{
The LockWorkStation function locks the workstation's display,
protecting it from unauthorized use.
This function has the same result as pressing Ctrl+Alt+Del and
clicking Lock Workstation.
To unlock the workstation, the user must log in.
Windows NT/2000/XP: Included in Windows 2000 and later.
Windows 95/98/Me: Unsupported.
}
procedure TForm1.Button1Click(Sender: TObject);
begin
LockWorkStation;
end;
{ Loading LockWorkStation dynamically}
function LockWS: Boolean;
// by Thomas Stutz, SDC
type
TLockWorkStation = function: Boolean;
var
hUser32: HMODULE;
LockWorkStation: TLockWorkStation;
begin
// Here we import the function from USER32.DLL
hUser32 := GetModuleHandle('USER32.DLL');
if hUser32 <> 0 then
begin
@LockWorkStation := GetProcAddress(hUser32, 'LockWorkStation');
if @LockWorkStation <> nil then
begin
LockWorkStation;
Result := True;
end;
end;
end;
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