TdxAlphaColors Record

Stores TdxAlphaColor equivalents of certain TColor values and provides a set of auxiliary color-related functions.

Declaration

TdxAlphaColors = record

Remarks

Designed to simplify work with TdxAlphaColor values and properties, the TdxAlphaColors type stores the following sets of TdxAlphaColor equivalents of TColor values:

• The standard colors (Black, Maroon, Green, Olive, Purple, Teal, Gray, Silver, Red, Lime, Yellow, Blue, Fuchsia, Aqua, and White);

• The web colors (Snow, Beige, Wheat, AliceBlue, Azure, BlanchedAlmond, Bisque, DarkRed, Coral, Brown, SaddleBrown, Sienna, RosyBrown, YellowGreen, Gold, LightGray, LightGreen, Aquamarine, SeaGreen, DarkBlue, DarkGreen, DarkCyan, DarkMagenta, DimGray, Cyan, SteelBlue, Magenta, and SkyBlue);

• The special colors (Empty, Transparent, and Default).

In addition, the TdxAlphaColors type provides the following class functions:

• Functions that return TdxAlphaColor equivalents of system TColor values (_3DDkShadow, _3DLight, ActiveBorder, ActiveCaption, AppWorkSpace, Background, BtnFace, BtnHighlight, BtnShadow, BtnText, CaptionText, GradientActiveCaption, GradientInactiveCaption, GrayText, Highlight, HighlightText, HotLight, InactiveBorder, InactiveCaption, InactiveCaptionText, InfoBk, InfoText, Menu, MenuBar, MenuHighlight, MenuText, ScrollBar, Window, WindowFrame, and WindowText);

• Functions that extract specific color components from the TdxAlphaColor value (Alpha, B, G, and R);

• Functions that convert the specified TdxAlphaColor value to the HSB representation of an RGB color model (GetHue, GetSaturation, and GetBrightness);

• Functions that create TdxAlphaColor values based on other color values (Blend and FromArgb);

• The function that picks a color similar to the specified reference color from the provided limited set of colors (CalculateNearestColor);

• Informational functions (IsEmpty and IsTransparentOrEmpty);

• Type conversion functions (FromColor and ToColor).

Note

All TdxAlphaColors members, except for the FromArgb class function, return solid colors (their alpha value is set to 255 ($FF)). To create colors with custom transparency levels, call either this class function or the dxColorToAlphaColor global function.