WIN32服务程序（二）：卸载服务

卸载服务的过程是这样的，用OpenSCManager打开SCM，使用OpenService打开准备卸载的服务，通过QueryServiceStatus查询该服务的状态是否停止，如果否，则先停止该服务ControlService，最后用DeleteService删除服务。

 #include <windows.h>
 #include <winsvc.h>
 #include <stdio.h>

 void UninstallServices();
 void main()
 {
     UninstallServices();
 }

 void UninstallServices()
 {
     char name[];
     SC_HANDLE scm;
     SC_HANDLE service;
     SERVICE_STATUS status;

     printf("服务名称：");
     scanf("%s",&name);

     if((scm = OpenSCManager(NULL,NULL,SC_MANAGER_CREATE_SERVICE)) == NULL)
     printf("error!\n");

     service = OpenService(scm,name,SERVICE_ALL_ACCESS | DELETE);
     BOOL isSuccess = QueryServiceStatus(service,&status);
     if(status.dwCurrentState != SERVICE_STOPPED)
     {
         isSuccess = ControlService(service,SERVICE_CONTROL_STOP,&status);
         Sleep();
     }
     isSuccess = DeleteService(service);
     if(!isSuccess)
         printf("Uninstall Falid!\n");
     else
         printf("Uninstall Success!\n");

     CloseServiceHandle(service);
     CloseServiceHandle(scm);
 }

通过运行这个程序，输入服务名称，我们可以将上一篇建立的服务程序删掉了