TNotifyIcon 控件1.01

TNotifyIcon 控件1.01 (Build use Delphi 3.0) 说明:
作用:
 往通知区加图标,并可显示,隐藏,修改这个图标.
 

属性(properties):
 NotifyIcon:TIcon  欲加在通知区的图标
 IsVisible:boolean NotifyIcon是否显示的属性
 Title:string  通知区图标上的提示(最多64个字符)
 PopupMenu:TPopupMenu 点击通知区图标弹出的菜单
 PopupStyle:TPopupStyle 弹出菜单的方式            
  TPopupStyle=Set of
(Left_Click,Right_Click,Left_DbClick,Right_DbClick);
方法(methods):  
   ShowIcon  将图标显示在通知区上
   HideIcon  将通知区上的图标隐藏
   ModifyIcon 修改通知区上的图标(若IsVisible=false,则不显示出来)
   Create(AOwner: TComponent); override; 构造方法
   Destroy; override; 析构方法
事件(Events):
    OnIconMouseDown:
      procedure(Sender:TObject;x,y:Word;WhoButton:TWhoButton) of
Object;
      (
       在Mouse点击通知区上的图标时发生,x,y为Mouse在屏幕上的坐标,
       WhoButton=b_Left为点击左键,WhoButton=b_Right为点击右键,
      )
    OnIconDoubleClick:
      procedure(Sender:TObject;x,y:Word;WhoButton:TWhoButton) of
Object;
     (
      在Mouse双击通知区上的图标时发生,x,y为Mouse在屏幕上的坐标,
      WhoButton=b_Left为双击左键,WhoButton=b_Right为双击右键,
     )
关于Demo:
   这个演示程序给出了TNotifyIcon的基本用法.

包含文件:
 NotifyIcon.dcr
 NotifyIcon.pas
 DemoUnit.pas
 DemoUnit.dfm
 PopUnit.pas
 PopUnit.dfm
 Demo.dpr
 Readme.txt

声明:
TNotifyIcon 控件 V 1.01
1.这是一个免费控件.
2.如果你使用它,请发一个E-Mail给作者,谢谢.
3我在Delphi3.0 & 4.0 上使用成功
4.若要传播它,请完全分发上述8个文件

     作者  南昌大学计算系95(1)  付昱纲 1998.8.17  21:50
     E-mail   [email protected] 

unit NotifyIcon;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,
Dialogs,
  DsgnIntf,ShellApi,ExtCtrls,Menus;

const
      WM_MY_Notify=WM_USER+100;
type

  TPopupStyle=Set of
(Left_Click,Right_Click,Left_DbClick,Right_DbClick);
  TWhoButton=(b_Left,b_Right);
  TMouseEvent=
  procedure(Sender:TObject;x,y:Word;WhoButton:TWhoButton)
      of Object;

//---------class TNotifyIcon---------
  TNotifyIcon = class(TCustomControl)
  private
    { Private declarations }
    FIcon:TIcon;
    FPda:PNOTIFYICONDATA;
    FTitle:string;
    FIconVisible:boolean;
    FPopupMenu:TPopupMenu;
    FPopupStyle:TPopupStyle;
    FOnIconMouseDown:TMouseEvent;
    FOnIconDoubleClick:TMouseEvent;
    procedure SetIcon(Icon:TICON);
    procedure SetTitle(NewTitle:string);
    function IsShowing:boolean;
    procedure ShowIt(Accept:boolean);
    procedure NotifyIconClick(var msg : TMessage);
      Message WM_My_Notify;
  protected
    { Protected declarations }
   public
    { Public declarations }
   property IsVisible:boolean read IsShowing write ShowIt;
   constructor Create(AOwner: TComponent); override;
   procedure ShowIcon;
   procedure HideIcon;
   destructor Destroy; override;
   procedure ModifyIcon(NewIcon:TIcon);
   procedure Paint;override;
  published
    { Published declarations }
    property Height default 33;
    property Width  default 33;
    property NotifyIcon:TIcon read FIcon  write SetIcon;
    property Title:string read FTitle write SetTitle ;
    property OnIconDoubleClick:TMouseEvent
      read FOnIconDoubleClick write FOnIconDoubleClick;
    property OnIconMouseDown:TMouseEvent
      read FOnIconMouseDown write FOnIconMouseDown;
    property PopupMenu:TPopupMenu read FPopupMenu write FPopupMenu;
    property PopupStyle:TPopupStyle read FPopupStyle
                write FPopupStyle default [];
 end;

procedure Register;

implementation

procedure Register;
begin
  RegisterComponents('MyControl', [TNotifyIcon]);
end;

procedure TNotifyIcon.ShowIt(Accept:boolean);
begin
  if  Accept=true then ShowIcon
  else HideIcon;
end;

procedure TNotifyIcon.Paint;
begin
if (csDesigning in ComponentState) then
begin
 Width:=33;
 Height:=33;
 With Canvas do
 begin
  Brush.Color:=clInfoBk;
  Ellipse(0,0,Self.Width,Self.Height);
  Font.Color:=clBlue;
  Brush.Style:=bsClear;
  FloodFill(5,5,clInfoBk,fsBorder);
  Brush.Color:=clInfoBk;
  TextOut(3,Self.Height div 2-6,'Notify');
 end
end;
end;

procedure TNotifyIcon.NotifyIconClick(var msg : TMessage);
 var p:TPoint;
begin
 try
     case msg.LParam of
      WM_LBUTTONDOWN:
        begin
         GetCursorPos(p);
         if Left_Click in FPopupStyle then
         begin
           SetForegroundWindow(ParentWindow);
           FPopupMenu.Popup(p.x,p.y);
         end;
         if Assigned(FOnIconMouseDown) then
         begin
           FOnIconMouseDown(Self,p.x,p.y,b_Left);
         end;
        end;
      WM_RBUTTONDOWN:
        begin
         GetCursorPos(p);
         if Right_Click in  FPopupStyle then
         begin
           SetForegroundWindow(ParentWindow);
           FPopupMenu.Popup(p.x,p.y);
         end;
         if Assigned(FOnIconMouseDown) then
         begin
           FOnIconMouseDown(Self,p.x,p.y,b_Right);
         end;
        end;
      WM_LBUTTONDBLCLK:
        begin
         GetCursorPos(p);
         if Left_DbClick in FPopupStyle then
         begin
           SetForegroundWindow(ParentWindow);
           FPopupMenu.Popup(p.x,p.y);
         end;
         if Assigned(FOnIconDoubleClick) then
         begin
           FOnIconDoubleClick(Self,p.x,p.y,b_Left);
         end;
        end;
      WM_RBUTTONDBLCLk:
        begin
         GetCursorPos(p);
         if Right_Click in FPopupStyle then
         begin
           SetForegroundWindow(ParentWindow);
           FPopupMenu.Popup(p.x,p.y);
         end;
         if Assigned(FOnIconDoubleClick) then
         begin
           FOnIconDoubleClick(Self,p.x,p.y,b_Right);
         end;
        end;
     end;
 except
 end;
end;

function MAKELANGID(p, s:word):Cardinal;
begin
  result:= (((s)shl 10) or(p));
end;

constructor TNotifyIcon.Create(AOwner: TComponent);
begin
try
 inherited Create(AOwner);
 FIcon:=TIcon.Create;
 Height:=36;
 Width:=36;
 Visible:=false;
 FTitle:='Welcome';
 FIconVisible:=false;
 //-------------set tray info---------
 ParentWindow:=TWinControl(AOwner).Handle;
 New(Fpda);
  With FPda^ do
  begin
    uCallbackMessage:=WM_MY_Notify;
    cbsize:=SizeOf(FPda^);
    uID:=200;
    wnd:=Handle;
    uFlags:=NIF_ICON+NIF_Tip+NIF_MESSAGE;
   end;

if (csDesigning in ComponentState) then
begin
 if GetUserDefaultLCID =
MAKELANGID(LANG_CHINESE,SUBLANG_CHINESE_SIMPLIFIED) then
      Application.MessageBox(
    'Write by 南昌大学 付昱纲'#13#13'E-mail:[email protected]'#13#13'
1998.8.17',
    'TNotifyIcon 控件 V 1.01',MB_OK+ MB_ICONINFORMATION)
 else
      Application.MessageBox(
    'Write by NanChang University
FuYuGang'#13#13'E-mail:[email protected]'#13#13'           1998.8.17',
    'TNotifyIcon Component V 1.01',MB_OK+ MB_ICONINFORMATION);
end;
 except
  ShowMessage('TNotifyIcon Create error');
 end;
end;

procedure TNotifyIcon.SetIcon(Icon:TICON);
begin
 FIcon.Assign(Icon);
end;

procedure TNotifyIcon.ShowIcon;
begin
try
 if FIcon.Handle=0 then
 begin
    Exit;
 end;
 if FIcon.Handle<>FPda^.hIcon then
       HideIcon;
 if FIconVisible=false then
 begin
  FPda^.hIcon:=FIcon.handle;
  FIconVisible:=true;
   Shell_NotifyIcon(NiM_ADD,FPda);
 end;
except
 ShowMessage('TNotifyIcon Show Error ');
end;
end;

procedure TNotifyIcon.HideIcon;
begin
try
 if FIconVisible then
 begin
  FIconVisible:=false;
  Shell_NotifyIcon(NiM_DELETE,FPda);
 end;
except
 ShowMessage('TNotifyIcon Hide Error');
end;
end;

procedure TNotifyIcon.SetTitle(NewTitle:string);
begin
 FTitle:=NewTitle;
 StrCopy(FPda^.szTip,PChar(FTitle));
 if FIconVisible then
 begin
   HideIcon;
   ShowIcon;
 end;
end;

destructor TNotifyIcon.Destroy;
begin
try
  HideIcon;
  Dispose(FPda);
  FIcon.Free;
 inherited Destroy;
except
 ShowMessage('TNotifyIcon Destroy Error');
end;
end;

procedure TNotifyIcon.ModifyIcon(NewIcon:TIcon);
begin
try
 SetIcon(NewIcon);
 FPda^.hIcon:=FIcon.handle;
 if FIconVisible  then
   Shell_NotifyIcon(NiM_Modify,FPda);
except
 ShowMessage('TNotifyIcon Modify Error');
end;
end;

function TNotifyIcon.IsShowing:boolean;
begin
  Result:=FIconVisible;
end;

end.

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