??? 在Delphi 7下要制作系统托盘，只能制作一个比较简单的系统托盘，因为ShellAPI文件定义的TNotifyIconData结构体是比较早的版本。定义如下：
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? |
_NOTIFYICONDATAA?=?record?
??cbSize:?DWORD;?
??Wnd:?HWND;?
??uID:?UINT;?
??uFlags:?UINT;?
??uCallbackMessage:?UINT;?
??hIcon:?HICON;?
??szTip:?array?[0..63]?of?AnsiChar;?
end;? |
下面开始实现下最小化到系统托盘功能：
1.新建应用程序，然后在“菜单栏”→“Project”→“Options”→”Application“为程序设定下标题和图标，一定得设置图标，不让显示系统托盘的时候就会空白；
2.在窗体上放置一个右键菜单，添加两个菜单项，如下图所示：
3.窗体单元文件代码如下：
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unit?Unit1;?
?
interface?
?
uses?
??Windows,?Messages,?SysUtils,?Variants,?Classes,?Graphics,?Controls,?Forms,?
??Dialogs,?ShellAPI,?Menus;?
?
const?
??WM_TRAYMSG?=?WM_USER?+?101;???????????????????//自定义托盘消息?
type?
??TForm1?=?class(TForm)?
????pm1:?TPopupMenu;?
????mniN1:?TMenuItem;?
????mniwo1:?TMenuItem;?
????procedure?FormCreate(Sender:?TObject);?
????procedure?FormDestroy(Sender:?TObject);?
????procedure?mniN1Click(Sender:?TObject);?
??private?
????procedure?WMTrayMsg(var?Msg:?TMessage);message?WM_TRAYMSG;????//声明托盘消息?
????procedure?WMSysCommand(var?Msg:?TMessage);message?WM_SYSCOMMAND;?
??public?
????{?Public?declarations?}?
??end;?
?
var?
??Form1:?TForm1;?
??NotifyIcon:?TNotifyIconData;????????????????????//定义托盘图标结构体?
implementation?
?
{$R?*.dfm}?
{-------------------------------------------------------------------------------?
?Description:?窗体创建时，即创建托盘?
-------------------------------------------------------------------------------}?
procedure?TForm1.FormCreate(Sender:?TObject);?
begin?
??with?NotifyIcon?do?
??begin?
????cbSize?:=?SizeOf(TNotifyIconData);?
????Wnd?:=?Self.Handle;?
????uID?:=?1;?
????uFlags?:=?NIF_ICON?+?NIF_MESSAGE?+?NIF_TIP;???//图标、消息、提示信息?
????uCallbackMessage?:=?WM_TRAYMSG;?
????hIcon?:=?Application.Icon.Handle;?
????szTip?:=?‘托盘测试‘;?
??end;?
??Shell_NotifyIcon(NIM_ADD,@NotifyIcon);?
end;?
{-------------------------------------------------------------------------------?
?Description:?窗体销毁时，卸载托盘?
-------------------------------------------------------------------------------}?
procedure?TForm1.FormDestroy(Sender:?TObject);?
begin?
??Shell_NotifyIcon(NIM_DELETE,@NotifyIcon);?
end;?
{-------------------------------------------------------------------------------?
?Description:?截获窗体最小化消息，最小化到托盘?
-------------------------------------------------------------------------------}?
procedure?TForm1.WMSysCommand(var?Msg:?TMessage);?
begin?
??if?Msg.WParam?=?SC_ICON?then?
????Self.Visible?:=?False?
??else?
????DefWindowProc(Self.Handle,Msg.Msg,Msg.WParam,Msg.LParam);?
end;?
{-------------------------------------------------------------------------------?
?Description:?自定义的托盘消息?
-------------------------------------------------------------------------------}?
procedure?TForm1.WMTrayMsg(var?Msg:?TMessage);?
var?
??p:?TPoint;?
begin?
??case?Msg.LParam?of?
????WM_LBUTTONDOWN:?Self.Visible?:=?True;???//显示窗体?
????WM_RBUTTONDOWN:?
??????begin?
????????SetForegroundWindow(Self.Handle);???//把窗口提前?
????????GetCursorPos(p);?
????????pm1.Popup(p.X,p.Y);?
??????end;?
??end;?????
end;?
{-------------------------------------------------------------------------------?
?Description:?测试菜单项?
-------------------------------------------------------------------------------}?
procedure?TForm1.mniN1Click(Sender:?TObject);?
begin?
??ShowMessage(‘One‘);?
end;?
?
end.? |
4.运行结果如下：
参考MSDN（http://msdn.microsoft.com/en-us/library/bb773352(VS.85).aspx）对NOTIFYICONDATA结构体的介绍却是：
typedef?struct?_NOTIFYICONDATA?{????
????DWORD?cbSize;????????//结构体的大小，以字节为单位????
????HWND?hWnd;???????????//窗口的句柄????
????UINT?uID;????????????//应用程序定义的任务栏图标的标识符????
????UINT?uFlags;?????????//此成员表明具体哪些其他成员为合法数据????
????UINT?uCallbackMessage;???//应用程序定义的消息标示????
????HICON?hIcon;?????????//增加、修改或删除的图标的句柄????
????TCHAR?szTip[64];?????//指向一个以/0结束的字符串的指针????
????DWORD?dwState;???????//Version?5.0，图标的状态????
????DWORD?dwStateMask;???//Version?5.0.?指明dwState成员的那些位可以被设置或者访问????
????TCHAR?szInfo[256];???//指向一个以/0结束的字符串的指针,字符串的内容为气球提示内容????
????union?{????
????????UINT?uTimeout;???//表示气球提示超时的时间，单位为毫秒，此时间后气球提示将消失????
????????UINT?uVersion;???//用来设置使用Windows?95?还是?Windows?2000风格的图标消息接口????
????};????
????TCHAR?szInfoTitle[64];???//指向一个以/0结束的字符串的指针。字符串的内容为气球提示的标题????
????DWORD?dwInfoFlags;???//设置此成员用来给气球提示框增加一个图标,增加的图标出现在气球提示标题的左侧????
????GUID?guidItem;???????//保留????
????HICON?hBalloonIcon;??//用于Windows?Vista或更高版本的自定义气球图标????
}?NOTIFYICONDATA,?*PNOTIFYICONDATA;??? |
那么为了在Windows XP下也有气泡提示，那么我们手动添加几个类型，大概代码如下：
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? |
unit?Unit1;?
?
interface?
?
uses?
??Windows,?Menus;?
//---------------------开始：Delphi?7下添加此声明-------------------------------?
const?
??NIF_INFO????????=?$00000010;??????????//气泡显示标志?
??NIIF_NONE???????=?$00000000;??????????//无图标?
??NIIF_INFO???????=?$00000001;??????????//信息图标?
??NIIF_WARNING????=?$00000002;??????????//警告图标?
??NIIF_ERROR??????=?$00000003;??????????//错误图标?
??NIIF_USER???????=?$00000004;??????????//XP使用hIcon图标?
type?
??TNotifyIconDataEx?=?record?
????cbSize:?DWORD;?
????Wnd:?HWND;?
????uID:?UINT;?
????uFlags:?UINT;?
????uCallbackMessage:?UINT;?
????hIcon:?HICON;?
????szTip:?array?[0..127]?of?AnsiChar;?
????dwState:?DWORD;?
????dwStateMask:?DWORD;?
????szInfo:?array?[0..255]?of?AnsiChar;?
????case?Integer?of?
??????0:?(?
????????uTimeout:?UINT);?
??????1:?(uVersion:?UINT;?
????????szInfoTitle:?array?[0..63]?of?AnsiChar;?
????????dwInfoFlags:?DWORD);??
??end;?
//---------------------开始：Delphi?7下添加此声明-------------------------------?
const?
??WM_TRAYMSG?=?WM_USER?+?101;???????????????????//自定义托盘消息?
type?
??TForm1?=?class(TForm)?
????pm1:?TPopupMenu;?
????mniN1:?TMenuItem;?
????mniwo1:?TMenuItem;?
????procedure?FormCreate(Sender:?TObject);?
????procedure?FormDestroy(Sender:?TObject);?
????procedure?mniN1Click(Sender:?TObject);?
??private?
????procedure?WMTrayMsg(var?Msg:?TMessage);message?WM_TRAYMSG;????//声明托盘消息?
????procedure?WMSysCommand(var?Msg:?TMessage);message?WM_SYSCOMMAND;?
??public?
????{?Public?declarations?}?
??end;?
?
var?
??Form1:?TForm1;?
??NotifyIcon:?TNotifyIconDataEx;????????????????????//定义托盘图标结构体?
implementation?
?
{$R?*.dfm}?
{-------------------------------------------------------------------------------?
?Description:?窗体创建时，即创建托盘?
-------------------------------------------------------------------------------}?
procedure?TForm1.FormCreate(Sender:?TObject);?
begin?
??with?NotifyIcon?do?
??begin?
????cbSize?:=?SizeOf(TNotifyIconDataEx);?
????Wnd?:=?Self.Handle;?
????uID?:=?1;?
????uFlags?:=?NIF_ICON?+?NIF_MESSAGE?+?NIF_TIP?+?NIF_INFO;???//图标、消息、提示信息?
????uCallbackMessage?:=?WM_TRAYMSG;?
????hIcon?:=?Application.Icon.Handle;?
????szTip?:=?‘托盘测试‘;?
????szInfo?:=?‘提示内容‘;?
????szInfoTitle?:=?‘气泡标题‘;?
????dwInfoFlags?:=?NIIF_USER;?
??end;?
??Shell_NotifyIcon(NIM_ADD,@NotifyIcon);?
end;?
{-------------------------------------------------------------------------------?
?……以下代码与上面例子一样?
-------------------------------------------------------------------------------}? |
运行结果如下：
?
更多阅读：
1.http://www.swissdelphicenter.ch/torry/showcode.php?id=1164
2.http://blog.csdn.net/kvs112219/archive/2010/12/11/6069936.aspx
3.http://www.delphibbs.com/delphibbs/dispq.asp?lid=3122188
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