Solved

Region from a bitmap area

Posted on 2004-09-26
3
265 Views
Last Modified: 2013-11-15
Hi,

I have a bitmap which is made up of three colours (red, green, white and black).  The colours are in big 'splotches' on the bitmap.  What I want to be able to do is, if I click a colour, it returns a region for that colour.  I then need to some how save those regions to recall later on (to see if the same region has been clicked in before).

The regions are semi-circular in shape, never overlap, and are bordered with a black surround.

Thanks for any help.

Stu
0
Comment
Question by:Stuart_Johnson
3 Comments
 
LVL 33

Assisted Solution

by:Slick812
Slick812 earned 25 total points
ID: 12155854
hello Stuart Johnson , , getting a windows Region from a color on a Bitmap is not so easy, you might look a the code in this EE Question, to see an example for that - -


http://www.experts-exchange.com/Programming/Programming_Languages/Delphi/Q_20353055.html

I have trouble understanding when you say -
" I then need to some how save those regions to recall later on"

do you mean save the regions to file storage or what?
0
 
LVL 6

Accepted Solution

by:
pritaeas earned 100 total points
ID: 12158834
If you use Windows' Regions, then it is possible to store these to file. You can use functions to add a lot of points at once to a region.

SetWindowRgn, GetWindowRgn, CreatePolygonRgn, CreatePolyPolygonRgn, CreateRectRgn, CreateRectRgnIndirect, CreateRoundRectRgn, ExtCreateRegion, GetRegionData are functions to use. For more details see the MSDN.

I'll have to search my backups for a project. I know I have one, but am not sure if I can retrieve it. If I do, I'll post it here.
0
 
LVL 6

Author Comment

by:Stuart_Johnson
ID: 12159035
Hi guys,

I actually changed the way the project was to work today, and this question became invalid.  However, I will look into pritaeas' suggestion in case I need it later.

Thanks,

Stuart.
0

Featured Post

Free camera licenses with purchase of My Cloud NAS

Milestone Arcus software is compatible with thousands of industry-leading cameras for added flexibility. Upon installation on your My Cloud NAS, you will receive two (2) camera licenses already enabled in the software. And for a limited time, get additional camera licenses FREE.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction I have seen many questions in this Delphi topic area where queries in threads are needed or suggested. I know bumped into a similar need. This article will address some of the concepts when dealing with a multithreaded delphi database…
Introduction Raise your hands if you were as upset with FireMonkey as I was when I discovered that there was no TListview.  I use TListView in almost all of my applications I've written, and I was not going to compromise by resorting to TStringGrid…
This tutorial will walk an individual through locating and launching the BEUtility application to properly change the service account username and\or password in situation where it may be necessary or where the password has been inadvertently change…
This tutorial will walk an individual through the process of installing of Data Protection Manager on a server running Windows Server 2012 R2, including the prerequisites. Microsoft .Net 3.5 is required. To install this feature, go to Server Manager…

895 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now