Wie binde ich diesen Code ein? (ColorButton)

[juergen]

Hallo zusammen,
ich habe im SwissDelphiCenter nachfolgenden Source gefunden, welchen ich gern austesten würde.
Nur weiß ich nicht wie ich das einbinden muss, damit ich diesen Button entsprechend erzeugen kann.
Ich habe probiert das als neue VCL Komponente zu installieren, aber unter Samples finde ich da nichts neues...

Da ich sowas noch nie gemacht habe, weiß ich nicht wo ich was machen machen muss...
Kann mir hier jemand die grundlegende Vorgehensweise erklären?
Danke schon mal vorab!

Delphi-Quellcode:

unit ColorButton;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, StdCtrls, Buttons, ExtCtrls;

type
  TColorButton = class(TButton)
  private
    FBackBeforeHoverColor: TColor;
  private
    FCanvas: TCanvas;
    IsFocused: Boolean;
    FBackColor: TColor;
    FForeColor: TColor;
    FHoverColor: TColor;
    procedure SetBackColor(const Value: TColor);
    procedure SetForeColor(const Value: TColor);
    procedure SetHoverColor(const Value: TColor);

    property BackBeforeHoverColor: TColor read FBackBeforeHoverColor
      write FBackBeforeHoverColor;
  protected
    procedure CreateParams(var Params: TCreateParams); override;
    procedure WndProc(var Message: TMessage); override;

    procedure SetButtonStyle(Value: Boolean); override;
    procedure DrawButton(Rect: TRect; State: UINT);

    procedure CMEnabledChanged(var Message: TMessage); message CM_ENABLEDCHANGED;
    procedure CMFontChanged(var Message: TMessage); message CM_FONTCHANGED;
    procedure CNMeasureItem(var Message: TWMMeasureItem); message CN_MEASUREITEM;
    procedure CNDrawItem(var Message: TWMDrawItem); message CN_DRAWITEM;
  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;

  published
    property BackColor: TColor read FBackColor write SetBackColor default clBtnFace;
    property ForeColor: TColor read FForeColor write SetForeColor default clBtnText;
    property HoverColor: TColor read FHoverColor write SetHoverColor default clBtnFace;

  end;

procedure Register;

implementation


constructor TColorButton.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FCanvas := TCanvas.Create;
  BackColor := clBtnFace;
  ForeColor := clBtnText;
  HoverColor := clBtnFace;
end; (*Create*)

destructor TColorButton.Destroy;
begin
  FCanvas.Free;
  inherited Destroy;
end; (*Destroy*)

procedure TColorButton.WndProc(var Message: TMessage);
begin
  if (Message.Msg = CM_MOUSELEAVE) then
  begin
    BackColor := BackBeforeHoverColor;
    Invalidate;
  end;
  if (Message.Msg = CM_MOUSEENTER) then
  begin
    BackBeforeHoverColor := BackColor;

    BackColor := HoverColor;
    Invalidate;
  end;

  inherited;
end; (*WndProc*)

procedure TColorButton.CreateParams(var Params: TCreateParams);
begin
  inherited CreateParams(Params);
  with Params do Style := Style or BS_OWNERDRAW;
end; (*CreateParams*)



procedure TColorButton.SetButtonStyle(Value: Boolean);
begin
  if Value <> IsFocused then
  begin
    IsFocused := Value;
    Invalidate;
  end;
end; (*SetButtonStyle*)

procedure TColorButton.CNMeasureItem(var Message: TWMMeasureItem);
begin
  with Message.MeasureItemStruct^ do
  begin
    itemWidth := Width;
    itemHeight := Height;
  end;
end; (*CNMeasureItem*)

procedure TColorButton.CNDrawItem(var Message: TWMDrawItem);
var
  SaveIndex: Integer;
begin
  with Message.DrawItemStruct^ do
  begin
    SaveIndex := SaveDC(hDC);
    FCanvas.Lock;
    try
      FCanvas.Handle := hDC;
      FCanvas.Font := Font;
      FCanvas.Brush := Brush;
      DrawButton(rcItem, itemState);
    finally
      FCanvas.Handle := 0;
      FCanvas.Unlock;
      RestoreDC(hDC, SaveIndex);
    end;
  end;
  Message.Result := 1;
end; (*CNDrawItem*)

procedure TColorButton.CMEnabledChanged(var Message: TMessage);
begin
  inherited;
  Invalidate;
end; (*CMEnabledChanged*)

procedure TColorButton.CMFontChanged(var Message: TMessage);
begin
  inherited;
  Invalidate;
end; (*CMFontChanged*)


procedure TColorButton.SetBackColor(const Value: TColor);
begin
  if FBackColor <> Value then
  begin
    FBackColor := Value;
    Invalidate;
  end;
end; (*SetButtonColor*)

procedure TColorButton.SetForeColor(const Value: TColor);
begin
  if FForeColor <> Value then
  begin
    FForeColor := Value;
    Invalidate;
  end;
end; (*SetForeColor*)

procedure TColorButton.SetHoverColor(const Value: TColor);
begin
  if FHoverColor <> Value then
  begin
    FHoverColor := Value;
    Invalidate;
  end;
end; (*SetHoverColor*)

procedure TColorButton.DrawButton(Rect: TRect; State: UINT);
var
  Flags, OldMode: Longint;
  IsDown, IsDefault, IsDisabled: Boolean;
  OldColor: TColor;
  OrgRect: TRect;
  rgn: HRGN;
begin
  OrgRect := Rect;
  Flags := DFCS_BUTTONPUSH or DFCS_ADJUSTRECT;
  IsDown := State and ODS_SELECTED <> 0;
  IsDefault := State and ODS_FOCUS <> 0;
  IsDisabled := State and ODS_DISABLED <> 0;
  if IsDown then Flags := Flags or DFCS_PUSHED;
  if IsDisabled then Flags := Flags or DFCS_INACTIVE;

  if IsFocused or IsDefault then
  begin
    FCanvas.Pen.Color := clWindowFrame;
    FCanvas.Pen.Width := 1;
    FCanvas.Brush.Style := bsClear;

    FCanvas.Rectangle(Rect.Left, Rect.Top, Rect.Right, Rect.Bottom);
    InflateRect(Rect, - 1, - 1);
  end;

  if IsDown then
  begin
    FCanvas.Pen.Color := clBtnShadow;
    FCanvas.Pen.Width := 1;
    FCanvas.Brush.Color := clBtnFace;
    FCanvas.Rectangle(Rect.Left, Rect.Top, Rect.Right, Rect.Bottom);
    InflateRect(Rect, - 1, - 1);
  end
  else
  begin
    DrawFrameControl(FCanvas.Handle, Rect, DFC_BUTTON, Flags);
  end;

  if IsDown then OffsetRect(Rect, 1, 1);

  OldColor := FCanvas.Brush.Color;
  FCanvas.Brush.Color := BackColor;
  FCanvas.FillRect(Rect);
  FCanvas.Brush.Color := OldColor;
  OldMode := SetBkMode(FCanvas.Handle, TRANSPARENT);
  FCanvas.Font.Color := ForeColor;
  if IsDisabled then
    DrawState(FCanvas.Handle, FCanvas.Brush.Handle, nil, Integer(Caption), 0,
    ((Rect.Right - Rect.Left) - FCanvas.TextWidth(Caption)) div 2,
    ((Rect.Bottom - Rect.Top) - FCanvas.TextHeight(Caption)) div 2,
      0, 0, DST_TEXT or DSS_DISABLED)
  else
    DrawText(FCanvas.Handle, PChar(Caption), - 1, Rect,
      DT_SINGLELINE or DT_CENTER or DT_VCENTER);

  SetBkMode(FCanvas.Handle, OldMode);

  if IsFocused and IsDefault then
  begin
    Font.Style := Font.Style + [fsBold];
  end
  else
  begin
    Font.Style := Font.Style - [fsBold];
  end;

  rgn := CreateRoundRectRgn(3,3,Width - 2,Height - 2,10,10);
  SetWindowRgn(Handle, rgn, True);
end; (*DrawButton*)

procedure Register;
begin
  RegisterComponents('mhm', [TColorButton]);
end;




end.
//enjoye it