关于DELPHI的TPROCESSENTRY32

function KillTask(ExeFileName: string): integer;
const
PROCESS_TERMINATE=$0001;
var
ContinueLoop: BOOL;
FSnapshotHandle: THandle;
FProcessEntry32: TProcessEntry32;
begin
result := 0;
FSnapshotHandle := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
FProcessEntry32.dwSize := Sizeof(FProcessEntry32);
ContinueLoop := Process32First(FSnapshotHandle,FProcessEntry32);
while integer(ContinueLoop) <> 0 do
begin
if ((UpperCase(ExtractFileName(FProcessEntry32.szExeFile))=
UpperCase(ExeFileName))
or (UpperCase(FProcessEntry32.szExeFile) =
UpperCase(ExeFileName))) then
Result := Integer(TerminateProcess(OpenProcess(
PROCESS_TERMINATE, BOOL(0),
FProcessEntry32.th32ProcessID), 0));
ContinueLoop := Process32Next(FSnapshotHandle,FProcessEntry32);
end;
end;

哪位高手帮我解释一下这个程序？谢谢
ContinueLoop

function KillTask(ExeFileName: string): integer; //杀进程函数
const
PROCESS_TERMINATE=$0001;
var
ContinueLoop: BOOL;
FSnapshotHandle: THandle;
FProcessEntry32: TProcessEntry32;
begin
result := 0;
FSnapshotHandle := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
//取得系统快照
FProcessEntry32.dwSize := Sizeof(FProcessEntry32);
//循环例举，如果到达最后，则退出loop
ContinueLoop := Process32First(FSnapshotHandle,FProcessEntry32);
while integer(ContinueLoop) <> 0 do
begin //取得进程名，大写后好作比较
if ((UpperCase(ExtractFileName(FProcessEntry32.szExeFile))=
UpperCase(ExeFileName))
or (UpperCase(FProcessEntry32.szExeFile) =
UpperCase(ExeFileName))) then
Result := Integer(TerminateProcess(OpenProcess(
PROCESS_TERMINATE, BOOL(0),
//调用terminateprocess结束符合的进程项
FProcessEntry32.th32ProcessID), 0));
ContinueLoop := Process32Next(FSnapshotHandle,FProcessEntry32);
end;
end;