WEL TUTORIAL 

Step 1: Creating an application

All Windows programs have a window called main window that appears when the user starts the program. In WEL, this window is owned by the application which is responsible for creating and displaying the main window, processing Windows messages and terminating the application.

Every WEL application must define its own descendant of WEL_APPLICATION in order to define the deferred function main_window as follows:

class
	APPLICATION

inherit
	WEL_APPLICATION

creation
	make

feature

	main_window: WEL_FRAME_WINDOW  is
			-- Create the application's main window.
		once
			!! Result.make_top ("My application")
		end
	

end-- class APPLICATION

This class is the minimal WEL application, if you run it you will get an empty frame window that can be moved, resized, maximized, minimized and closed. Figure 2 shows the appearance of the application.

Figure 2

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