显示系统托盘列表(并执行隐藏与显示) - 回复 "anybet" 的问题

问题来源: http://www.cnblogs.com/del/archive/2008/12/30/1364557.html#1417716

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本例效果图:

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代码文件:

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unit Unit1;



interface



uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, StdCtrls, ComCtrls;



type

  TForm1 = class(TForm)

    Button1: TButton;

    Button2: TButton;

    Button3: TButton;

    ListView1: TListView;

    procedure FormCreate(Sender: TObject);

    procedure Button1Click(Sender: TObject);

    procedure Button2Click(Sender: TObject);

    procedure Button3Click(Sender: TObject);

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



uses Commctrl;



{获取托盘句柄的函数}

function TrayHWnd: HWND;

var

  h,hTmp: HWND;

begin

  h := FindWindow('Shell_TrayWnd', nil);

  h := FindWindowEx(h, 0, 'TrayNotifyWnd', nil);

  hTmp := FindWindowEx(h, 0, 'SysPager', nil);

  if hTmp <> 0 then h := hTmp;

  hTmp := FindWindowEx(h, 0, 'ToolbarWindow32', nil);

  if hTmp <> 0 then h := hTmp;

  Result := h;

end;



{控件初始化}

procedure TForm1.FormCreate(Sender: TObject);

begin

  ListView1.Align := alLeft;

  ListView1.Columns.Add;

  ListView1.Columns.Items[0].Caption := '托盘图标列表';

  ListView1.Columns.Items[0].Width := 500;

  Listview1.ViewStyle := vsReport;



  Button1.Caption := '显示托盘列表';

  Button2.Caption := '全部隐藏';

  Button3.Caption := '取消隐藏';

  Button2.Enabled := False;

  Button3.Enabled := False;

end;



{提取列表}

procedure TForm1.Button1Click(Sender: TObject);

var

  h: HWND;

  count,size,num: Cardinal;

  pid, ph: Cardinal;

  p: Pointer;

  icoBtn: TTBButton;

  buf: array[0..255] of WideChar;

  i: Integer;

  item: TListItem;

begin

  h := TrayHWnd;

  count := SendMessage(h, TB_BUTTONCOUNT, 0, 0);

  size := SizeOf(TTBButton);



  GetWindowThreadProcessId(h, pid);

  ph := OpenProcess(PROCESS_VM_READ, False, pid);



  for i := 0 to count - 1 do

  begin

    SendMessage(h, TB_GETBUTTON, i, DWORD(p));

    ReadProcessMemory(ph, p, @icoBtn, size, num);

    ReadProcessMemory(ph, Pointer(icoBtn.iString), @buf, Length(buf)*SizeOf(buf[0]), num);

    item := ListView1.Items.Add;

    item.Caption := buf;

  end;

  CloseHandle(ph);



  Button2.Enabled := True;

  Button3.Enabled := True;

end;



{全部隐藏}

procedure TForm1.Button2Click(Sender: TObject);

var

  h: HWND;

  count,i: Cardinal;

begin

  h := TrayHWnd;

  count := SendMessage(h, TB_BUTTONCOUNT, 0, 0);

  for i := 0 to count - 1 do SendMessage(h, TB_HIDEBUTTON, i, 1);

end;



{全部显示}

procedure TForm1.Button3Click(Sender: TObject);

var

  h: HWND;

  count,i: Cardinal;

begin

  h := TrayHWnd;

  count := SendMessage(h, TB_BUTTONCOUNT, 0, 0);

  for i := 0 to count - 1 do SendMessage(h, TB_HIDEBUTTON, i, 0);

end;



end.


 
   

窗体文件:

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object Form1: TForm1

  Left = 0

  Top = 0

  Caption = 'Form1'

  ClientHeight = 142

  ClientWidth = 300

  Color = clBtnFace

  Font.Charset = DEFAULT_CHARSET

  Font.Color = clWindowText

  Font.Height = -11

  Font.Name = 'Tahoma'

  Font.Style = []

  OldCreateOrder = False

  OnCreate = FormCreate

  PixelsPerInch = 96

  TextHeight = 13

  object Button1: TButton

    Left = 182

    Top = 14

    Width = 106

    Height = 25

    Caption = 'Button1'

    TabOrder = 0

    OnClick = Button1Click

  end

  object ListView1: TListView

    Left = 8

    Top = 8

    Width = 169

    Height = 119

    Columns = <>

    TabOrder = 1

  end

  object Button2: TButton

    Left = 182

    Top = 59

    Width = 106

    Height = 25

    Caption = 'Button2'

    TabOrder = 2

    OnClick = Button2Click

  end

  object Button3: TButton

    Left = 182

    Top = 102

    Width = 106

    Height = 25

    Caption = 'Button3'

    TabOrder = 3

    OnClick = Button3Click

  end

end