c++ - shell_notifyicon : an attempt was made to reference a token that does not exist, 没有显示图标

Question

我看到通知气球，但没有显示图标。在成功(返回 TRUE)调用 Shell_NotifyIcon 后出现 Windows 错误:尝试引用不存在的 token 。主要问题是为什么我看不到图标？使用最新更新的 Windows 7。

这是一个代码片段:

namespace tray_tip
{
#define FINAL_INIT( tip, title, ic, icon_id, inst )\
    if ( icon )\
    {\
        static const GUID myGUID = \
        {0x23977b55, 0x10e0, 0x4041, {0xb8, 0x62, 0xb1, 0x95, 0x41, 0x96, 0x36, 0x69}};\
        data.guidItem = myGUID;\
        data.dwInfoFlags |= NIF_ICON;\
        ExtractIconEx( _T("task_dialog_test.ico"), 0, NULL, &(data.hIcon), 1 );\
    }\
    data.dwInfoFlags |= ic;\
    _tcscpy_s( data.szInfo, tip );\
    _tcscpy_s( data.szInfoTitle, title );

    static NOTIFYICONDATA data = {0};
    inline void init( HWND const & parent, UINT const & msg_id, UINT const & time_out = 30 )
    {
        ULONGLONG ullVersion = GetDllVersion( _T( "Shell32.dll" ) );
        if ( ullVersion > MAKEDLLVERULL ( 6,0,0,0 ) )
            data.cbSize = sizeof ( NOTIFYICONDATA );
        else if ( ullVersion == MAKEDLLVERULL( 6,0,0,0 ) )
            data.cbSize = sizeof( NOTIFYICONDATA_V3_SIZE );
        else if ( ullVersion >= MAKEDLLVERULL( 5,0,0,0 ) )
            data.cbSize = NOTIFYICONDATA_V2_SIZE;
        else 
            data.cbSize = NOTIFYICONDATA_V1_SIZE;
        data.hWnd = parent;
        data.uFlags = NIF_INFO | NIF_MESSAGE;// | NIF_SHOWTIP;
        data.uCallbackMessage = msg_id;
        data.uTimeout = time_out;
    }
    inline BOOL show( BOOL show = FALSE, TCHAR tip[256] = _T(""), TCHAR title[64] = _T(""), DWORD const & ic = NIIF_INFO, UINT const & icon = 0, HINSTANCE const & inst_h = NULL )
    {
        FINAL_INIT( tip, title, ic, icon, inst_h );
        return Shell_NotifyIcon( show == TRUE ? NIM_ADD : NIM_DELETE, &data ); // function checks if version can be changed if it was preset.
    }
}

Answer 1

好的，这是我的解决方案建议。对于 Windows 7，有一种识别图标的特定方法。可以通过两种方式识别通知区域中的每个图标。在注册表中声明图标的 GUID。这是 Windows 7 及更高版本上的首选方法。与通知区域图标关联的窗口句柄，加上应用程序定义的图标标识符。此方法用于 Windows Vista 和更早版本。因此，当指定 data.uID 时，Windows 7 不应从父句柄和 uID 字段值中生成唯一 ID，而应从指定的 GUID(全局唯一标识符)中生成。因此，当使用 uID 向通知区域图标发送任何消息时，ShellNotify_Icon 将返回零(错误 ID)。但是在创建GUID的时候，比如使用VS2010工具自带的GuidGen工具，需要机器网卡地址和ID，机器配置，当前日期和时间，随机组件，Windows 7都会有一个唯一的ID来对待。您可以从我对 Hans Passant 消息的评论中提到的链接在 MSDN 中获得更多信息。

这是一个有效的代码片段:

namespace tray_tip
{

#define FINAL_INIT( tip, title, ic, icon_id, inst_h )\
    data.uFlags |= NIF_ICON;\
    LoadIconMetric(inst_h, MAKEINTRESOURCE(icon_id), LIM_SMALL, &(data.hIcon));\
    static const GUID ic_guid = { 0xa351efe, 0x9642, 0x4acc, { 0xb3, 0x25, 0xec, 0x1a, 0x49, 0x91, 0x75, 0xaf } };\
    data.uFlags |= NIF_GUID;\
    data.guidItem = ic_guid;\
    data.dwStateMask = NIS_HIDDEN;\
    data.dwInfoFlags |= ic;\
    _tcscpy_s( data.szInfo, tip );\
    _tcscpy_s( data.szInfoTitle, title );

//#define FINAL_INIT( tip, title, ic, icon_id, inst_h )\
//  data.uFlags |= NIF_ICON;\
//  LoadIconMetric(inst_h, MAKEINTRESOURCE(icon_id), LIM_SMALL, &(data.hIcon));\
//  data.uID = icon_id,\
//  data.dwStateMask = NIS_HIDDEN;\
//  data.dwInfoFlags |= ic;\
//  _tcscpy_s( data.szInfo, tip );\
//  _tcscpy_s( data.szInfoTitle, title );
    static NOTIFYICONDATA data = {0};
    inline void init( HWND const & parent, UINT const & msg_id, UINT const & time_out = 30 )
    {
        ULONGLONG ullVersion = GetDllVersion( _T( "Shell32.dll" ) );
        if ( ullVersion > MAKEDLLVERULL ( 6,0,0,0 ) )
            data.cbSize = sizeof ( NOTIFYICONDATA );
        else if ( ullVersion == MAKEDLLVERULL( 6,0,0,0 ) )
            data.cbSize = sizeof( NOTIFYICONDATA_V3_SIZE );
        else if ( ullVersion >= MAKEDLLVERULL( 5,0,0,0 ) )
            data.cbSize = NOTIFYICONDATA_V2_SIZE;
        else 
            data.cbSize = NOTIFYICONDATA_V1_SIZE;
        data.hWnd = parent;
        data.uFlags = NIF_INFO | NIF_MESSAGE;
        data.uCallbackMessage = msg_id;
        data.uTimeout = time_out;
    }
    inline BOOL show( BOOL show = FALSE, TCHAR tip[256] = _T(""), TCHAR title[64] = _T(""), DWORD const & ic = NIIF_INFO, UINT const & icon_id = 0, HINSTANCE const & inst_h = NULL )
    {
        FINAL_INIT( tip, title, ic, icon_id, inst_h );
        data.dwState = show ? 0 : 1;
        static bool added = false;
        if ( added || ( !added && show ) )
        {
            added = true;
            return  Shell_NotifyIcon( show == TRUE ? NIM_ADD : NIM_DELETE, &data ); // function checks if version can be changed if it was preset.
        }
        else 
            return 0;
    }

} // namespace tray_tip