Hello friends,
I inform you that on the web

http://delphimagic.blogspot.com

have a selection of good tricks in Delphi.
I hope you like.

Javier

I remember seeing a VCL on Torry's which was a small layered graphics
editor. I need something like that to include in my application. Does
anybody have any suggestions? Does anybody know of the component I
saw? I think it was freeware.

I just need a way to let users add their text to pictures, with some
possible effects on text.

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Use the following 'smooth bitmap resize'. Gives better results than
stretchdraw.

- Hide quoted text -
- Show quoted text -
Ken White wrote:

Hi all,
I have put a post into the attachements group called "Piece-wise curve
demo (with source code)"

This is a program I coded that shows how you can create one of 3 piece-wise
curve types defined by 3d points in space.

The curve types are:

1. cubic bezier (see the 'TPieceWiseCurve_CubicBezier' and
'TCurve_CubicBezier' classes in 'cubic_bezier.pas')
2. Catmull-Rom (see the 'TPieceWiseCurve_CatmullRom' and
'TCurve_CatmullRom' classes in 'catmull_rom.pas')
3. Hermite (see the 'TPieceWise_Curve_Hermite' and
'TCurve_Hermite' classes in 'hermite.pas')

The piece-wise curve can be closed or open.

Each curve type is desended from the base TPieceWiseCurve and TCurve classes
(see 'piecewise_curves.pas')

How to use:

Step1:

Create the type of piece-wise class you want.

PieceWiseCurve := TPieceWiseCurve_CubicBezier.Create;

Is it really possible to make a TBitmap rotate as quick as an animated GIF
could do, as I will compute the TBitmap.Picture with a turning angle degree
by degree...?

DH

Dear ladies and gentlemen,

I have been checking the GR32.pas library out, recently. And I have some
questions about compiler directives in this library:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
At 850 lines, there is a compiler directive:

{$IFDEF WIN_COLOR_FIX}

What does it mean?

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I know what the {$IFDEF ...} stands for, but I don't know what the
WIN_COLOR_FIX
flag above mean. I can't find detailed explanations about the directives
above in the Delphi Help. Where can I find detailed information about it and
more other compiler directives of Delphi?

Help me, please. Thank you very much.

Best regards.

Xiaoguang

Hello All,

I am looking for a good (read stable & FAST) graphics library that
supports twain. I need to scan a document from any twain enabled device
and convert it into a Microsoft Fax faxable format. And all this on a PC
with less than ideal CPU power.

What I've found so far include:

Dosadi
HiComponents
KDImage
MCM Design
Skyline

We're currently using Gustavo Daud's Delphi Twain together with LibTiff
but we're having difficulties with this solution. It works but it is not
great.

We're a bit resource strapped (developer wise) so I'd like to get a
one-stop-solution.

Any suggestions would be appreciated.

Thank you,
Gerhard

What is the rule ?

I handle the Paint method of a TPaintBox :

procedure TMyBox.Paint;

begin
inherited Paint;

if "a property has changed"
then handle some paintings
end;

"a property has changed" means the if you change Color, an Invalidate will
be performed, like if I just call Invalidate within a method that doesnt
affect any property...

How to make the difference between an Invalidate after a property changed
and an Invalidate after a simple call ?

TPaintBox.Changed/Modified doesn't exist ?

DH

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