Using Intel® Visual Fortran to Create and Build Windows*-Based Applications

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ID 757211
Date 7/23/2021
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Document Table of Contents
Document Table of Contents x
Using Intel® Visual Fortran Compiler to Create and Build Windows*-Based Applications
Using Intel® Visual Fortran Compiler to Create and Build Windows*-Based Applications x
Legal Information Introduction Creating Windowing Applications Creating and Using DLLs Using QuickWin Using Dialog Boxes for Application Controls
Introduction x
Notational Conventions Related Information
Creating Windowing Applications x
Understanding Coding Requirements for Fortran Windowing Applications Using Menus and Dialogs in SDI and MDI Fortran Windowing Applications Sample Fortran Windows Applications Advanced Graphics Using OpenGL
Creating and Using DLLs x
Coding Requirements for Sharing Procedures in DLLs Coding Requirements for Sharing Data in DLLs Building Dynamic-Link Libraries Building Executables that Use DLLs
Using QuickWin x
Special Naming Convention for Certain QuickWin and Windows* Graphics Routines Comparing QuickWin with Windows*-Based Applications Using Windows API Routines with QuickWin Types of QuickWin Programs The QuickWin User Interface USE Statement Needed for Fortran QuickWin Applications Creating QuickWin Windows Using QuickWin Graphics Library Routines
Types of QuickWin Programs x
Fortran Standard Graphics Applications Fortran QuickWin Graphics Applications
The QuickWin User Interface x
Default QuickWin Menus
Creating QuickWin Windows x
Accessing Window Properties Creating Child Windows Giving a Window Focus and Setting the Active Window Keeping Child Windows Open Controlling Size and Position of Windows
Using QuickWin Graphics Library Routines x
Selecting Display Options Checking the Current Graphics Mode Setting the Graphics Mode Setting Figure Properties Understanding Coordinate Systems Adding Color Writing a Graphics Program Displaying Graphics Output Storing and Retrieving Images Customizing QuickWin Applications QuickWin Programming Precautions Simulating Nonblocking I/O
Understanding Coordinate Systems x
Text Coordinates Graphics Coordinates Setting Graphics Coordinates Real Coordinates Sample Program
Adding Color x
Color Mixing VGA Color Palette Using Text Colors
Writing a Graphics Program x
Activating a Graphics Mode Drawing Lines on the Screen Drawing a Sine Curve Adding Shapes
Displaying Graphics Output x
Drawing Graphics Displaying Character-Based Text Displaying Font-Based Characters Using Fonts from the Graphics Library
Using Fonts from the Graphics Library x
Available Typefaces Initializing Fonts Setting the Font and Displaying Text SHOWFONT.F90 Example
Storing and Retrieving Images x
Transferring Images in Memory Loading and Saving Images to Files Editing Text and Graphics from the QuickWin Edit Menu
Customizing QuickWin Applications x
Enhancing QuickWin Applications Controlling Menus Changing Status Bar and State Messages Displaying Message Boxes Defining an About Box Using Custom Icons Using a Mouse
QuickWin Programming Precautions x
Using Blocking Procedures Using Callback Routines
Using Dialog Boxes for Application Controls x
Using the Resource Editor to Design a Dialog Box Writing a Dialog Application Summary of Dialog Routines Understanding Dialog Controls Using Dialog Controls Using ActiveX* Controls
Using the Resource Editor to Design a Dialog Box x
Setting Control Properties Including Resources Using Multiple Resource Files The Include (.FD and .H) Files
Writing a Dialog Application x
Initializing and Activating the Dialog Box Using Dialog Callback Routines Using a Modeless Dialog Box Using Fortran AppWizards to Help Add Modal Dialog Box Coding Using Fortran AppWizards to Help Add Modeless Dialog Box Coding Using Dialog Controls in a DLL
Understanding Dialog Controls x
Using Control Indexes Available Indexes for Each Dialog Control Specifying Control Indexes
Using Dialog Controls x
Using Static Text Using Edit Boxes Using Group Boxes Using Check Boxes and Radio Buttons Using Buttons Using List Boxes and Combo Boxes Using Scroll Bars Using Pictures Using Progress Bars Using Spin Controls Using Sliders Using Tab Controls Setting Return Values and Exiting
Using ActiveX* Controls x
Using the Resource Editor to Insert an ActiveX Control Using the Intel® Fortran Module Wizard to Generate a Module Adding Code to Your Application Registering an ActiveX Control
Using Intel® Visual Fortran Compiler to Create and Build Windows*-Based Applications

Color Mixing

If you have a VGA machine, you are restricted to displaying at most 256 colors at a time. These 256 colors are held in a palette. You can choose the palette colors from a range of 262,144 colors (256K), but only 256 at a time. Some display adapters (most SVGAs) are capable of displaying all of the 256K colors and some (true color display adapters) are capable of displaying 256 * 256 * 256 = 16.7 million colors.

If you use a palette, you are restricted to the colors available in the palette. In order to access all colors available on your system, you need to specify an explicit Red-Green-Blue (RGB) value, not a palette index.

When you select a color index, you specify one of the colors in the system's predefined palette. SETCOLOR, SETBKCOLOR, and SETTEXTCOLOR set the current color, background color, and text color to a palette index.

SETCOLORRGB, SETBKCOLORRGB, and SETTEXTCOLORRGB set the colors to a color value chosen from the entire available range. When you select a color value, you specify a level of intensity with a range of 0 - 255 for each of the red, green, and blue color values. The long integer that defines a color value consists of 3 bytes (24 bits) as follows:

  MSB                    LSB
  BBBBBBBB GGGGGGGG RRRRRRRR

where R, G, and B represent the bit values for red, green, and blue intensities. To mix a light red (pink), turn red all the way up and mix in some green and blue:

  10000000 10000000 11111111

In hexadecimal notation, this number equals #8080FF. To set the current color to this value, you can use the function:

  i = SETCOLORRGB (#8080FF)

You can also pass decimal values to this function. Keep in mind that 1 (binary 00000001, hex 01) represents a low color intensity and that 255 (binary 11111111, hex FF) equals full color intensity. To create pure yellow (100-percent red plus 100-percent green) use this line:

  i = SETCOLORRGB( #00FFFF )

For white, turn all of the colors on:

  i = SETCOLORRGB( #FFFFFF)

For black, set all of the colors to 0:

  i = SETCOLORRGB( #000000)

RGB values for example colors are in the following table.

RGB Color Values

Color

RGB Value

Color

RGB Value

Black

#000000

Bright White

#FFFFFF

Dull Red

#000080

Bright Red

#0000FF

Dull Green

#008000

Bright Green

#00FF00

Dull Yellow

#008080

Bright Yellow

#00FFFF

Dull Blue

#800000

Bright Blue

#FF0000

Dull Magenta

#800080

Bright Magenta

#FF00FF

Dull Turquoise

#808000

Bright Turquoise

#FFFF00

Dark Gray

#808080

Light Gray

#C0C0C0

If you have a 64K-color machine and you set an RGB color value that is not equal to one of the 64K preset RGB color values, the system approximates the requested RGB color to the closest available RGB value. The same thing happens on a VGA machine when you set an RGB color that is not in the palette. (You can remap your VGA color palette to different RGB values; see VGA Color Palette.)

However, although your graphics are drawn with an approximated color, if you retrieve the color with GETCOLORRGB, GETBKCOLORRGB, or GETTEXTCOLORRGB, the color you specified is returned, not the actual color used. This is because the SETCOLORRGB functions do not execute any graphics, they simply set the color and the approximation is made when the drawing is made (by ELLIPSE or ARC , for example).

GETPIXELRGB and GETPIXELSRGB do return the approximated color actually used, because SETPIXELRGB and SETPIXELSRGB actually set a pixel to a color on the screen and the approximation, if any, is made at the time they are called.

Parent topic: Adding Color
Level Two Title