unique_ptr<Ui::MapProps> ui;
+   QSharedPointer<Ui::MapProps> ui;
 };
 
 // EOF
diff --git a/source/tycho/cc_headers/menu.h b/source/tycho/cc_headers/menu.h
index a6227cf..20a7eff 100644
--- a/source/tycho/cc_headers/menu.h
+++ b/source/tycho/cc_headers/menu.h
@@ -1,7 +1,9 @@
 #pragma once
 
 #include <QMainWindow>
-#include <memory>
+#include <vector>
+
+class Project;
 
 namespace Ui
 {
@@ -23,7 +25,8 @@ public slots:
    void openMapProperties();
 
 private:
-   std::unique_ptr<Ui::Menu> ui;
+   QSharedPointer<Ui::Menu> ui;
+   std::vector<QSharedPointer<Project>> projects;
 };
 
 // EOF
diff --git a/source/tycho/cc_source/mapprops.cc b/source/tycho/cc_source/mapprops.cc
index fe6441c..41cc735 100644
--- a/source/tycho/cc_source/mapprops.cc
+++ b/source/tycho/cc_source/mapprops.cc
@@ -7,6 +7,7 @@ MapProps::MapProps(QWidget *parent) :
    ui(new Ui::MapProps)
 {
    ui->setupUi(this);
+   dbgPrintFunc();
 }
 
 MapProps::~MapProps()
diff --git a/source/tycho/cc_source/menu.cc b/source/tycho/cc_source/menu.cc
index 4044bca..64e00fa 100644
--- a/source/tycho/cc_source/menu.cc
+++ b/source/tycho/cc_source/menu.cc
@@ -8,13 +8,12 @@
 #include <QFileDialog>
 #include <iostream>
 
-extern "C" void Ma_test_fn(char const *fname);
-
 Menu::Menu(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::Menu)
 {
    ui->setupUi(this);
+   dbgPrintFunc();
 }
 
 Menu::~Menu()
@@ -24,7 +23,7 @@ Menu::~Menu()
 
 void Menu::mapNew()
 {
-   Project obj{this};
+   auto proj = projects.emplace_back(new Project);
 }
 
 void Menu::mapOpen()
@@ -36,7 +35,8 @@ void Menu::mapOpen()
          QString(),
          tr("Marathon Map files (*.scen *.sceA Map)"));
 
-   Ma_test_fn(qUtf8Printable(fname));
+   auto proj = projects.emplace_back(new Project);
+   proj->open(fname);
 }
 
 void Menu::openAbout()
diff --git a/source/tycho/source/main.rs b/source/tycho/source/main.rs
index feb5954..1e85595 100644
--- a/source/tycho/source/main.rs
+++ b/source/tycho/source/main.rs
@@ -7,13 +7,6 @@ extern "C" {
    fn main_cc(app_name: *mut ffi::c_char);
 }
 
-#[no_mangle]
-unsafe extern "C" fn Ma_test_fn(fname: *const ffi::c_char)
-{
-   let fname = ffi::CStr::from_ptr(fname);
-   println!("hello, world! from rust: {}", fname.to_str().unwrap());
-}
-
 fn main() -> ResultS<()>
 {
    println!("rust entry");
diff --git a/source/tycho/source/qimpl.rs b/source/tycho/source/qimpl.rs
index ee53413..977addb 100644
--- a/source/tycho/source/qimpl.rs
+++ b/source/tycho/source/qimpl.rs
@@ -9,7 +9,7 @@ impl Drop for Project
 {
    fn drop(&mut self)
    {
-      println!("drop Project");
+      eprintln!("drop Project");
    }
 }
 
@@ -17,7 +17,7 @@ impl ProjectTrait for Project
 {
    fn new(emit: ProjectEmitter) -> Project
    {
-      println!("new Project");
+      eprintln!("new Project");
       Project{emit}
    }
 
@@ -25,6 +25,11 @@ impl ProjectTrait for Project
    {
       &mut self.emit
    }
+
+   fn open(&mut self, fname: String)
+   {
+      println!("opening project: {}", fname);
+   }
 }
 
 // EOF