# 1.2 The Palette Window

The Palette window is the main window of the Boa Constructor Program. Closing the Palette window will terminate the program. The Palette contains two sections, a toolbar, and a multi-pane notebook.

The toolbar gives access to the other windows in the Boa Constructor application. You can hold the mouse pointer over the different icons and help tips will appear. These help tips will tell you what the buttons do.

The notebook (or tabbed pane) provides a set of components which you can use while building your applications. The components are grouped for logical access.

The first group of components is called 'New'. This group provides components for creating new "files", that can be a Python Application, a Python Module, a Setup file, a Boa Application or others..

The icon shown above is used to create a new Boa Application (its tool tip is wx.App, refering to the base class it uses). The new application consists of the application source file (App1.py) and the initial frame (Frame1.py).

The application file is used as the starting point for the application. The default new application simply loads the form. The form is a blank form. You can add components to this form.

Boa constuctor opens the source code for the new application and the new form in the Editor Window.

#### Toolbar Icons - Application

Clicking the first one will bring the Inspector window to the foreground.
Clicking the second one will bring the Editor window to the foreground.
The check box will indicate that a compenent is selected and the text "Nothing selected" will be replaced with e.g. wx.Panel

#### Toolbar Icons - Help

Clicking the first one will bring up Boa help or help for the selected component
Clicking the second one will bring up wxPython help
Clicking the third one will bring up Python help