作者：手机用户2602887787 | 来源：互联网 | 2024-11-12 12:32
在Delphi7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：1234
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, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ShellAPI, 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：
http://blog.csdn.net/zisongjia/article/details/68067370
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