• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 257
  • Last Modified:

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

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
volking
Asked:
volking
  • 6
  • 2
1 Solution
 
ptmcompCommented:
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
 
ptmcompCommented:
And you should use the Graphics object obtained by the PaintEventArgs instead of creating your own.
0
 
ptmcompCommented:
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
Cloud Class® Course: Microsoft Exchange Server

The MCTS: Microsoft Exchange Server 2010 certification validates your skills in supporting the maintenance and administration of the Exchange servers in an enterprise environment. Learn everything you need to know with this course.

 
ptmcompCommented:
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
 
volkingAuthor Commented:
@ ptmcomp - I'll try everything you suggest and let you know.  thanks for the advice.
0
 
ptmcompCommented:
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
 
volkingAuthor Commented:
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
 
ptmcompCommented:
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
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Cloud Class® Course: Ruby Fundamentals

This course will introduce you to Ruby, as well as teach you about classes, methods, variables, data structures, loops, enumerable methods, and finishing touches.

  • 6
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now