[[duilioisola]]

Prueba con esta solución
https://massuda.blogspot.com.es/2007...o-windows.html

Código Delphi [-]
// Llama a este procedimiento en el OnCreate del formulario principal

procedure DesabilitarGhostingDoWindows;
var
  User32: HMODULE;
  DisableProcessWindowsGhosting: TProcedure;
begin
  User32 := GetModuleHandle('USER32');
  if User32 <> 0 then
  begin
    DisableProcessWindowsGhosting := GetProcAddress(User32, 'DisableProcessWindowsGhosting');
    if Assigned(DisableProcessWindowsGhosting) then
    begin
      DisableProcessWindowsGhosting;
    end;
  end;
end;