diff --git a/exe/fstl.ico b/exe/fstl.ico
new file mode 100644
index 0000000..2e2d891
Binary files /dev/null and b/exe/fstl.ico differ
diff --git a/exe/fstl.rc b/exe/fstl.rc
new file mode 100644
index 0000000..3620f29
--- /dev/null
+++ b/exe/fstl.rc
@@ -0,0 +1 @@
+IDI_ICON1 ICON DISCARDABLE "fstl.ico"
diff --git a/qt/fstl.pro b/qt/fstl.pro
index 950c376..7a0f449 100644
--- a/qt/fstl.pro
+++ b/qt/fstl.pro
@@ -32,6 +32,15 @@ RESOURCES += \
     qt.qrc \
     ../gl/gl.qrc
 
-QMAKE_INFO_PLIST = ../app/Info.plist
+macx {
+    QMAKE_INFO_PLIST = ../app/Info.plist
+    ICON = ../app/fstl.icns
+}
 
-ICON = ../app/fstl.icns
+win32 {
+    RC_FILE = ../exe/fstl.rc
+}
+
+static {
+    CONFIG += static
+}
diff --git a/src/backdrop.cpp b/src/backdrop.cpp
index 7975f72..13d0aa3 100644
--- a/src/backdrop.cpp
+++ b/src/backdrop.cpp
@@ -2,6 +2,8 @@
 
 Backdrop::Backdrop()
 {
+    initializeGLFunctions();
+
     shader.addShaderFromSourceFile(QGLShader::Vertex, ":/gl/quad.vert");
     shader.addShaderFromSourceFile(QGLShader::Fragment, ":/gl/quad.frag");
     shader.link();
diff --git a/src/backdrop.h b/src/backdrop.h
index 53e0074..a2398c8 100644
--- a/src/backdrop.h
+++ b/src/backdrop.h
@@ -1,10 +1,11 @@
 #ifndef BACKDROP_H
 #define BACKDROP_H
 
+#include <QtOpenGL/QGLFunctions>
 #include <QtOpenGL/QGLShaderProgram>
 #include <QtOpenGL/QGLBuffer>
 
-class Backdrop
+class Backdrop : protected QGLFunctions
 {
 public:
     Backdrop();
diff --git a/src/canvas.cpp b/src/canvas.cpp
index 4c31c6c..03f9376 100644
--- a/src/canvas.cpp
+++ b/src/canvas.cpp
@@ -41,8 +41,16 @@ void Canvas::set_status(const QString &s)
     update();
 }
 
+void Canvas::clear_status()
+{
+    status = "";
+    update();
+}
+
 void Canvas::initializeGL()
 {
+    initializeGLFunctions();
+
     mesh_shader.addShaderFromSourceFile(QGLShader::Vertex, ":/gl/mesh.vert");
     mesh_shader.addShaderFromSourceFile(QGLShader::Fragment, ":/gl/mesh.frag");
     mesh_shader.link();
diff --git a/src/canvas.h b/src/canvas.h
index 6507dca..64a8dd5 100644
--- a/src/canvas.h
+++ b/src/canvas.h
@@ -3,6 +3,7 @@
 
 #include <QWidget>
 #include <QtOpenGL/QGLWidget>
+#include <QtOpenGL/QGLFunctions>
 #include <QtOpenGL/QGLShaderProgram>
 #include <QMatrix4x4>
 
@@ -10,7 +11,7 @@ class GLMesh;
 class Mesh;
 class Backdrop;
 
-class Canvas : public QGLWidget
+class Canvas : public QGLWidget, protected QGLFunctions
 {
     Q_OBJECT
 
@@ -23,6 +24,7 @@ public:
 
 public slots:
     void set_status(const QString& s);
+    void clear_status();
     void load_mesh(Mesh* m);
 
 
diff --git a/src/glmesh.cpp b/src/glmesh.cpp
index 8e0cab3..7053809 100644
--- a/src/glmesh.cpp
+++ b/src/glmesh.cpp
@@ -4,6 +4,8 @@
 GLMesh::GLMesh(const Mesh* const mesh)
     : vertices(QGLBuffer::VertexBuffer), indices(QGLBuffer::IndexBuffer)
 {
+    initializeGLFunctions();
+
     vertices.create();
     indices.create();
 
diff --git a/src/glmesh.h b/src/glmesh.h
index 01bf921..74a193f 100644
--- a/src/glmesh.h
+++ b/src/glmesh.h
@@ -2,10 +2,11 @@
 #define GLMESH_H
 
 #include <QtOpenGL/QGLBuffer>
+#include <QtOpenGL/QGLFunctions>
 
 class Mesh;
 
-class GLMesh
+class GLMesh : protected QGLFunctions
 {
 public:
     GLMesh(const Mesh* const mesh);
diff --git a/src/window.cpp b/src/window.cpp
index 203fff9..15ffb03 100644
--- a/src/window.cpp
+++ b/src/window.cpp
@@ -69,6 +69,16 @@ void Window::on_about()
         "   style=\"color: #93a1a1;\">matt.j.keeter@gmail.com</a></p>");
 }
 
+void Window::enable_open()
+{
+    open_action->setEnabled(true);
+}
+
+void Window::disable_open()
+{
+    open_action->setEnabled(false);
+}
+
 bool Window::load_stl(const QString& filename)
 {
     if (!open_action->isEnabled())  return false;
@@ -77,7 +87,7 @@ bool Window::load_stl(const QString& filename)
 
     Loader* loader = new Loader(this, filename);
     connect(loader, &Loader::started,
-            [=](){ open_action->setEnabled(false); });
+              this, &Window::disable_open);
 
     connect(loader, &Loader::got_mesh,
             canvas, &Canvas::load_mesh);
@@ -85,14 +95,14 @@ bool Window::load_stl(const QString& filename)
     connect(loader, &Loader::finished,
             loader, &Loader::deleteLater);
     connect(loader, &Loader::finished,
-            [=](){ open_action->setEnabled(true); });
+              this, &Window::enable_open);
     connect(loader, &Loader::finished,
-            [=](){ canvas->set_status(""); });
+            canvas, &Canvas::clear_status);
 
     if (filename[0] != ':')
     {
         connect(loader, &Loader::loaded_file,
-                this, &Window::setWindowTitle);
+                  this, &Window::setWindowTitle);
     }
 
     loader->start();
diff --git a/src/window.h b/src/window.h
index 866e103..22c35cb 100644
--- a/src/window.h
+++ b/src/window.h
@@ -16,6 +16,9 @@ public slots:
     void on_open();
     void on_about();
 
+    void enable_open();
+    void disable_open();
+
 private:
     QAction* const open_action;
     QAction* const about_action;