系统托盘相关-总结

1、系统托盘组件 TTrayIcon 简介

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TTrayIcon 的主要属性:

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TrayIcon.Icon
指定托盘图标, 有几种用法:
1、设计时选择;
2、把一个 TIcon 对象给它;
3、使用当前程序图标: TrayIcon1.Icon := Application.Icon;
4、TrayIcon1.SetDefaultIcon; 这也是使用当前程序图标.

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TrayIcon.Icons 与 TrayIcon1.IconIndex
TrayIcon.Icons 对应一个 TImageList, 用 TrayIcon.IconIndex 来指定使用 TImageList 中的第一个图标.
这结合 TrayIcon 的其他功能做出图标动画都没有问题.

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TrayIcon.PopupMenu
TrayIcon.PopupMenu 对应一个 TPopupMenu, 托盘图标一般少不了右键菜单.

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TrayIcon.Visible
隐藏或显示系统托盘的图标; 虽简单、但关键, 因默认是 False.

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TrayIcon.Hint
随鼠标指针的提示文本, 这是老式的, 下面有新型的.

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TrayIcon.BalloonHint、BalloonTitle、BalloonFlags、BalloonTimeout
这都是新型的 Hint 相关的.
TrayIcon.BalloonHint: Hint 文本
TrayIcon.BalloonTitle: Hint 标题
TrayIcon.BalloonFlags: Hint 图标样式
TrayIcon.BalloonTimeout: Hint 停留时间
需要用 TrayIcon 的 ShowBalloonHint 方法启动显示

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TrayIcon.Animate 与 TrayIcon1.AnimateInterval
TrayIcon 的新 Hint(BalloonHint)可设定动画.
TrayIcon.Animate: 这决定是否启用动画
TrayIcon1.AnimateInterval: 动画间隔时间

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TTrayIcon 的主要事件:

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OnAnimate: 写动画代码的事件
OnBalloonClick: 点击 BalloonHint 时...
OnClick: 单击图标时...
OnDblClick
OnMouseDown
OnMouseMove
OnMouseUp

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TTrayIcon 还有两个方法, 前面都已提到了:
TTrayIcon.SetDefaultIcon;
TTrayIcon.ShowBalloonHint;

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使用 Delphi 提供的 TTrayIcon 类, 两三行程序甚至不写程序(设计时选择几下)即可实现.

设计时的准备工作:
1、添加 TTrayIcon、TPopupMenu 控件, TPopupMenu 用于托盘的右键菜单.
2、随意给 TPopupMenu 添加些菜单项.

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代码文件:

---

 

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    TrayIcon1: TTrayIcon;
    PopupMenu1: TPopupMenu;
    aaa1: TMenuItem;
    bbb1: TMenuItem;
    ccc1: TMenuItem;
    procedure FormCreate(Sender: TObject);
    procedure TrayIcon1DblClick(Sender: TObject);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
  {指定图标, 这里是用程序相同的图标; 也可在设计时选择, 还可以指定一个图标组, 再用 IconIndex 切换}
  TrayIcon1.Icon := Application.Icon;
  {指定右键菜单}
  TrayIcon1.PopupMenu := PopupMenu1;
  {使之可见}
  TrayIcon1.Visible := True;
end;

{给图标添加到双击事件}
procedure TForm1.TrayIcon1DblClick(Sender: TObject);
begin
  ShowMessage('OnDblClick');
end;

end.

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窗体文件:

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object Form1: TForm1
  Left = 0
  Top = 0
  Caption = 'Form1'
  ClientHeight = 206
  ClientWidth = 339
  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 TrayIcon1: TTrayIcon
    OnDblClick = TrayIcon1DblClick
    Left = 152
    Top = 88
  end
  object PopupMenu1: TPopupMenu
    Left = 216
    Top = 88
    object aaa1: TMenuItem
      Caption = 'aaa'
    end
    object bbb1: TMenuItem
      Caption = 'bbb'
    end
    object ccc1: TMenuItem
      Caption = 'ccc'
    end
  end
end

=========================================================================================

 

代码文件:

---

 

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    TrayIcon1: TTrayIcon;
    Button1: TButton;
    procedure TrayIcon1Click(Sender: TObject);
    procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
    procedure Button1Click(Sender: TObject);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

{关闭}
procedure TForm1.Button1Click(Sender: TObject);
begin
  Application.Terminate;
end;

{点击关闭按钮时让窗体最小化到系统托盘}
procedure TForm1.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
  Tag := Ord(WindowState);
  WindowState := wsMinimized;
  TrayIcon1.SetDefaultIcon;
  TrayIcon1.Visible := True;
  Hide;
  CanClose := False;
end;

{点击系统托盘中的图标恢复窗口}
procedure TForm1.TrayIcon1Click(Sender: TObject);
begin
  TrayIcon1.Visible := False;
  Show;
  WindowState := TWindowState(tag);
  SetForegroundWindow(Handle);
end;

end.

---

窗体文件:

---

 

object Form1: TForm1
  Left = 0
  Top = 0
  Caption = 'Form1'
  ClientHeight = 206
  ClientWidth = 339
  Color = clBtnFace
  Font.Charset = DEFAULT_CHARSET
  Font.Color = clWindowText
  Font.Height = -11
  Font.Name = 'Tahoma'
  Font.Style = []
  OldCreateOrder = False
  OnCloseQuery = FormCloseQuery
  PixelsPerInch = 96
  TextHeight = 13
  object Button1: TButton
    Left = 232
    Top = 40
    Width = 75
    Height = 25
    Caption = 'Button1'
    TabOrder = 0
    OnClick = Button1Click
  end
  object TrayIcon1: TTrayIcon
    OnClick = TrayIcon1Click
    Left = 160
    Top = 104
  end
end

---

 

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4、2012.08.03--我自己测试发现----------

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点击最小化的时候 窗体 最小化 原理-----和--代码

 

procedure TfrmSmsEmailMain.FormResize(Sender: TObject);
begin
  {点击最小化时候,最小化到系统托盘}
  case frmSmsEmailMain.WindowState of
    wsMinimized: begin
                    Tag := Ord(WindowState);
                    WindowState := wsMinimized;
                    Hide;
                 end;
  end;

  //或代码
  if frmSmsEmailMain.WindowState = wsMinimized then
  begin
    Tag := Ord(WindowState);
    WindowState := wsMinimized;
    Hide;
  end;
end;