unit1.cpp

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//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
  TFileTime C_T,A_T,W_T;
  TSystemTime S_T;
  TDateTime D_T;
  int ff;
  if(OpenDialog1->Execute())
  {
    ff=FileOpen(OpenDialog1->FileName, fmOpenWrite);
    if(ff==-1)
    {
      Application->MessageBox("打开文件不正确!","提示",MB_OK);
      return;
    }

    D_T=Now();
    DateTimeToSystemTime(D_T,S_T);
    SystemTimeToFileTime(&S_T,&C_T);
    SystemTimeToFileTime(&S_T,&A_T);
    SystemTimeToFileTime(&S_T,&W_T);

    if(SetFileTime((void*)ff,&C_T,&A_T,&W_T))
      Application->MessageBox("修改日期成功!","提示",MB_OK);
    else
      Application->MessageBox("修改日期错误!","提示",MB_OK);
    FileClose(ff);
  }
}
//---------------------------------------------------------------------------