点灯游戏--一个动态创建组件的示例

2019-04-14 16:57发布生成海报

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{点灯游戏--一个动态创建组件的示例Tips : 在动态创建组件时, Parent属性设定很重要, 如果不设定, 组件是不能显示的~~ 呵呵, 这个是易犯的低级错误, 至少对我来说.}

unit ULamp;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls;

type
  TFormLamp = class(TForm)
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  protected
    procedure PanelClickHandle(Sender: TObject);
  end;

function IsFinished: Boolean;


var
  FormLamp: TFormLamp;
  LampPanel : array[0..24] of TPanel;


implementation

{$R *.dfm}

function IsFinished: Boolean;
var
  i: Integer;
begin
  Result := True;
  for i := 0 to 24 do
  begin
    if (LampPanel[i].Color = $006060) then Result := Result and False;
  end;
end;  

procedure  TFormLamp.PanelClickHandle(Sender: TObject);
var
  X,Y: Integer;
  ThisTag: Integer;
begin
  {
     上: (X,Y-1); 下: (X,Y+1), 左: (X-1,Y), 右: (X+1,Y);
  }
   ThisTag := (Sender as TPanel).Tag;
   X := ThisTag div 5;
   Y := ThisTag mod 5;
   LampPanel[ThisTag].Color := $ffffff - LampPanel[ThisTag].Color;
   if (Y>0) then LampPanel[X*5+Y-1].Color := $ffffff - LampPanel[X*5+Y-1].Color;
   if (X>0) then LampPanel[(X-1)*5+Y].Color := $ffffff - LampPanel[(X-1)*5+Y].Color;
   if (Y<4) then LampPanel[X*5+Y+1].Color := $ffffff - LampPanel[X*5+Y+1].Color;
   if (X<4) then LampPanel[(X+1)*5+Y].Color := $ffffff - LampPanel[(X+1)*5+Y].Color;

   // 检查是否都点亮
   if IsFinished then ShowMessage('你真行, 所有的灯都点亮了!!');
  //(Sender as TPanel).Color := $ffffff - (Sender as TPanel).Color;
end;

procedure TFormLamp.FormCreate(Sender: TObject);
var
  i,j: Integer;
begin
   Position := poScreenCenter;

  for i := 0 to 4  do
    for j := 0 to 4 do
    begin
      LampPanel[i * 5 + j] := TPanel.Create(Self);
      with LampPanel[i * 5 + j] do
      begin
        Tag := i * 5 + j;
        Caption := IntToStr(Tag);
        Parent := Self;
        Top := 70 + i * 60;
        Left := 100 + j * 50;
        Width := 55;
        Height := 55;
        Color := $006060;
        OnClick := PanelClickHandle;
      end;
    end; 
end;

procedure TFormLamp.FormDestroy(Sender: TObject);
var
  i : Integer;
begin
  for i := 0  to 24 do
    if LampPanel[i] <> nil then LampPanel[i].Free;
end;

end.

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点灯游戏--一个动态创建组件的示例
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