A good overview of the Smalltalk Language can be found on Wikipedia.
LSWVST uses native Widgets, which are availabe in LSWVST Orthogonality.
Please read our differences to VSE Page . If you plan to migrate a legacy VSE application, you should visit the VSE migration page.
Invoke LSWVST-setup.exe and install LSWVST in your preferred File-location. After successful installation you should have
a few sub directories ( Libraries / Repositories / Images / Virtual-Machines ).
Double-clicking Lswvst-dev.exe will bring up LSWVST's development environment.
Until you activate LSWVST you will not be able to use essential functions for commercial software-development:
LSWVST TinyDev brings you back to the 80ies, a Class-Hierarchy-Browser, a Class-Browser a Workspace, a Transcript a Message-Browser and a Debugger-Window. For small programs and educational purposes this is enough.
LSWVST Team-Environment is what you need to develop LSWVST-programs.Your main Browser is the Package-Browser.
To create your final program you several steps:
It is not recommended - but possible to use an image-file for production. Image-Files represent "Snapshots" of the Object-World during development and should not be abused to save some initialization-coding.
This is the equivalent to a small Win32 executable written in LSWAsm
call osMessageBox &NULL Z$'LSWVST-Helloworld' &MB_SYSTEMMODAL &MB_OK
call osExitProcess 0
the resulting executable is about 11 KByte.
define a subclass of the MessageBox class
indexable type: none instance variables: '' class variables: '' class instance variables: ''
add a HelloworldMessageBox visitee ( using add Text visitee refactoring menu in Package-Browser )
define a HellowordApplication class as subclass of ApplicationSession_Strategy ( using Package-Browser add subclass Menu )
invoke the MessageBox in the Helloworld-Application
( HelloworldMessageBox forOwner: self desktopWindow ) createWindow.
self currentSession quit
after testing the Helloworld application you create the executable. This is done in a few steps:
the resulting executable is about 30 KByte.