delphi 调试时总出现cpu窗口，ntdll.dll点的解决方法

 在主界面的implementation  {$R *.dfm} 下放入以下代码：
procedure PatchInt3;
var
NOP: Byte;
NTDLL: THandle;
BytesWritten: DWORD;
Address: Pointer;
begin
 if Win32Platform <> VER_PLATFORM_WIN32_NT then
Exit;
 NTDLL := GetModuleHandle('NTDLL.DLL');
 if NTDLL = 0 then
Exit;
Address := GetProcAddress(NTDLL, 'DbgBreakPoint');
if Address = nil then
 Exit;
try
if Char(Address^) <> #$CC then
 Exit;
NOP := $90;
if WriteProcessMemory(GetCurrentProcess, Address, @NOP, 1, BytesWritten) and (BytesWritten = 1) then FlushInstructionCache(GetCurrentProcess, Address, 1);
except // Do not panic if you see an EAccessViolation here, it is perfectly harmless!
on EAccessViolation do ;
else
raise;
end;
end;
然后在窗体的Create中调用 PatchInt3 ；或者在窗体代码的最后一个end.前加入一下代码即可以解决
//-------------------------------------------------------------- i
nitialization
begin
PatchInt3; //防止关闭窗口时出现CPU: ntdll.DbgBreakPoint
end;