Solved

@#$%^&* ... Graphics!

Posted on 2004-10-10
8
241 Views
Last Modified: 2011-10-03
Here's a small sample C# app which demonstrates the problem.
http://www.qpop.com/RokSizPap.zip

This is my first attempt at an OO graphics game using .NET .... This stuff is driving me NUTS!
How do I make a manually drawn image ...

     Persist when overlayed by another window (WITHOUT FLICKER)?
     Resize when needed?
     Scroll within a form if a certain minimum size (800x600) is reached?

I've tried everything I can think of.
    Using: the Form only, a Panel, a Picture box
    Using: Paint event and/or Resize event

BTW ...
I'm working on building an computerized version of this game for eventual on-line playing
http://www.qpop.com/RSP.zip

It's taken a LOT of help from the EE-Math & Science guys to get this far!

P.S. This is not "THE" Qpop project discussed in the lounge. This is just me ... relaxing and playing.
0
Comment
Question by:volking
  • 6
  • 2
8 Comments
 
LVL 10

Expert Comment

by:ptmcomp
Comment Utility
The problem is that you set the control styles on the form but you draw on the panel. If you set the control styles on the panel it should be already much better.
0
 
LVL 10

Expert Comment

by:ptmcomp
Comment Utility
And you should use the Graphics object obtained by the PaintEventArgs instead of creating your own.
0
 
LVL 10

Expert Comment

by:ptmcomp
Comment Utility
You should not change the size of the panel inside the Paint event. This causes serious problems. You can override the OnResize method to resize the control.
0
 
LVL 10

Expert Comment

by:ptmcomp
Comment Utility
Then try to seperate the calculations that are based on the resizing from the paint algorithm. Cache the calculations for the next paint event. And don't paint inside a constructor.
0
Better Security Awareness With Threat Intelligence

See how one of the leading financial services organizations uses Recorded Future as part of a holistic threat intelligence program to promote security awareness and proactively and efficiently identify threats.

 
LVL 5

Author Comment

by:volking
Comment Utility
@ ptmcomp - I'll try everything you suggest and let you know.  thanks for the advice.
0
 
LVL 10

Accepted Solution

by:
ptmcomp earned 500 total points
Comment Utility
To change the control styles of the panel you will need to derrive your own class from Panel and use it instead of the standard panel class. If you want to avoid this then remove the panel and paint directly on the Form.
0
 
LVL 5

Author Comment

by:volking
Comment Utility
I did derive my own class from panel (as you advised) and I followed all the rest of your advice and .... SHAZAAAAM!

Worked like a beautiful thing ...

Many Thanks!
0
 
LVL 10

Expert Comment

by:ptmcomp
Comment Utility
BTW: You can optimize more when your checking the e.ClipRectangle of the PaintEventArgs. If the object you are going to paint is completely outside of this Rectangle, it will not be drawn anyway and you can skip painting it. E.g. when part of your control was covered by a window and gets visible again, only that part is redrawn.
0

Featured Post

Do You Know the 4 Main Threat Actor Types?

Do you know the main threat actor types? Most attackers fall into one of four categories, each with their own favored tactics, techniques, and procedures.

Join & Write a Comment

In order to hide the "ugly" records selectors (triangles) in the rowheaders, here are some suggestions. Microsoft doesn't have a direct method/property to do it. You can only hide the rowheader column. First solution, the easy way The first sol…
Article by: Najam
Having new technologies does not mean they will completely replace old components.  Recently I had to create WCF that will be called by VB6 component.  Here I will describe what steps one should follow while doing so, please feel free to post any qu…
This video discusses moving either the default database or any database to a new volume.
This video explains how to create simple products associated to Magento configurable product and offers fast way of their generation with Store Manager for Magento tool.

728 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

10 Experts available now in Live!

Get 1:1 Help Now