通知图标接收到 WM_LBUTTONDBLCLK 但未接收到 WM_CONTEXTMENU

Question

我向基于对话框的应用程序添加了一个通知图标，当双击该图标时，它收到了 WM_LBUTTONDBLCLK，但当右键单击该图标或用键盘突出显示该图标并且上下文菜单键为按下。我根据 Windows 7.1 SDK 示例中的示例使用通知图标。所以，我不知道我哪里出了问题，也不知道为什么这不起作用。

注意：如果我将 WM_CONTEXTMENU 更改为 WM_RBUTTONUP，它会收到事件，但光标坐标错误。

/******************************************************************************/
/* Menu Resource                                                              */
/******************************************************************************/
LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
IDR_TRAYMENU MENU
{
    POPUP ""
    {
        MENUITEM "&Show Status Window", IDM__SHOW_STATUS_WINDOW
        MENUITEM "&About", IDM__ABOUT
        MENUITEM SEPARATOR
        MENUITEM "&Exit", IDM__EXIT
    }
}

/******************************************************************************/
/* WinMain()                                                                  */
/******************************************************************************/
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow )
{

    // ... code unrelated to icon

    // Enable Visual Styles
    InitCommonControls();

    // create the main dialog
    if( NULL == (hWnd=CreateDialog(hInstance,MAKEINTRESOURCE(IDD_MAINDLG),NULL,(DLGPROC)WndProc)) )
    {
        MessageBox( NULL, "Error creating the main dialog!", NULL, MB_OK | MB_ICONERROR );
        return -1;
    }

    // ... code unrelated to icon

    MSG msg;
    while( GetMessage(&msg,NULL,0,0) && IsWindow(hWnd) )
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return 0; 

}    
/******************************************************************************/
/* WndProc()                                                                  */
/******************************************************************************/
BOOL CALLBACK WndProc(HWND hWndDlg, UINT Message, WPARAM wParam, LPARAM lParam)
{

    switch(Message)
    {
        case WM_INITDIALOG:
        {

            // ... code unrelated to icon
            hIcon = (HICON)LoadImage( GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_DDCMP), IMAGE_ICON, 16, 16, LR_DEFAULTSIZE );

            // Setup the system tray icon
            memset( &nid, 0, sizeof(NOTIFYICONDATA) );
            nid.cbSize = sizeof(NOTIFYICONDATA);
            nid.hWnd = hWndDlg;
            nid.uID = 0xDDC;
            nid.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP | NIF_SHOWTIP;
            nid.uCallbackMessage = WM_APP + 0xDDC;
            nid.hIcon = hIcon;
            strcpy( nid.szTip, "DDCMP Driver" );
            Shell_NotifyIcon( NIM_ADD, &nid );

            // ... code unrelated to icon

            return true;
        } break;

        case WM_APP + 0xDDC:
        {
            switch( LOWORD(lParam) )
            {
                case WM_CONTEXTMENU:
                {
                    MessageBox( hWndDlg, "This message box never shows up.", NULL, MB_OK | MB_SYSTEMMODAL );
                    HMENU hMenu = LoadMenu(GetModuleHandle(NULL),MAKEINTRESOURCE(IDR_TRAYMENU));
                    if( hMenu )
                    {
                        HMENU hSubMenu = GetSubMenu(hMenu,0);
                        if( hSubMenu )
                        {
                            SetForegroundWindow( hWndDlg );
                            POINT pt = { LOWORD(wParam), HIWORD(wParam) };
                            UINT uFlags = TPM_RIGHTBUTTON;
                            if( 0 != GetSystemMetrics(SM_MENUDROPALIGNMENT) )
                                uFlags |= TPM_RIGHTALIGN;
                            else
                                uFlags |= TPM_LEFTALIGN;
                            TrackPopupMenuEx( hSubMenu, uFlags, pt.x, pt.y, hWndDlg, NULL );

                        }
                        DestroyMenu( hMenu );
                    }
                } break;
                case WM_LBUTTONDBLCLK:
                    if( IsWindowVisible(hWndDlg) )
                        ShowWindow( hWnd, SW_HIDE );
                    else
                        ShowWindow( hWnd, SW_SHOW );
                    break;
            }
            return true;
        } break;

        case WM_CLOSE:
            ShowWindow( hWndDlg, SW_HIDE );
            break;

        case WM_DESTROY:
        case WM_QUIT:
        {
            Shell_NotifyIcon( NIM_DELETE, &nid );

            // ... code unrelated to icon

            return true;
        } break;
    }

    return false;
}

这是 Windows 7.1 SDK 示例中的 WndProc

    LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static HWND s_hwndFlyout = NULL;
    static BOOL s_fCanShowFlyout = TRUE;

    switch (message)
    {
    case WM_CREATE:
        // add the notification icon
        if (!AddNotificationIcon(hwnd))
        {
            MessageBox(hwnd,
                L"Please read the ReadMe.txt file for troubleshooting",
                L"Error adding icon", MB_OK);
            return -1;
        }
        break;
    case WM_COMMAND:
        {
            int const wmId = LOWORD(wParam);
            // Parse the menu selections:
            switch (wmId)
            {
            case IDM_LOWINK:
                ShowLowInkBalloon();
                break;

            case IDM_NOINK:
                ShowNoInkBalloon();
                break;

            case IDM_PRINTJOB:
                ShowPrintJobBalloon();
                break;

            case IDM_OPTIONS:
                // placeholder for an options dialog
                MessageBox(hwnd,  L"Display the options dialog here.", L"Options", MB_OK);
                break;

            case IDM_EXIT:
                DestroyWindow(hwnd);
                break;

            case IDM_FLYOUT:
                s_hwndFlyout = ShowFlyout(hwnd);
                break;

            default:
                return DefWindowProc(hwnd, message, wParam, lParam);
            }
        }
        break;

    case WMAPP_NOTIFYCALLBACK:
        switch (LOWORD(lParam))
        {
        case NIN_SELECT:
            // for NOTIFYICON_VERSION_4 clients, NIN_SELECT is prerable to listening to mouse clicks and key presses
            // directly.
            if (IsWindowVisible(s_hwndFlyout))
            {
                HideFlyout(hwnd, s_hwndFlyout);
                s_hwndFlyout = NULL;
                s_fCanShowFlyout = FALSE;
            }
            else if (s_fCanShowFlyout)
            {
                s_hwndFlyout = ShowFlyout(hwnd);
            }
            break;

        case NIN_BALLOONTIMEOUT:
            RestoreTooltip();
            break;

        case NIN_BALLOONUSERCLICK:
            RestoreTooltip();
            // placeholder for the user clicking on the balloon.
            MessageBox(hwnd, L"The user clicked on the balloon.", L"User click", MB_OK);
            break;


        // 
        //
        // As you can very plainly see, the Windows SDK Sample ONLY used WM_CONTEXTMNEU
        // 
        //

        case WM_CONTEXTMENU:
            {
                POINT const pt = { LOWORD(wParam), HIWORD(wParam) };
                ShowContextMenu(hwnd, pt);
            }
            break;
        }
        break;

    case WMAPP_HIDEFLYOUT:
        HideFlyout(hwnd, s_hwndFlyout);
        s_hwndFlyout = NULL;
        s_fCanShowFlyout = FALSE;
        break;

    case WM_TIMER:
        if (wParam == HIDEFLYOUT_TIMER_ID)
        {
            // please see the comment in HideFlyout() for an explanation of this code.
            KillTimer(hwnd, HIDEFLYOUT_TIMER_ID);
            s_fCanShowFlyout = TRUE;
        }
        break;
    case WM_DESTROY:
        DeleteNotificationIcon();
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hwnd, message, wParam, lParam);
    }
    return 0;
}

Answer 1

我认为您应该尝试将uVersion结构的成员更改NOTIFYICONDATA为NOTIFYICON_VERSION_4，文档指出该成员值将告诉uCallbackMessage参数在传递给回调函数时将如何解释。

您还可以看看这个：Basic use of Shell_NotifyIcon in Win32

我做了一些研究，以下内容应该对您有用：

memset(&nid, 0, sizeof(NOTIFYICONDATA));
nid.cbSize = sizeof(NOTIFYICONDATA);
nid.hWnd = hWndDlg;
nid.uID = 0xDDC;
nid.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP | NIF_SHOWTIP;
nid.uCallbackMessage = WM_APP + 0xDDC;
nid.hIcon = hIcon;
nid.uVersion = NOTIFYICON_VERSION_4;
strcpy(nid.szTip, "DDCMP Driver");
Shell_NotifyIcon(NIM_ADD, &nid);
Shell_NotifyIcon(NIM_SETVERSION, &nid);

NIM_SETVERSION（MSDN）：

仅限 Shell32.dll 版本 5.0 及更高版本。指示通知区域根据 lpdata 指向的结构的 uVersion 成员中指定的版本号进行操作。版本号指定哪些成员被识别。