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Vcl.Graphics.TColor

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Delphi

type TColor = -2147483648..2147483647;

Properties

Type Visibility Source Unit Parent
type public Vcl.Graphics.pas Vcl.Graphics Vcl.Graphics

Description

TColor is used to specify the color of a Windows-only control.

TColor is used to specify the color of a Windows-only control. It is used by the Color property of many components and by a number of other properties that specify color values.

The Graphics unit contains definitions of useful constants for TColor. These constants map either directly to the closest matching color in the system palette (for example, clBlue maps to blue) or to the corresponding system screen element color defined in the Color section of the Windows Control panel (for example, clBtnFace maps to the system color for button faces).

If you specify TColor as a specific 4-byte hexadecimal number instead of using the constants defined in the Graphics unit, the low three bytes represent RGB color intensities for blue, green, and red, respectively. The value $00FF0000 (Delphi) or 0x00FF0000 (C++) represents full-intensity, pure blue, $0000FF00 (Delphi) or 0x0000FF00 (C++) is pure green, and $000000FF (Delphi) or 0x000000FF (C++) is pure red. $00000000 (Delphi) or 0x00000000 (C++) is black and $00FFFFFF (Delphi) or 0x00FFFFFF (C++) is white.

If the highest-order byte is zero, the color obtained is the closest matching color in the system palette. If the highest-order byte is one ($01 or 0x01), the color obtained is the closest matching color in the currently realized palette. If the highest-order byte is two ($02 or 0x02), the value is matched with the nearest color in the logical palette of the current device context.

The following table lists the color constants from the Graphics unit. The first two columns list the colors that map to the closest matching color in the system palette, while the last two columns list the colors that are defined in the Windows Control panel.



Value Meaning Value Meaning

clNone

White on Windows 9x, Black on NT.

clScrollBar

Current color for the of scroll bar track.

clAqua

Aqua

clBackground

Current background color of the Windows desktop

clBlack

Black

clActiveCaption

Current color of the title bar of the active window

clBlue

Blue

clInactiveCaption

Current color of the title bar of inactive windows

clCream

Cream

clMenu

Current background color of menus

clDkGray

Dark Gray

clWindow

Current background color of windows

clFuchsia

Fuchsia

clWindowFrame

Current color of window frames

clGray

Gray

clMenuText

Current color of text on menus

clGreen

Green

clWindowText

Current color of text in windows

clLime

Lime green

clCaptionText

Current color of the text on the title bar of the active window

clLtGray

Light Gray

clActiveBorder

Current border color of the active window

clMaroon

Maroon

clInactiveBorder

Current border color of inactive windows

clMedGray

Medium Gray

clAppWorkSpace

Current color of the application workspace

clMoneyGreen

Mint green

clHighlight

Current background color of selected text

clNavy

Navy blue

clHighlightText

Current color of selected text

clOlive

Olive green

clBtnFace

Current color of a button face

clPurple

Purple

clBtnShadow

Current color of a shadow cast by a button

clRed

Red

clGrayText

Current color of text that is dimmed

clSilver

Silver

clBtnText

Current color of text on a button

clSkyBlue

Sky blue

clInactiveCaptionText

Current color of the text on the title bar of an inactive window

clTeal

Teal

clBtnHighlight

Current color of the highlighting on a button

clWhite

White

cl3DDkShadow

Windows 95 or NT 4.0 only: Dark shadow for three-dimensional display elements

clYellow

Yellow

cl3DLight

Windows 95 or NT 4.0 only: Light color for three-dimensional display elements (for edges facing the light source)

clInfoText

Windows 95 or NT 4.0 only: Text color for tool tip controls

clInfoBk

Windows 95 or NT 4.0 only: Background color for tool tip controls

clGradientActiveCaption

Windows 98 or Windows 2000: Right side color in the color gradient of an active window's title bar. clActiveCaption specifies the left side color.

clGradientInactiveCaption

Windows 98 or Windows 2000: Right side color in the color gradient of an inactive window's title bar. clInactiveCaption specifies the left side color.

clDefault

The default color for the control to which the color is assigned.

See Also

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