type
TRGB = record
b, g, r: byte;
end;
ARGB = array[0..1] of TRGB;
PARGB = ^ARGB;
var
b: TBitMap;
procedure TForm1.FormCreate(sender: TObject);
begin
b := TBitMap.Create;
b.pixelformat := pf24bit;
b.width := Clientwidth;
b.height := Clientheight;
end;
procedure TForm1.Tim1OnTimer(sender: TObject);
var
p: PARGB;
x, y: integer;
begin
for y := 0 to b.height - 1 do
begin
p := b.scanline[y];
for x := 0 to b.width - 1 do
begin
p[x].r := random(256);
p[x].g := random(256);
p[x].b := random(256);
end;
end;
canvas.draw(0, 0, b);
end;
procedure TForm1.FormDestroy(sender: TObject);
begin
b.free;
end;
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