使用pascal(innosetup)获取文件的最新更新时间 [英] Get a files last updated time using pascal (innosetup)

问题描述

在innosetup脚本的卸载部分中，我想添加一项检查，以查看特定文件的上次更新日期时间是否发生在最近的10分钟之内.

In the uninstall portion of an innosetup script, I'd like to add a check to see if a specific file's last update datetime occured within the last 10 mins.

有人知道为此兼容innosetup的pascal代码吗?

Does anyone know the innosetup compatable pascal code for this?

推荐答案

您可以使用Windows API函数GetFileAttributesEx来获取最后的修改日期.将其放在您的[CODE]部分中应该可以正常工作:

You can use the Windows API function GetFileAttributesEx to get the last modification date. Putting this in your [CODE] section should work:

const
    GetFileExInfoStandard = $0;

type 
    FILETIME = record 
      LowDateTime:  DWORD; 
      HighDateTime: DWORD; 
    end; 

    WIN32_FILE_ATTRIBUTE_DATA = record 
      FileAttributes: DWORD; 
      CreationTime:   FILETIME; 
      LastAccessTime: FILETIME; 
      LastWriteTime:  FILETIME; 
      FileSizeHigh:   DWORD; 
      FileSizeLow:    DWORD; 
    end; 

    SYSTEMTIME = record 
      Year:         WORD; 
      Month:        WORD; 
      DayOfWeek:    WORD; 
      Day:          WORD; 
      Hour:         WORD; 
      Minute:       WORD; 
      Second:       WORD; 
      Milliseconds: WORD; 
    end; 

function GetFileAttributesEx (
    FileName:            string;  
    InfoLevelId:         DWORD; 
    var FileInformation: WIN32_FILE_ATTRIBUTE_DATA
    ): Boolean; 
external '[e-mail] stdcall'; 

function FileTimeToSystemTime(
    FileTime:        FILETIME; 
    var SystemTime:  SYSTEMTIME
    ): Boolean; 
external '[e-mail] stdcall'; 

您可以通过如下修改安装程序项目的InitializeWizard函数来对其进行测试:

You can test it by modifying the InitializeWizard function of your installer project like this:

procedure InitializeWizard();
    var 
      FileInformation: WIN32_FILE_ATTRIBUTE_DATA; 
      SystemInfo: SYSTEMTIME;     
begin
    GetFileAttributesEx(
        'c:\ntldr', 
        GetFileExInfoStandard , 
        FileInformation); 

    FileTimeToSystemTime(
        FileInformation.LastWriteTime, 
        SystemInfo); 

    MsgBox(
        format(
            '%4.4d-%2.2d-%2.2d', 
            [SystemInfo.Year, SystemInfo.Month, SystemInfo.Day]),
        mbInformation, MB_OK);
end;

在我的系统(XP SP3)上，消息框显示:2008-08-04

On my system (XP SP3), the messagebox says: 2008-08-04

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