軟件試用期及試用次數控制

時(shí)間:2022-07-13 23:42:46 計算機軟件 我要投稿
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軟件試用期及試用次數控制

下面的代碼簡(jiǎn)單演示了各部分的處理過(guò)程:

一、安裝時(shí)寫(xiě)入加密數據:

 (這里的加密使用了控件)

DES->GenerateKey(neowarton20030731);
 TDateTime *d=new TDateTime(Date());
 AnsiString times,date,filename;;
 char dir[256];

 times=0;
 date=DateTimeToStr(*d);

 times=DES->EncryptString(times);
 date=DES->EncryptString(date);
 //install=DES->EncryptString(date);
 AnsiString s=times+date;
 OutputDebugString(s.c_str());


 filename=\mysoft.ini;
 GetSystemDirectory(dir,sizeof(dir));
 filename=dir+filename;

if(FileExists(filename))
 {
 Application->Terminate();  //if the ini file is alread exists exit;
 }
 else
 {
 TIniFile *ini=new TIniFile(filename);
 ini->WriteString(setup,times,times);
 ini->WriteString(setup,date,date);
 ini->WriteString(setup,install,date);

ini;

//write register

TRegistry *reg=new TRegistry();
 reg->RootKey=HKEY_LOCAL_MACHINE;
 if(reg->KeyExists(\SOFTWARE\Microsoft\Windows\CurrentVersion\mysoft))
 Application->Terminate();//if the key exists,terminate
 reg->OpenKey(\SOFTWARE\Microsoft\Windows\CurrentVersion\mysoft,true);
 reg->WriteString(warning,dot modify these items!Otherwise,your system will not run!neowarton2003xian);
 reg->WriteString(times,times);
 reg->WriteString(date,date);
 reg->WriteString(install,date);
 reg->CloseKey();

reg;
 }

二、安裝時(shí)在install Shield中加入以下代碼:

 Lauchapp(SUPPORTDIR^test.exe,)  //test為上面代碼的exe文件
 其它代碼省略

三、在應用程序起動(dòng)時(shí):

bool rt;
 TForm1 *fm1=new TForm1(NULL);//試用版彈出的窗口,點(diǎn)擊試用返回判斷結果
 fm1->ShowModal();
 rt=fm1->try_time;//是否已經(jīng)過(guò)期
  fm1;
 if(rt)
 {
 MessageBox(NULL,¥?3n?é??¥?′á¤v1L?A§A¤£ˉà|A¨?¥??óa(chǎn)?¥??A?Dáê?R¥?|?a??I http://www.xxxxx.com ,ˉ?2t¥D?÷o?μ?¨?¤?àe,MB_OK+MB_ICONINFORMATION);
 Application->Terminate();//??3?à3¥?μ{§?
 return 0;
 }

四、用戶(hù)點(diǎn)擊試用按鈕,返回是否過(guò)期的bool值:

//read the encrypted ini file in the system directory to read the time and date
 //if filenote exist,return false,if the time and date wrong return false;

//read data and then time from the register,where the data is also encrypted

char dir[256];
 AnsiString filename=\mysoft.ini;
 GetSystemDirectory(dir,sizeof(dir));

//the ini fils is in the system directory
 filename=dir+filename;
 if(!FileExists(filename))
 {
 Application->MessageBox(§Aao¨t2?1?¥?3n¥ó?i|?¤F?Dak-×§??A¤w?g¤£ˉà|A¨?¥??I ,ˉ?2t¥D?÷¨?¤?àe,MB_ICONERROR);
 HWND H;
 H=FindWindow(NULL,DNAAlarm);
 ::SendMessage(H,WM_CLOSE,0,0);
 OutputDebugString(go here);
 this->try_time=true;
 Close();
 return;
 }

TIniFile *ini=new TIniFile(filename);
 AnsiString times,datetime,installday;

times=ini->ReadString(setup,times,);
 datetime=ini->ReadString(setup,date,);
 installday=ini->ReadString(setup,install,);
 getthepara();

AnsiString tt=times_reg+|+datetime_reg+|+datetime_reg;
 AnsiString ttt=times+|+datetime+|+installday;

if((times_reg!=times)||(datetime_reg!=datetime)||(installday!=datetime_reg))
 {

this->try_time=true;
 }
 else  //------------------------------------
 {

DES->GenerateKey(neowarton20030731);
 times=DES->DecryptString(times);
 datetime=DES->DecryptString(datetime);
 installday=DES->DecryptString(installday);

times_reg=DES->DecryptString(times_reg);
 datetime_reg=DES->DecryptString(datetime_reg);
 installday_reg= DES->DecryptString(installday_reg);

tt=times_reg+|+datetime_reg+|+datetime_reg;
 ttt=times+|+datetime+|+installday;
 //|r2?|ê?à′?|¨¤é′á
 int t=StrToInt(times);
 TDateTime *dt=new TDate(Date());

TDateTime *s=new TDate(StrToDate(datetime));  TDateTime *install=new TDate(StrToDate(installday));

int tmp=*dt-*s;  
 int tmp2=*dt-*install;
 //int tmp3=*s-*dt;

if((tmp>=-1)&&(tmp<=90)&&(tmp2>=-1)&&(tmp2<=90)&&(t<150))
{
 AnsiString times_tmp=DES->EncryptString(IntToStr(StrToInt(times)+1));
 AnsiString datetime_tmp=DES->EncryptString(DateTimeToStr(*dt));  
 ini->WriteString(setup,times,times_tmp);
 ini->WriteString(setup,date,datetime_tmp);
 putthepara(times_tmp,datetime_tmp);
 this->try_time=false;
 }
 else
 {
 //write wrong time;
 
 AnsiString times_tmp=DES->EncryptString(IntToStr(StrToInt(times)+200));
 AnsiString datetime_tmp=DES->EncryptString(DateTimeToStr(*dt+3000));  
 ini->WriteString(setup,times,times_tmp);
 ini->WriteString(setup,date,datetime_tmp);
 putthepara(times_tmp,datetime_tmp);
 this->try_time=true;
 }
 }

ini;

this->Close();

五、ini文件:

[setup]

times=inAk6xcTevw=
date=XOqvDla+r+2Xtl4ZM567cQ==
install=kAP2X5LVcWaXtl4ZM567cQ==
(數據已經(jīng)加密)
.....

六、注表容INI文件容基本相同!

上面的代碼只是初步的,如果你要使用,需要經(jīng)過(guò)詳細的修改才對。由于是繁體版,部分注釋顯示為亂碼,我已經(jīng)將注釋刪除了,里面的消息框里的字符串也是亂碼,可以改改就行!敬原!

(注,本文只是推薦一種簡(jiǎn)單的方法,以滿(mǎn)足在些朋友簡(jiǎn)單的要求,代碼剛實(shí)現功能 ,存在很多問(wèn)題,我才準備改改,有好的方法可以提出來(lái)。┯蠹姨崾竞玫姆椒。

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