Danke nochmal, ich habe es in eine Function gegossen:
Delphi-Quellcode:
type
TRGB =
record
b, g, r: Byte;
end;
ARGB =
array [0 .. 1]
of TRGB;
PARGB = ^ARGB;
function RandomBitmap(bmp:
VCL.Graphics.TBitmap; iWidth: Integer = 225; iHeight: Integer = 225): Boolean;
var
ix, iy: Integer;
p: PARGB;
begin
Result :=
default (Boolean);
if (iWidth = 0)
and (iHeight = 0)
then
exit;
Randomize;
try
bmp.PixelFormat := pf24bit;
bmp.Width := iWidth;
bmp.Height := iHeight;
for iy := 0
to (bmp.Height - 1)
do
begin
p := bmp.ScanLine[iy];
for ix := 0
to (bmp.Width - 1)
do
begin
p[ix].r := random(High(Byte));
p[ix].g := random(High(Byte));
p[ix].b := random(High(Byte));
end;
end;
finally
Result := true;
end;
end;
// Aufruf z.B.:
var
Dummy_Image:
Vcl.Graphics.TBitmap;
begin
Dummy_Image :=
Vcl.Graphics.TBitmap.Create;
RandomBitmap(Dummy_Image, random(50) + 225, random(50) + 225);
// hier was mit dem Bild machen
Dummy_Image.Free;
end;
LG und schlaf gut