unit1.pas

Delphi7应用编程150例附书源码.rar

unit Unit1;

interface

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

type
  TfrmMain = class(TForm)
    CheckBox1: TCheckBox;
    CheckBox2: TCheckBox;
    procedure CheckBox1Click(Sender: TObject);
    procedure CheckBox2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  frmMain: TfrmMain;

implementation

{$R *.dfm}

procedure TfrmMain.CheckBox1Click(Sender: TObject);
var
    wndHandle : THandle;
    wndClass : array[0..50] of Char;
begin
    StrPCopy(@wndClass[0], 'Shell_TrayWnd');
    wndHandle := FindWindow(@wndClass[0], nil);
    if self.CheckBox1.Checked then
    begin
        ShowWindow(wndHandle, SW_HIDE);
    end
    else
    begin
        ShowWindow(wndHandle, SW_RESTORE);
    end;
end;

procedure TfrmMain.CheckBox2Click(Sender: TObject);
var
    wndHandle : THandle;
    wndClass : array[0..50] of Char;
begin
    StrPCopy(@wndClass[0], 'Progman');
    wndHandle := FindWindow(@wndClass[0], nil);
    if self.CheckBox2.Checked then
    begin
        ShowWindow(wndHandle, SW_HIDE);
    end
    else
    begin
        ShowWindow(wndHandle, SW_RESTORE);
    end;
end;

end.