unit Win2k;

interface

uses
  Windows;

const
  WS_EX_LAYERED = $00080000;
  LWA_ALPHA = $00000002;

type
  FAnimateWindow = function(const hwnd: HWND; const dwTime: DWORD; const dwFlags: DWORD):DWORD; stdcall;
  FSetLayeredWindowAttributes = function(hWnd: HWND; crKey: DWORD; bAlpha: Byte; dwFlags: DWORD): BOOL; stdcall;

function AnimateWindow(const hwnd: HWND; const dwTime: DWORD; const dwFlags: DWORD):DWORD;
function SetLayeredWindowAttributes(hwnd: HWND; crKey: DWORD; bAlpha: Byte; dwFlags: DWord): BOOL;

implementation

function AnimateWindow(const hwnd: HWND; const dwTime: DWORD; const dwFlags: DWORD):DWORD;
var
  DLLHandle : THandle;
  AnimateWindow : FAnimateWindow;
begin
  Result := 0;
  DLLHandle := LoadLibrary('user32.dll');
  if DLLHandle <> 0 then begin
    @AnimateWindow := GetProcAddress(DLLHandle,'AnimateWindow');
    if @AnimateWindow <> nil then begin
      Result := AnimateWindow(hwnd,dwTime,dwFlags);
    end;
  end;
end;

function SetLayeredWindowAttributes(hwnd: HWND; crKey: DWORD; bAlpha: Byte; dwFlags: DWORD): BOOL;
var
  DLLHandle : THandle;
  gwlStyle : Longint;
  SetLayeredWindowAttributes : FSetLayeredWindowAttributes;
begin
  Result := false;
  DLLHandle := LoadLibrary('user32.dll');
  if DLLHandle <> 0 then begin
    @SetLayeredWindowAttributes := GetProcAddress(DLLHandle,'SetLayeredWindowAttributes');
    if @SetLayeredWindowAttributes <> nil then begin
      gwlStyle := GetWindowLong(hwnd,GWL_EXSTYLE);
      gwlStyle := gwlStyle or WS_EX_LAYERED;
      SetWindowLong(hwnd,GWL_EXSTYLE,gwlStyle);
      Result := SetLayeredWindowAttributes(hWnd,crKey,bAlpha,dwFlags);
    end;
  end;
end;

end.