unit uMainForm;

 

interface

 

uses

  System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,

  FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs,

  FMX.Controls.Presentation, FMX.StdCtrls, Windows, FMX.Objects, System.IOUtils,

  FMX.Layouts;

 

type

  TMainForm = class(TForm)

    MaterialOxfordBlueSB: TStyleBook;

    BackgroundImage: TImage;

    Button1: TButton;

    GridPanelLayout1: TGridPanelLayout;

    Button2: TButton;

    Button3: TButton;

    procedure Button1Click(Sender: TObject);

    procedure Button2Click(Sender: TObject);

    procedure Button3Click(Sender: TObject);

  private

    { Private declarations }

  public

    { Public declarations }

    procedure SetWallpaper(APath: String);

  end;

 

var

  MainForm: TMainForm;

 

implementation

 

{$R *.fmx}

 

procedure TMainForm.Button2Click(Sender: TObject);

begin

  SetWallpaper(TPath.Combine(ExtractFilePath(ParamStr(0)),‘delphinaut.jpg’));

end;

 

procedure TMainForm.Button3Click(Sender: TObject);

begin

  SetWallpaper(TPath.Combine(ExtractFilePath(ParamStr(0)),‘cppnaut.jpg’));

end;

 

procedure TMainForm.SetWallpaper(APath: String);

begin

  SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, PChar(APath), SPIF_SENDCHANGE);

end;

 

procedure TMainForm.Button1Click(Sender: TObject);

begin

  SetWallpaper(TPath.Combine(ExtractFilePath(ParamStr(0)),‘radnaut.jpg’));

end;

 

end.