The Silverfrost FTN95 default installation includes a number of programs that illustrate the use of ClearWin+. These are installed to a folder of the form \Users\xxx\Documents\FTN95 Examples\clearwin. Particular attention should be given to the demonstration programs that illustrate the use of the ClearWin+ function winio@ and to the 'Browse' application that is typically found in \Program Files (x86)\Silverfrost\FTN95.
The following instructions explain how to compile, link and execute a very simple Windows application without using winio@.
Consider a program to calculate the squares of a sequence of numbers and print them out.
In Fortran this takes the form:
PRINT *,idx,' Squared is ', idx*idx
Using your editor, type in the above program and save it as (say) test.for.
Open a DOS box and enter a command line of the form:
FTN95 TEST /LINK
This will produce an executable file called test.exe that can be run from the Program Manager in the normal way or by entering:
at the DOS box command line.
The above procedure will run your test program and display a window that presents the output. This program illustrates how ClearWin+ can be used to convert a simple DOS application without the need to attend to any Windows programming features. It automatically generates what is called a ClearWin window that handles the input and output in a Windows environment.
Further information about compiling and linking is given in Compiling and linking whilst ClearWin windows gives detailed information about using ClearWin windows. A major part of this guide deals with what are called format windows using winio@. Format windows provide a quick and easy method for developing fully featured Windows applications.