随心所欲取颜色(鼠标经过的地方颜色值均可取到)

unit Ugetcor;

interface

uses

SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls,

Forms, Dialogs, StdCtrls, ExtCtrls, Buttons;

type

Tgetcol = class(TForm)

Panel1: TPanel;

Label1: TLabel;

Label2: TLabel;

procedure FormClick(Sender: TObject);

procedure FormMouseMove(Sender: TObject; Shift: TShiftState; X,

Y: Integer);

procedure Panel1Click(Sender: TObject);

procedure FormDblClick(Sender: TObject);

procedure FormResize(Sender: TObject);

private

tx,ty : integer;

procedure WMEraseBkng(var MSg:TWMEraseBkgnd);message WM_ERASEBKGND;

public

{ Public declarations }

end;

var

getcol: Tgetcol;

implementation

{$R *.DFM}

const

Digits : array[0..$F] of Char = '0123456789ABCDEF';

function HexB(B : Byte) : string;

{-Return hex string for byte}

begin

HexB[0] := #2;

HexB[1] := Digits[B shr 4];

HexB[2] := Digits[B and $F];

end;

procedure Tgetcol.WMEraseBkng(var MSg:TWMEraseBkgnd);

begin

Msg.Result:=1;

end;

procedure Tgetcol.FormClick(Sender: TObject);

var t : tcolor;

r,g,b : byte;

begin

t := canvas.pixels[tx,ty];

r := getRvalue(t);

g := getGvalue(t);

B := getBvalue(t);

LABEL2.COLOR := T;

LABEL1.CAPTION := '$00' + HEXB(R) + HEXB(G) + HEXB(B);

end;

procedure Tgetcol.FormMouseMove(Sender: TObject; Shift: TShiftState; X,

Y: Integer);

begin

tx := x;

ty := y;

end;

procedure Tgetcol.Panel1Click(Sender: TObject);

begin

CLOSE;

end;

procedure Tgetcol.FormDblClick(Sender: TObject);

begin

close;

end;

procedure Tgetcol.FormResize(Sender: TObject);

begin

panel1.top := height - panel1.height -1;

panel1.left := width - panel1.width -1;

panel1.visible := true;

end;

end.

只需要将其加入你的任意一个工程文件中，便可运行！！