TColor 与 RGB 的互转

aaie_ 2012-10-11

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TColor 与 RGB 的互转

先晒个图^_^

unit Unit1; 
  
interface
  
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, 
  Dialogs, StdCtrls; 
  
type
  TForm1 = class(TForm) 
    Edit1: TEdit; 
    GroupBox1: TGroupBox; 
    StaticText1: TStaticText; 
    Edit2: TEdit; 
    Edit3: TEdit; 
    Edit4: TEdit; 
    Label1: TLabel; 
    Label2: TLabel; 
    Label3: TLabel; 
    Button1: TButton; 
    Button2: TButton; 
    Button3: TButton; 
    Button4: TButton; 
    procedure 
Button1Click(Sender: TObject); 
    procedure 
Button2Click(Sender: TObject); 
    procedure 
Button3Click(Sender: TObject); 
  private
    { Private declarations }
  public
    { Public declarations }
  end; 
  
var
  Form1: TForm1; 
  
implementation
  
{$R *.dfm}
var
  c:TColor; 
procedure 
TForm1.Button1Click(Sender: TObject); //TColor转RGB 
begin
  c:=StringToColor(Edit1.Text); 
  Edit1.Color:=c; 
  Edit2.Text:='$' 
+ IntToHex(GetRValue(c),2); 
  Edit3.Text:='$' 
+ IntToHex(GetGValue(c),2); 
  Edit4.Text:='$' 
+ IntToHex(GetBValue(c),2); 
end; 
  
procedure 
TForm1.Button2Click(Sender: TObject); //RGB转TColor 
var
  str:string; 
  r,g,b:Byte; 
begin
    R:=StrToInt(Edit2.Text); 
    G:=StrToInt(Edit3.Text); 
    B:=StrToInt(Edit4.Text); 
  
  str:='$00' 
+ IntToHex(b,2) + IntTohex(g,2) + IntTohex(r,2); 
  Edit1.Color:=StrToInt(str); 
  Edit1.Text:=str; 
end; 
  
procedure 
TForm1.Button3Click(Sender: TObject);//清空(不是真的清空，只是懒得每次都输入'$'这个符号) 
begin
Edit1.Text:='$'; 
Edit2.Text:='$'; 
Edit3.Text:='$'; 
Edit4.Text:='$'; 
end; 
end.