TColor type
Color type used by most LCL drawing functions.
Declaration
TColor = TGraphicsColorDescription
TColor is an alias for the
TGraphicsColor type in
GraphType.pp from the
LazUtils package. TColor
allows hexadecimal values in the range
-$7FFFFFFF-1..$7FFFFFFF and
represent the minimum and maximum values for the Long data type.
Bytes in the hexadecimal value are used as follows: $OOBBGGRR.
- OO
- Opacity values are not used for standard LCL colors. $1F is reserved for clNone. $20 is reserved for clDefault.
- BB
- Blue color level. $00 is none. $FF is full.
- GG
- Green color level. $00 is none. $FF is full.
- RR
- Red color level. $00 is none. $FF is full.
There are predefined color constants like those in Delphi, such as:
clBlack, clRed, clGreen, and
clBlue. There are extended color constants, like:
clMoneyGreen and clMedGray. There are special color
constants like: clDefault and clNone.
Additionally, there are system color constants like: clWindowText
and clForm. These constants have a color and/or pattern depending
on the users theme, the LCL control, or the drawing tool (Pen, Brush, Font).
See ColorToRGB and RGBToColor.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.