Работа с системным треем

if(message == WM_ICON_CB && hwnd == hwnd_myapp && wParam == nid.uID)

#include <windows.h>
 
bool TrayMessage (HWND hDlg, DWORD dwMessage, UINT uID, HICON hIcon, PSTR pszTip) 
 
{ 
   BOOL res; 
 
   NOTIFYICONDATA tnd; 
 
   tnd.cbSize = sizeof(NOTIFYICONDATA); 
   tnd.hWnd = hDlg; 
   tnd.uID = uID; 
 
   tnd.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP; 
   tnd.uCallbackMessage = WM_MOUSEMOVE;
   tnd.hIcon = LoadIcon(0, IDI_WARNING);
 
 
   if (pszTip) 
   { 
       lstrcpyn(tnd.szTip, pszTip, sizeof(tnd.szTip)); 
   } 
   else 
   { 
       tnd.szTip[0] = '\0'; 
   } 
 
   res = Shell_NotifyIcon(dwMessage, &tnd); 
 
   return res; 
}
 
 
LONG WINAPI WndProc(HWND, UINT, WPARAM,LPARAM);
int WINAPI WinMain(HINSTANCE hInstance,
                   HINSTANCE hPrevInstance,
                   LPSTR     lpCmdLine,
                   int       nCmdShow)
{
    HWND hwnd;
    HWND hWnd, hMenu;
    MSG msg;
    LONG x,y;
    WNDCLASS w;
    memset(&w, 0, sizeof(WNDCLASS));
    w.style = CS_HREDRAW | CS_VREDRAW;
    w.lpfnWndProc = WndProc;
    w.hInstance = hInstance;
    w.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
    w.lpszClassName = "My Class";
    RegisterClass(&w);
    hwnd = CreateWindow("My Class", "My title", WS_OVERLAPPEDWINDOW,
        300, 200, 200, 180, NULL, NULL, hInstance, NULL);
    ShowWindow(hwnd,nCmdShow);
    UpdateWindow(hwnd);
    while(GetMessage(&msg,NULL,0,0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return msg.wParam;
}
 
LONG WINAPI WndProc(HWND hWnd, UINT Message, WPARAM wParam, LPARAM lParam)
{
    static HMENU hMainMenu;
 
    HWND hMenu;
    TrayMessage(hWnd, NIM_ADD, 777, 0, "Test tray");
//  ShowWindow (hWnd, SW_HIDE);
    switch (Message){
    case WM_COMMAND:
 
if(LOWORD(wParam) == 1002)
            {
                   MessageBox(hWnd, "Open", "Open", 0);
            }
 
        break;
    }
switch (Message){
    case WM_COMMAND:
if(LOWORD(wParam) == 1004)
            {
                PostQuitMessage(0);
            }
 
        break;
    }
switch (Message){
    case WM_RBUTTONDOWN:
            {
            hMainMenu = CreatePopupMenu();
            AppendMenu( hMainMenu, MF_STRING, 1002, "Open");
            AppendMenu( hMainMenu, MF_STRING, 1003, "About");
            AppendMenu( hMainMenu, MF_SEPARATOR, 0, "");
            AppendMenu( hMainMenu, MF_STRING, 1004, "Exit");
            SetForegroundWindow(hWnd);
            TrackPopupMenuEx(hMainMenu,TPM_HORIZONTAL|TPM_LEFTALIGN,777,777,hWnd,NULL);
            }
        break;
}
 
   switch (Message){
    case WM_DESTROY:    
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd, Message, wParam, lParam);
    }
    return 0;
}