How to get Integer from Pointer

[neumimnemecky]

Hello,
I have a TBitmap or TPaintBox and I scanline to get pointer to first line...

Code:

ps0 := DWORD(bm1.scanline[0]);

Then I have

Code:

type TRGBColor = Integer;
var pFirstByte:DWord;
MyColor: TRGBColor;

MyColor:= how to make the cast to get the color in integer?

This is just for comparison of colors, the order of bytes is not important here.

[TurboMagic]

1. I'm not sure why you're posting in English here, when there's an English forum over at en.delphipraxis.net but welcome here anyway.

2. Why don't you declare a pointer to that TRGBType and let that one point to the scanline property? By incremeinting that pointer you can scan 4 bytes forwards then.

Something like this one:

Delphi-Quellcode:

type 
  TRGBColor = Integer;
var 
  pFirstByte:^TRGBColor;
  MyColor: TRGBColor; 
begin
  pFirstByte := DWORD(bm1.scanline[0]); 
  MyColor := pFirstByte^;
  inc(pFirstByte); // point to the next color(s)
  MyColor := pFirstByte^;

[neumimnemecky]

Because I have type like this:

Code:

type Arr =
  // Array[1..9] represents the sampled pixels around and including current position
  Array[1..256] of Array[1..256] of Array[1..9] of TRGBColor;
type PArray = ^Arr;
...
new(pArr);

pArr is container of sampled pixels. By sampled I mean, that I have picked up colors from image and store them there.

[neumimnemecky]

I have found solution.

Code:

new(pArr);
p := pFirstByte;
pArr^[1][1][1]:=PINT(p)^; // Test of the first pixel color

:-D

I have found help in code of David Dirkse.