Shell_NotifyIcon

[TadaTensai]

I made an app a while back, Ill look for it

[TadaTensai]

//Thanks to [url]www.winprog.org[/url]

#include <windows.h>
#define AD_TASKBAR    9001
  //This is a WM type thingy

const char g_szClassName[] = "myWindowClass";

void SystrayOn(HWND hwnd) 
  //Adds the system tray icon. CHANGE THESE PHRASES!
{
  NOTIFYICONDATA Tic;
  char tip[64];
  lstrcpy(tip,"Test");
  Tic.cbSize=sizeof(Tic);
  Tic.hWnd=hwnd;
  Tic.uID=1;
  Tic.uFlags= NIF_ICON | NIF_MESSAGE | NIF_TIP;
  Tic.uCallbackMessage=AD_TASKBAR;
  Tic.hIcon=LoadIcon(NULL,IDI_APPLICATION);
  lstrcpy(Tic.szTip,"Test");
  Shell_NotifyIcon(NIM_ADD,&Tic);
}

//Removes the systray icon
void SystrayOff(HWND hwnd)
{
  NOTIFYICONDATA Tic;
  Tic.cbSize=sizeof(Tic);
  Tic.hWnd=hwnd;
  Tic.uID=1;
  Shell_NotifyIcon(NIM_DELETE,&Tic);
}

LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM 
   wParam, LPARAM lParam)
{
  switch(msg)
  {
    //If the taskbar had an action, switch it
    case AD_TASKBAR:
      switch(lParam)
      {
        case WM_LBUTTONDOWN:
          MessageBox(NULL,"Click","Click",0);
          break;
        //Process other messages here
      }
      break;
    case WM_CREATE:
      //On create, turn on the systray
      SystrayOn(hwnd);
      break;
    case WM_CLOSE:
      //And remove it
      SystrayOff(hwnd);
      DestroyWindow(hwnd);
      break;
    case WM_DESTROY:
      PostQuitMessage(0);
      break;
    default:
      return DefWindowProc(hwnd, msg, wParam, lParam);
  }
  return 0;
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, 
   hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
  WNDCLASSEX wc;
  HWND hwnd;
  MSG Msg;
  wc.cbSize        = sizeof(WNDCLASSEX);
  wc.style         = 0;
  wc.lpfnWndProc   = WndProc;
  wc.cbClsExtra    = 0;
  wc.cbWndExtra    = 0;
  wc.hInstance     = hInstance;
  wc.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
  wc.hCursor       = LoadCursor(NULL, IDC_ARROW);
  wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
  wc.lpszMenuName  = NULL;
  wc.lpszClassName = g_szClassName;
  wc.hIconSm       = LoadIcon(NULL, IDI_APPLICATION);
  if(!RegisterClassEx(&wc))
  {
    MessageBox(NULL, "Window Registration Failed!", "Error!",
      MB_ICONEXCLAMATION | MB_OK);
    return 0;
  }
  hwnd = CreateWindowEx(
    WS_EX_CLIENTEDGE,
    g_szClassName,
    "The title of my window",
    WS_OVERLAPPEDWINDOW,
    CW_USEDEFAULT, CW_USEDEFAULT, 0, 0,
    NULL, NULL, hInstance, NULL);
  if(hwnd == NULL)
  {
    MessageBox(NULL, "Window Creation Failed!", "Error!", 
      MB_ICONEXCLAMATION | MB_OK);
    return 0;
  }
  //NOTICE NO SHOWWINDOW! This makes it so you cant see
  //the window
  UpdateWindow(hwnd);
  while(GetMessage(&Msg, NULL, 0, 0))
  {
    TranslateMessage(&Msg);
    DispatchMessage(&Msg);
  }
  return Msg.wParam;
}

//Thanks again, winprog.org 

There ya go!