diff --git a/src/main.py b/src/main.py
index 7afaade..70246d6 100644
--- a/src/main.py
+++ b/src/main.py
@@ -29,7 +29,7 @@ gi.require_version('Handy', '1')
 from gi.repository import Handy
 Handy.init()
 
-from .widgets import LoginPage, Timeline, PostItem
+from .widgets import LoginPage, Timeline, PostItem, ComposeWindow
 
 class Application(Gtk.Application):
 
@@ -58,13 +58,13 @@ class Application(Gtk.Application):
             pass
 
     def do_activate(self):
-        win = self.props.active_window
-        if not win:
-            win = Gtk.ApplicationWindow(application=self)
-        win.set_default_size(320, 480)
+        self.win = self.props.active_window
+        if not self.win:
+            self.win = Gtk.ApplicationWindow(application=self)
+        self.win.set_default_size(320, 480)
 
         title_bar = Handy.TitleBar()
-        win.set_titlebar(title_bar)
+        self.win.set_titlebar(title_bar)
 
         self.header = Handy.HeaderBar(show_close_button=True)
         title_bar.add(self.header)
@@ -94,8 +94,8 @@ class Application(Gtk.Application):
         vbox.pack_start(self.stack, True, True, 0)
         vbox.pack_end(stack_switcher_bar, False, False, 0)
 
-        win.add(vbox)
-        win.show_all()
+        self.win.add(vbox)
+        self.win.show_all()
 
     def blarp(self, args=None):
         logging.debug("BLARP")
@@ -130,6 +130,7 @@ class Application(Gtk.Application):
         self.stack.add_titled(global_tl, "global", "Global")
 
         new_post_button = Gtk.Button.new_from_icon_name('list-add-symbolic', 1)
+        new_post_button.connect('clicked', self.on_new_post)
         self.header.pack_start(new_post_button)
 
         reload_button = Gtk.Button.new_from_icon_name('view-refresh-symbolic', 1)
@@ -144,6 +145,10 @@ class Application(Gtk.Application):
         timeline = self.stack.get_visible_child()
         timeline.emit('refresh')
 
+    def on_new_post(self, button):
+        compose = ComposeWindow()
+        compose.set_transient_for(self.win)
+
 def main(version):
     logging.basicConfig(level=logging.DEBUG)
     app = Application()
diff --git a/src/widgets.py b/src/widgets.py
index 767c8f7..9ae40d9 100644
--- a/src/widgets.py
+++ b/src/widgets.py
@@ -28,6 +28,65 @@ from gi.repository import GObject, Gdk, Gtk, Gio, GLib
 gi.require_version('Handy', '1')
 from gi.repository import Handy
 
+class ComposeWindow(Handy.Window):
+
+    def __init__(self):
+        super().__init__(modal=True)
+        self.set_default_size(500, 300)
+        self.set_type_hint(Gdk.WindowTypeHint.DIALOG)
+
+        box = Gtk.Box(orientation='vertical')
+        header = Handy.HeaderBar(show_close_button=False)
+
+        cancel_button = Gtk.Button(label='Cancel')
+        cancel_button.connect('clicked', self.cancel_post)
+        post_button = Gtk.Button(label='Post')
+        post_button.connect('clicked', self.send_post)
+
+        header.set_title('New Post')
+        header.pack_start(cancel_button)
+        header.pack_end(post_button)
+
+        scroller = Gtk.ScrolledWindow(halign='fill')
+        textarea = Gtk.TextView(
+            left_margin=8,
+            right_margin=8,
+            top_margin=8,
+            bottom_margin=8
+        )
+        textarea.set_wrap_mode(Gtk.WrapMode.WORD)
+        scroller.add(textarea)
+        self.buffer = textarea.get_buffer()
+
+        self.max_length = 256
+        actionbar = Gtk.ActionBar()
+        self.counter_label = Gtk.Label()
+        self.counter_label.set_text(str(self.max_length))
+        actionbar.pack_end(self.counter_label)
+
+        self.buffer.connect('changed', self.validate)
+
+        box.pack_start(header, False, False, 0)
+        box.pack_start(scroller, True, True, 0)
+        box.pack_end(actionbar, False, False, 0)
+        self.add(box)
+
+        self.show_all()
+
+    def validate(self, widget):
+        self.counter = self.max_length - self.buffer.get_char_count()
+        self.counter_label.set_text(str(self.counter))
+
+    def send_post(self, button):
+        start = self.buffer.get_start_iter()
+        end = self.buffer.get_end_iter()
+        text = self.buffer.get_text(start, end, False)
+        pnutpy.api.create_post(data={'text': text})
+        self.close()
+
+    def cancel_post(self, button):
+        self.close()
+
 class LoginPage(Gtk.Box):
 
     __gsignals__ = {