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Date Posted: 06:41:03 03/21/02 Thu
Author: Michel
Subject: Re: TDibGraphic->RGB problems
In reply to: Brian R 's message, "TDibGraphic->RGB problems" on 00:02:40 03/21/02 Thu


Hi Brian,

The notation for multidimensional properties is like this for CBuilder,

MyTRgb = MyDib->RGB[x][y];

I would recommend using the ScanLine property if you want more direct access to pixels. Each scanline is an array of blue, green, red values, byte size.

Best regards,

Michel

>I'm having a quick play with the Eval to see if it
>suits my needs and I'm having some problems with
>TDibGraphic->RGB function. I'm using BCB 5.
>
>I have a TDibGraphic that has loaded an image (which I
>can display in TImageScrollList). When I try:
>MyTRgb = MyDib->RGB(x,y);
>
>I get told "Wrong number of arguments in call of macro
>'RGB'."
>
>When I try:
>MyTRgb = MyDib->RGB[x,y];
>
>I get told "Too few parameters in call to '_fastcall
>TDibGraphic::GetRGB(const int,const int)'"
>
>As far as I can see in the documentation the only
>required parameters are an x and y coordinate. What
>am I doing wrong?
>
>Also I noticed that I can use Bits to get the info I
>want as well. What is the format of the PByteArray if
>the ImageFormat is truecolor? Thanks for your help.
>
>Brian

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