[altef_4]

Originally Posted by Logrim

Anyone, can tell me how to establish priority in install?

[Setup]
AppName=MyApp
AppVername=MyApp
DefaultDirName={pf}\MyApp
 
[code]
 
const
  NORMAL_PRIORITY_CLASS           = $00000020;
  IDLE_PRIORITY_CLASS             = $00000040;
  HIGH_PRIORITY_CLASS             = $00000080;
  REALTIME_PRIORITY_CLASS         = $00000100;
  ABOVE_NORMAL_PRIORITY_CLASS     = $00004000;
  BELOW_NORMAL_PRIORITY_CLASS     = $00008000;
 
function SetPriorityClass(hProcess: THandle; dwPriorityClass: DWORD): BOOL;
  external 'SetPriorityClass@kernel32';
 
function GetCurrentProcess: THandle;
  external 'GetCurrentProcess@kernel32';
 
procedure InitializeWizard();
begin
  SetPriorityClass(GetCurrentProcess, IDLE_PRIORITY_CLASS);     //set setup priority
end;

taken from here