[ Show ]
Support VoyForums
[ Shrink ]
VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 123456[7]8910 ]

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Date Posted: 18:16:29 01/09/02 Wed
Author: Michel
Subject: Re: How to change the palette of a 256 color TBitmapGraphic?
In reply to: Rich Haselbarth 's message, "Re: How to change the palette of a 256 color TBitmapGraphic?" on 11:19:45 01/09/02 Wed

Hi Rich,

Try changing the palette with the PalettePtr property.

For example,

BitmapGraphic.PalettePtr^.palPalEntry[0].peRed := 255;

The Palette property is read-only so the PalettePtr property was added at one point. If it is not available in your version EnDiGrph.TDibGraphic add,

property PalettePtr : PMaxLogPalette read GetPalettePtr;

function TDibGraphic.GetPalettePtr : PMaxLogPalette;
Result := @FPalette;

Best regards,


>> I'm trying to change the palette of a 256 color
>>TBitmapGraphic like this:
>> Pal: array[0..255] of TPaletteEntry;
>> Image: TImage;
>> Image := TImage.Create;
>> Image.Picture.Graphic := TBitmapGraphic.Create;
>> for I := 0 to 255 do
>> begin
>> Pal[i].peFlags:=PC_RESERVED;
>> Pal[i].peRed:=Random(255);
>> Pal[i].peGreen:=Random(255);
>> Pal[i].peBlue:=Random(255);
>> end;
>> if
>>.PaletteHandle, 0, 256, Pal) <> 0 then
>> but the image will not change at all! What is the

[ Next Thread | Previous Thread | Next Message | Previous Message ]

[ Contact Forum Admin ]

Forum timezone: GMT-5
VF Version: 3.00b, ConfDB:
Before posting please read our privacy policy.
VoyForums(tm) is a Free Service from Voyager Info-Systems.
Copyright © 1998-2019 Voyager Info-Systems. All Rights Reserved.