PShareMem = ^TShareMem;
  TShareMem = Record
    id:string[10];
    name:string[20];
    age:Integer;
  end;

    shareMemName:string; //共享内存名
    fileHandle : THandle;//内存映射文件句柄
    pUserInfoShareMem : PShareMem;//指向共享内存的指针

begin
   //创建“内存映射文件”
   fileHandle:=CreateFileMapping($FFFFFFFF, nil, PAGE_READWRITE, 0, SizeOf(TShareMem), PChar(shareMemName));
   if fileHandle <> 0 then
   begin
     Self.Memo1.Lines.Add('已成功创建内存映射文件！');
   end;
end;

  //将“内存映射文件”与“应用程序地址空间”建立映射关系
  pUserInfoShareMem:=MapViewOfFile(fileHandle,FILE_MAP_ALL_ACCESS,0,0,sizeof(TShareMem));
  if pUserInfoShareMem <> nil then
  begin
     Self.Memo1.Lines.Add('已成功建立映射关系！');
  end;

   pUserInfoShareMem.id:='8888';
   pUserInfoShareMem.name:='Terry';
   pUserInfoShareMem.age:=25;
   Self.Memo1.Lines.Add('已向共享内存中写入用户信息！');

  //解除“内存映射文件”与“应用程序地址空间”的映射关系
  if pUserInfoShareMem<> nil then
     UnmapViewOfFile(pUserInfoShareMem);
  Self.Memo1.Lines.Add('已成功解除映射关系！');

  //关闭内存映射文件
  if fileHandle<> 0 then
     CloseHandle(fileHandle);
  Self.Memo1.Lines.Add('已成功关闭内存映射文件！');

 fileHandle:=OpenFileMapping(FILE_MAP_ALL_ACCESS,false,pchar(shareMemName));
  if self.FileHandle <> 0 then
  begin
    Self.Memo1.Lines.Add('已成功打开内存映射文件！')
  end;

   pUserInfoShareMem:= MapViewOfFile(self.FileHandle,windows.FILE_MAP_ALL_ACCESS,0,0,sizeof(TShareMem));
   if pUserInfoShareMem <> nil then
   begin
     Self.Memo1.Lines.Add('已成功建立映射关系！');
   end;
复制代码

   if pUserInfoShareMem <> nil then
   begin
      userInfoStr:='共享内存中获取的用户信息如下:'+#13#10;
      userInfoStr:=userInfoStr+'用户Id号：'+pUserInfoShareMem.id+#13#10;
      userInfoStr:=userInfoStr+'用户姓名：'+pUserInfoShareMem.name+#13#10;
      userInfoStr:=userInfoStr+'用户年龄：'+IntToStr(pUserInfoShareMem.age);
      Self.Memo1.Lines.Add(userInfoStr);
   end; 

  if pUserInfoShareMem<> nil then
     UnmapViewOfFile(pUserInfoShareMem);
  Self.Memo1.Lines.Add('已成功解除映射关系！');

  if fileHandle<> 0 then
     CloseHandle(fileHandle);
  Self.Memo1.Lines.Add('已成功关闭内存映射文件！');