修改Win32 Service配置信息（包括SCM描述信息）

Changing a Service's ConfigurationA service configuration program uses the ChangeServiceConfig and ChangeServiceConfig2 functions to change the configuration parameters of an installed service. The program opens a handle to the service object, modifies its configuration, and then closes the service object handle.In the following example, the DoDisableSvc function uses ChangeServiceConfig to change the service start type to "Disabled", the DoEnableSvc function uses ChangeServiceConfig to change the service start type to "Enabled", and the DoUpdateSvcDesc function uses ChangeServiceConfig2 to set the service description to "This is a test description". The szSvcName variable is a global variable that contains the name of the service. For the complete example that sets this variable, see SvcConfig.cpp.#include <windows.h>#include <stdio.h>TCHAR szSvcName[80];//// Purpose: // Disables the service.//// Parameters:// None// // Return value:// None//VOID DoDisableSvc(){ SC_HANDLE schSCManager; SC_HANDLE schService; // Get a handle to the SCM database. schSCManager = OpenSCManager( NULL, // local computer NULL, // ServicesActive database SC_MANAGER_ALL_ACCESS); // full access rights if (NULL == schSCManager) { printf("OpenSCManager failed (%d)/n", GetLastError()); return; } // Get a handle to the service. schService = OpenService( schSCManager, // SCM database szSvcName, // name of service SERVICE_CHANGE_CONFIG); // need change config access if (schService == NULL) { printf("OpenService failed (%d)/n", GetLastError()); CloseServiceHandle(schSCManager); return; } // Change the service start type. if (! ChangeServiceConfig( schService, // handle of service SERVICE_NO_CHANGE, // service type: no change SERVICE_DISABLED, // service start type SERVICE_NO_CHANGE, // error control: no change NULL, // binary path: no change NULL, // load order group: no change NULL, // tag ID: no change NULL, // dependencies: no change NULL, // account name: no change NULL, // password: no change NULL) ) // display name: no change { printf("ChangeServiceConfig failed (%d)/n", GetLastError()); } else printf("Service disabled successfully./n"); CloseServiceHandle(schService); CloseServiceHandle(schSCManager);}//// Purpose: // Enables the service.//// Parameters:// None// // Return value:// None//VOID DoEnableSvc(){ SC_HANDLE schSCManager; SC_HANDLE schService; // Get a handle to the SCM database. schSCManager = OpenSCManager( NULL, // local computer NULL, // ServicesActive database SC_MANAGER_ALL_ACCESS); // full access rights if (NULL == schSCManager) { printf("OpenSCManager failed (%d)/n", GetLastError()); return; } // Get a handle to the service. schService = OpenService( schSCManager, // SCM database szSvcName, // name of service SERVICE_CHANGE_CONFIG); // need change config access if (schService == NULL) { printf("OpenService failed (%d)/n", GetLastError()); CloseServiceHandle(schSCManager); return; } // Change the service start type. if (! ChangeServiceConfig( schService, // handle of service SERVICE_NO_CHANGE, // service type: no change SERVICE_DEMAND_START, // service start type SERVICE_NO_CHANGE, // error control: no change NULL, // binary path: no change NULL, // load order group: no change NULL, // tag ID: no change NULL, // dependencies: no change NULL, // account name: no change NULL, // password: no change NULL) ) // display name: no change { printf("ChangeServiceConfig failed (%d)/n", GetLastError()); } else printf("Service enabled successfully./n"); CloseServiceHandle(schService); CloseServiceHandle(schSCManager);}//// Purpose: // Updates the service description to "This is a test description".//// Parameters:// None// // Return value:// None//VOID DoUpdateSvcDesc(){ SC_HANDLE schSCManager; SC_HANDLE schService; SERVICE_DESCRIPTION sd; LPTSTR szDesc = TEXT("This is a test description"); // Get a handle to the SCM database. schSCManager = OpenSCManager( NULL, // local computer NULL, // ServicesActive database SC_MANAGER_ALL_ACCESS); // full access rights if (NULL == schSCManager) { printf("OpenSCManager failed (%d)/n", GetLastError()); return; } // Get a handle to the service. schService = OpenService( schSCManager, // SCM database szSvcName, // name of service SERVICE_CHANGE_CONFIG); // need change config access if (schService == NULL) { printf("OpenService failed (%d)/n", GetLastError()); CloseServiceHandle(schSCManager); return; } // Change the service description. sd.lpDescription = szDesc; if( !ChangeServiceConfig2( schService, // handle to service SERVICE_CONFIG_DESCRIPTION, // change: description &sd) ) // new description { printf("ChangeServiceConfig2 failed/n"); } else printf("Service description updated successfully./n"); CloseServiceHandle(schService); CloseServiceHandle(schSCManager);}