Delphi的托盘编程 。现在很多程序都用这个，比如傲游，迅雷等，主要代码如下：
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ShellAPI, AppEvnts, StdCtrls, Menus;
const WM_NID = WM_User + 1000; //声明一个常量
private
{ Private declarations } // 定义两个函数
procedure SysCommand(var SysMsg: TMessage); message WM_SYSCOMMAND;
procedure WMNID(var msg:TMessage); message WM_NID;
public
end;
var
Form1: TForm1;
NotifyIcon: TNotifyIconData; // 全局变量
implementation
{$R *.dfm}
procedure TForm1.WMNID(var msg:TMessage);
var
mousepos: TPoint;
begin
GetCursorPos(mousepos); //获取鼠标位置
case msg.LParam of
WM_LBUTTONUP: // 在托盘区点击左键后
begin
Form1.Visible := not Form1.Visible; // 显示主窗体与否
Shell_NotifyIcon(NIM_DELETE, @NotifyIcon); // 显示主窗体后删除托盘区的图标
SetWindowPos(Application.Handle, HWND_TOP, 0, 0, 0, 0, SWP_SHOWWINDOW); // 在任务栏显示程序
end;
WM_RBUTTONUP: PopupMenu1.Popup(mousepos.X, mousepos.Y); // 弹出菜单
end;
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
Shell_NotifyIcon(NIM_DELETE, @NotifyIcon); // 删除托盘图标
end;
procedure TForm1.SysCommand(var SysMsg: TMessage);
begin
case SysMsg.WParam of
SC_MINIMIZE: // 当最小化时
begin
SetWindowPos(Application.Handle, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_HIDEWINDOW);
Hide; // 在任务栏隐藏程序
// 在托盘区显示图标
with NotifyIcon do
begin
cbSize := SizeOf(TNotifyIconData);
Wnd := Handle;
uID := 1;
uFlags := NIF_ICON or NIF_MESSAGE or NIF_TIP;
uCallBackMessage := WM_NID;
hIcon := Application.Icon.Handle;
szTip := '托盘程序';
end;
Shell_NotifyIcon(NIM_ADD, @NotifyIcon); // 在托盘区显示图标
end;
else
inherited;
end;
end;
{以下三个函数为托盘右键菜单，可自行添加功能}
procedure TForm1.N1Click(Sender: TObject);
begin
ShowMessage('Delphi托盘小程序！');
end;
procedure TForm1.N2Click(Sender: TObject);
begin
Form1.Visible := true; // 显示窗体
SetWindowPos(Application.Handle, HWND_TOP, 0, 0, 0, 0, SWP_SHOWWINDOW);
Shell_NotifyIcon(NIM_DELETE, @NotifyIcon); // 删除托盘图标
end;
procedure TForm1.N3Click(Sender: TObject);
begin
Shell_NotifyIcon(NIM_DELETE, @NotifyIcon);
Application.Terminate;
end;
end.