EXC_BAD_Access with record array

[IndianaJones]

Hi all,
I have a record like that,

Type
  TIColor = record
      red: Byte;
      green: Byte;
      blue: Byte;
  end;

  TBmp = record
      Bmp : TBGRABitmap;
      bwidth : integer;
      bheight : integer;
      a: Float;
      pcolor: array of array of TIColor;
    end;

When i use the following code I got the EXC_BAD_ACCESS error. Can someone figure it out?

        bmpArray[k].pcolor[j,i].red:=newp.red;

Thanks.

[Bart]

Forgot to initialize tha array (using setlength)?

Bart

[IndianaJones]

Thanks Bart for the reply,
I have tried the setlength case, like this setlength(bmpArray,3) but same result.

[Leledumbo]

What is EXC_BAD_ACCESS and the causes. So it looks like the code fragment is not enough. What is the type of bmpArray? array of TBmp? If so, and you have SetLength-ed it, have you SetLength-ed bmpArray[k].pcolor? pcolor is another dynamic array you know...

[ludob]

And what is newp? If newp is a non-initialised pointer then you have the same problem.

[IndianaJones]

@Leledumbo
Exactly, bmparray is array of TBmp and like this,
    bmpArray: array of TBmp;

@ludob
 Here is newp: TBGRAPixel;

In this line, it gives that error.
 bmpArray[k].pcolor[j,i].red:=newp.red;

P.S
     SetLength(bmpArray, 3);
     is used for.

[ludob]

have you SetLength-ed bmpArray[k].pcolor?

You should also have something like this:

Code: [Select]


for k:=low(bmpArray) to high(bmpArray) do
    begin
    SetLength(bmpArray[k].pcolor,4);
    for j:=low(bmpArray[k].pcolor) to high(bmpArray[k].pcolor) do
      SetLength(bmpArray[k].pcolor[j],5);
    end;