神马文学网屏闭NT/2000/XP/2003系统Ctrl+Alt+Del的完美解决方案
来源：百度文库 编辑：神马文学网 时间：2024/04/28 09:05:52
library SASWinHook;
{
SASWinHook
copyrights by Liu Yang LYSoft http://lysoft.7u7.net 2006.1.1
usage: only need to inject this dll to WinLogon.exe
}
uses Windows, Messages;
{$R *.res}
var
FHandle: THandle;
OldAppProc: Pointer;
function HookProc(hHandle: THandle; uMsg: Cardinal;
wParam, lParam: Integer): LRESULT; stdcall;
var K, C: Word; // wndproc
begin
if uMsg = WM_HOTKEY then
begin
K := HIWORD(lParam);
C := LOWORD(lParam);
// press Ctrl + Alt + Del
if (C and VK_CONTROL<>0) and (C and VK_MENU <>0) and ( K = VK_DELETE)
then Exit; // disable Ctrl + Alt + Del
end;
Result := CallWindowProc(OldAppProc, hHandle,
uMsg, wParam, lParam);
end;
procedure EntryPointProc(Reason: Integer);
begin
case reason of
DLL_PROCESS_ATTACH:
begin // hook SAS window wndproc
FHandle := FindWindow(‘SAS window class‘, ‘SAS window‘);
if not IsWindow(FHandle) then Exit; // is window found?
// save old wndproc
OldAppProc := Pointer(GetWindowLong(FHandle, GWL_WNDPROC));
// set new wndproc
SetWindowLong(FHandle, GWL_WNDPROC, Cardinal(@HookProc));
end;
DLL_PROCESS_DETACH:
begin
if FHandle > 0 then
begin // unhook
if Assigned(OldAppProc) then
SetWindowLong(FHandle, GWL_WNDPROC, LongInt(OldAppProc));
OldAppProc := nil;
end;
end;
end;
end;
begin
OldAppProc := nil;
FHandle := 0;
DllProc := @EntryPointProc;
EntryPointProc(DLL_PROCESS_ATTACH);
end.
{
SASWinHook
copyrights by Liu Yang LYSoft http://lysoft.7u7.net 2006.1.1
usage: only need to inject this dll to WinLogon.exe
}
uses Windows, Messages;
{$R *.res}
var
FHandle: THandle;
OldAppProc: Pointer;
function HookProc(hHandle: THandle; uMsg: Cardinal;
wParam, lParam: Integer): LRESULT; stdcall;
var K, C: Word; // wndproc
begin
if uMsg = WM_HOTKEY then
begin
K := HIWORD(lParam);
C := LOWORD(lParam);
// press Ctrl + Alt + Del
if (C and VK_CONTROL<>0) and (C and VK_MENU <>0) and ( K = VK_DELETE)
then Exit; // disable Ctrl + Alt + Del
end;
Result := CallWindowProc(OldAppProc, hHandle,
uMsg, wParam, lParam);
end;
procedure EntryPointProc(Reason: Integer);
begin
case reason of
DLL_PROCESS_ATTACH:
begin // hook SAS window wndproc
FHandle := FindWindow(‘SAS window class‘, ‘SAS window‘);
if not IsWindow(FHandle) then Exit; // is window found?
// save old wndproc
OldAppProc := Pointer(GetWindowLong(FHandle, GWL_WNDPROC));
// set new wndproc
SetWindowLong(FHandle, GWL_WNDPROC, Cardinal(@HookProc));
end;
DLL_PROCESS_DETACH:
begin
if FHandle > 0 then
begin // unhook
if Assigned(OldAppProc) then
SetWindowLong(FHandle, GWL_WNDPROC, LongInt(OldAppProc));
OldAppProc := nil;
end;
end;
end;
end;
begin
OldAppProc := nil;
FHandle := 0;
DllProc := @EntryPointProc;
EntryPointProc(DLL_PROCESS_ATTACH);
end.
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