tauchi.net

// **********************************************************************
// 定数
//
#define APP_NAME _T("MCAlert")
#define MUTEX_NAME _T("MCAlertStartupMutex")
#define SERVICE_NAME _T("MCAlert")
#define SERVICE_PREFIX _T("MCA0:")
// **********************************************************************
// WinMain
//
INT WINAPI WinMain(HINSTANCE hInstance,
 HINSTANCE hPrevInstance,
 LPTSTR lpCmdLine,
 INT nCmdShow)
{
 HANDLE hMutex = NULL,
 hService = NULL;
 TCHAR szMessage[256] = _T("");
 BOOL bRet = TRUE;
 hMutex = CreateMutex(NULL, TRUE, MUTEX_NAME);
 if (hMutex) {
 if (ERROR_ALREADY_EXISTS == GetLastError()) {
 CloseHandle(hMutex);
 hMutex = NULL;
 return FALSE;
 }
 } else {
 return FALSE;
 }
 hService = GetServiceHandle(SERVICE_PREFIX, NULL, NULL);
 if (INVALID_HANDLE_VALUE != hService) {
 if (DeregisterService(hService)) {
 MessageBox(NULL, _T("サービスを停止しました"), APP_NAME, MB_ICONINFORMATION | MB_OK);
 } else {
 wsprintf(szMessage, _T("サービス停止エラー(%d)"), GetLastError());
 MessageBox(NULL, szMessage, APP_NAME, MB_ICONERROR | MB_OK);
 bRet = FALSE;
 }
 } else {
 if (NULL == ActivateService(SERVICE_NAME, 0)) {
 wsprintf(szMessage, _T("サービス開始エラー(%d)"), GetLastError());
 MessageBox(NULL, szMessage, APP_NAME, MB_ICONERROR | MB_OK);
 bRet = FALSE;
 }
 }
 ReleaseMutex(hMutex);
 CloseHandle(hMutex);
 hMutex = NULL;
 return bRet;
}