c语言编程特训班者最基本实现

1、黑鹰黑鹰 专业的动画安全技术培训多抽出一分钟时间学习.让你的生命更加.今天就是来讲一个与网络有关系的 实例，者的 最基本实现者的 最基本原理就是 从站点上下来东西后 再运行用 C 与windows API 函数 来一起写一个根据这个基本原理，者首先来看下要用到的 两个 API 函数的 定义/ URLDownloadToFileHRESULT URLDownloadToFile( LPUNKNOWaller, LPCSTR szURL,LPCSTR szFileName,DWORD dwLPBINDS,USCALLBACK lpfnCB);Downloads bits from theernet

2、 and saves them to a file. The cnt can choose to benotified of progress through a notification callback.pCallerAddress of the controllingIUnknownerface of the calling ActiveX component (if the calleris an ActiveX component). If the calling application is not an ActiveX component, this valuecan be se

3、t to NULL. Otherwise, the caller is a COM objectt is contained in anothercomponent (such as an ActiveX control withhe context of an HTML page). This parameterrepresents the outermost IUnknown of the calling component. The function attempts thedownload withhe context of the ActiveX cnt framework and

4、allows the callers containerto receive callbacks on the progress of the download. szURLString containing the URL to be downloaded. Cannot be NULL.szFileNameString containing the name of the file to create for bits dwfor future use. Must be zero.lpfnCBt come from the download.Address of the callers I

5、BindSusCallbackerface. URLDownloadToFile calls thiserfaIBindSusCallback:OnProgress method on a connection activity, including thearrival of data. IBindSusCallback:OnDataAvailable is never called. ImplementingIBindSusCallback:OnProgress allows a caller to implement a usererface or otherprogress monit

6、oring functionality. It also allows the download operation to be canceled byreturning E_ABORT from the IBindSusCallback:OnProgress call. Can be NULL./ URLDownloadToFile 不支持断点续传./SExecuteHINSTANHWND hwnd,Execute(LPCTSTR lpOperation, LPCTSTR lpFile, LPCTSTR lpParameters, LPCTSTR lpDirectory,nShowCmd);

7、Opens or prs a specified file.Returns a value greatern 32 if sucsful, or an error valuet is lessn or equalto 32 otherwise. The following table lists the error values. The return value is cast as anHINSTANCE for backward compatibility with 16-bit Windows applications. 0The operatingsystem is out of m

8、emory or resour.ERROR_FILE_NOT_FOUNDThe specified file was not found.ERROR_PATH_NOT_FOUNDThe specified path was not found. ERROR_BAD_FORMATThe .exe file is invalid (non-Win32 .exe or error in .exe image).SE_ERR_ACSDENIEDThe operating system denied acs to the specified file.PLETEThe file name assotio

9、n isplete or invalid.SE_ERR_DDEBUSYThe DDE tranion could not be completed because other DDEtranionswere being prosed.SE_ERR_DDEFAILThe DDE tranion failed.SE_ERR_DDETIMEOUTThe DDE trantimed out.ion could not be completed because the requestSE_ERR_DLLNOTFOUNDThe specified dynamic-link library was not

10、found.SE_ERR_FNFThe specified file was not found.SE_ERR_NOASSOCThere is no application assoted with the given file name exten.SE_ERR_OOMThere was not enough memory to complete the operation. SE_ERR_PNFThe specified path was not found.SE_ERR_SHAREA sharing violation occurred.hwndWindow handle to a pa

11、rent window. This window receives any message boxest an applicationprodu. For exle, an application may report an error by producing a message box.lpOperationAddress of a null-terminated stringt specifies the operation to perform. The followingoperation strings are valid: openThe function opens the f

12、ile specified by the lpFileparameter. The file can be an executable file or afile. It cso be a folder.prThe function prs the file specified by lpFile. The file should be afile. If the file is an executable file, the function opens the file, as if open had beenspecified.exploreThe function explores t

13、he folder specified by lpFile.This parameter can be NULL.hat case, the function opens the file specified by lpFile.lpFileAddress of a null-terminated stringt specifies the file to open or pror the folder toopen or explore. The function can open an executable file or afile. The functioncan prafile.lp

14、ParametersIf the lpFile parameter specifies an executable file, lpParameters is an address to a null-terminated stringt specifies the parameters to be passed to the application.If lpFile specifies alpDirectoryfile, lpParameters should be NULL.Address of a null-terminated stringnShowCmdt specifies th

15、e defauirectory.If lpFile specifies an executable file, nShowCmd specifies how the application is to be shownwhen it is opened. This parameter can be one of the following values: SW_HIDEHides thewindow and activates another window.SW_IZEizes the specified window.SW_MINIMIZEMinimizes the specified wi

16、ndow and activates the next top-level windowzhe-order.SW_RESTOREActivates and displays the window. If the window is minimized orized,Windows restores it to its original size andition. An application should specify thisflag when restoring a minimized window.SW_SHOWActivates the window and displays it

17、 in its current size andition.SW_SHOWDEFAULTtheSTARTUPINFOSets the show se based on the SW_ flag specified instructure passed to theCreatePros function by the programt started the application. Anapplication should callShowWindow with this flag to set the initial show se of its mainwindow.SW_SHOWIZED

18、Activates the window and displays it as aized window.SW_SHOWMINIMIZEDActivates the window and displays it as a minimized window. SW_SHOWMINNOACTIVEDisplays the window as a minimized window. The active windowremainsactive.SW_SHOWNA Displays the window in its current se. The active window remainive.SW

19、_SHOWNOACTIVATEDisplays a window in its most recent size andwindowition. The activeremainive.SW_SHOWNORMALActivates and displays a window. If the window is minimizedized,orWindows restores it to its original size andition. An application should specify thisflag when displaying the window for thetime.If lpFile specifies afile, nShowCmd should be zero.You can use this function to open or explore a sfolder. To open a folder, use either ofthe following calls:SExecute(handle, NULL, path_to_folder, NULL, NULL, SW_SHOWNORMAL);orSExecute(handle, open, path_to_fo