Intel® Fortran Compiler with Windows-Based Applications

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ID 757211
Date 6/30/2025
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Document Table of Contents
Document Table of Contents x
Use Intel® Fortran Compiler to Create and Build Windows-Based Applications
Use Intel® Fortran Compiler to Create and Build Windows-Based Applications x
Create Windowing Applications Create and Use DLLs Use QuickWin Use Dialog Boxes for Application Controls Notices and Disclaimers
Create Windowing Applications x
Understand Code Requirements for Fortran Windowing Applications General Coding Requirements: WinMain Function and USE Statements Code Generation Options Using the Fortran Windowing Application Wizard Single Document Interface or Multiple Document Interface Sample Code Dialog-Based Sample Code Use Menus and Dialogs in SDI and MDI Fortran Windowing Applications Sample Fortran Windowing Applications Advanced Graphics with OpenGL
Create and Use DLLs x
Code Requirements to Share Procedures in DLLs Code Requirements for Sharing Data in DLLs Build Dynamic-Link Libraries Build Executables that Use DLLs
Use QuickWin x
Special Naming Convention for QuickWin and Windows Graphics Routines Compare QuickWin with Windows-Based Applications Use Windows API Routines with QuickWin Types of QuickWin Programs QuickWin User Interface USE Statement Needed for Fortran QuickWin Applications Create QuickWin Windows Use QuickWin Graphics Library Routines
Types of QuickWin Programs x
Fortran Standard Graphics Applications Fortran QuickWin Graphics Applications
QuickWin User Interface x
Default QuickWin Menus
Create QuickWin Windows x
Access Window Properties Create Child Windows Set the Active Window and Add Focus Keep a Child Window Open Control the Size and Position of Windows
Use QuickWin Graphics Library Routines x
Select Display Options Check the Current Graphics Mode Set the Graphics Mode Set Figure Properties Understand Coordinate Systems Add Color Write a Graphics Program Display a Graphics Output Store and Retrieve Images Customize QuickWin Applications QuickWin Programming Precautions Simulate Nonblocking I/O
Understand Coordinate Systems x
Text Coordinates Graphics Coordinates Set Graphics Coordinates Real Coordinates Sample Program
Add Color x
Color Mixing VGA Color Palette Use Text Colors
Write a Graphics Program x
Activate a Graphics Mode Draw Lines on the Screen Draw a Sine Curve Add Shapes
Display a Graphics Output x
Draw Graphics Display Character-Based Text Display Font-Based Characters Use Fonts from the Graphics Library
Use Fonts from the Graphics Library x
Available Typefaces Initialize Fonts Set the Font and Display the Text SHOWFONT.F90 Example
Store and Retrieve Images x
Transfer Images in Memory Load and Save Images to Files Edit Text and Graphics from the QuickWin Edit Menu
Customize QuickWin Applications x
Enhance QuickWin Applications Controlling Menus Change Status Bar and State Messages Display Message Boxes Define an About Box Use Custom Icons Using a Mouse
QuickWin Programming Precautions x
Use Blocking Procedures Use Callback Routines
Use Dialog Boxes for Application Controls x
Use the Resource Editor to Design a Dialog Box Write a Dialog Application Dialog Routine Summary Understand Dialog Controls Use Dialog Controls Use ActiveX Controls
Use the Resource Editor to Design a Dialog Box x
Set Control Properties Include Resources with Multiple Resource Files Include (.FD and .H) Files
Write a Dialog Application x
Initialize and Activate the Dialog Box Use Dialog Callback Routines Use a Modeless Dialog Box Use Fortran AppWizards to Help Add Modal Dialog Box Coding Use Fortran AppWizards to Help Add Modeless Dialog Box Coding Use Dialog Controls in a DLL
Understand Dialog Controls x
Use Control Indexes Available Indexes for Each Dialog Control Specify Control Indexes
Use Dialog Controls x
Use Static Text Use Edit Boxes Use Group Boxes Use Check Boxes and Radio Buttons Use Buttons Use List Boxes and Combo Boxes Use Scroll Bars Use Pictures Use Progress Bars Use Spin Controls Use Sliders Use Tab Controls Set Return Values and Exit
Use ActiveX Controls x
Use the Resource Editor to Insert an ActiveX Control Use the Intel® Fortran Module Wizard to Generate a Module Add Code to Your Application Register an ActiveX Control
Use Intel® Fortran Compiler to Create and Build Windows-Based Applications

Understand Code Requirements for Fortran Windowing Applications

General Coding Requirements: WinMain Function and USE Statements

Coding requirements for Fortran Windowing applications include:

  1. WinMain function declaration and interface.

    The WinMain function declaration and interface are required for Windows Graphical User Interface (GUI) applications (typically use at least the GDI and USER32 Windows Application Programming Interface (API) routines). An interface block for the function declaration can be provided. You must define the following function, with: 

    INTEGER(DWORD) function WinMain (hInstance, hPrevInstance, & & lpszCmdLine, nCmdShow)
use IFWIN
!DEC$ ATTRIBUTES STDCALL, DECORATE, ALIAS:”WinMain”  :: WinMain INTEGER(HANDLE), INTENT(IN) :: hInstance, hPrevInstance
INTEGER(LPVOID), INTENT(IN) :: lpszCmdLine
INTEGER(DWORD), INTENT(IN) :: nCmdShow

    In a program that includes a WinMain function, no program unit can be identified as the main program with the PROGRAM statement.

  2. The statement USE IFWIN or other appropriate USE statements

    The USE IFWIN statement makes available declarations of constants, derived types and procedure interfaces for much of the Windows API routines, also referred to as the Windows API. The Intel® Fortran Compiler also provides individual modules for the various libraries that make up the Windows API, such as KERNEL32 and USER32. Any Fortran program or subprogram that references declarations from the Windows API must include a USE statement for either IFWIN, which collects all the available modules, or the appropriate subset modules for the Windows API libraries that are used.

    If you want to limit the type of parameters and interfaces for Windows applications or if unresolved references occur when linking your Fortran Windowing application, see the Intel® Fortran Compiler Developer Guide and Reference for information on calling Windows API routines.

  3. Data declarations for the WinMain function arguments.

  4. Application-dependent code (other USE statements, variable declarations, and then executable code).

For example, consider the first lines of this sample, which uses free-form source code: 

INTEGER(DWORD) function WinMain (hInstance, hPrevInstance, &
& lpszCmdLine, nCmdShow) 
use IFWIN
!DEC$ ATTRIBUTES STDCALL, DECORATE, ALIAS:”WinMain”  :: WinMain
INTEGER(HANDLE), INTENT(IN) :: hInstance, hPrevInstance
INTEGER(LPVOID), INTENT(IN) :: lpszCmdLine
INTEGER(DWORD), INTENT(IN) :: nCmdShow  
 .
 .
 .

IFWIN.F90 includes a Fortran version (a subset) of the Windows WINDOWS.H header file.

Code Generation Options Using the Fortran Windowing Application Wizard

When you choose the Fortran Windowing Application project type, you will need to select the type of project.

The following choices are available:

  • Empty project

  • Single Document Interface (SDI) sample code

  • Multiple Document Interface (MDI) sample code

  • Dialog-based sample code

  • SDI ActiveX* sample code

  • MDI ActiveX sample code

  • Dialog-based ActiveX sample code

The ActiveX AppWizards will add additional template code for supporting ActiveX controls in your dialog boxes.

Single Document Interface or Multiple Document Interface Sample Code

Creating these types of application requires advanced programming expertise and knowledge of the Windows routines API. Such applications call certain library routines and require the statement USE IFWIN. SDI applications display a single window, whereas MDI application can display multiple windows (a main frame window with one or more child windows that appear within the frame window).

For example, select the MDI option from the Fortran AppWizard screen. After you build and run the application (without changing the source files), a screen might appear after you create two child windows by clicking New from the File menu twice.

If you selected the SDI option from the Fortran AppWizard screen and built and ran the application, you could not create child windows within the main window.

For more information:

Dialog-Based Sample Code

Dialog applications use a dialog box for the application's main window. Creating these applications requires some knowledge of the Windows routines API, but considerably less than for a SDI or MDI application. These applications call certain Intel® Fortran library routines and require the statement USE IFLOGM. Dialog-based applications usually do not have menus.

For example, select the Dialog-based applications from the Fortran AppWizard screen. After you build and run the application (without changing the source files), a dialog box appears.

You can use dialogs in any project type. Dialogs do not require the use of a windowing application if you are using the module IFLOGM.

Parent topic: Create Windowing Applications
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