Paint event, outside methods

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Inside the Paint event I want to be able to add some sort of methods? that i can evolve them as much as i want elsewhere in code.
I did some tests some time ago, and it implied PaintEventArgs (i think), but i don't remember exactly how i did it. e(MenuTop) or something i did. And on the other side, PaintEventArgs MenuTop () or something. I guessed a lot until i find the solution. That is why I am asking for help now.

void Screen_Paint(object sender, PaintEventArgs e)
     {
         //these methods must be rendered in a separate class(this one)
         MenuTop();
         MenuDown();
         Background();
         Player();
         Enemy();
         Treasure();
      }

Thank you.

What I have tried:

.........................................................................................................................................is just an idea.

Posted 1-Aug-18 15:44pm

_Q12_

Updated 2-Aug-18 12:08pm

v4

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Eric Lynch 1-Aug-18 23:54pm

Its a bit difficult to follow your terminology. By syntax (in your example), the following would be methods (NOT classes): MenuTop, MenuDown, Background, Player, Enemy, and Treasure. Though, by name, they do sound more like classes.

As an example, if you intend them to be classes, elsewhere you would typically instantiate them, something like the following:

private MenuTop menuTop = new MenuTop();

And, then perhaps in your ScreenPaint method, you might do something like the following:

menuTop.Screen_Paint(sender, e);

This would assume, that you had declared a method Screen_Paint, in the MenuTop class.

So, assuming you are clear on the terms, can you please improve your question so that it uses proper terms and matching syntax.

Alternatively, if you are unclear on the distinction between class and method, I suggest you might need to read a bit more about C# syntax and object oriented design in general before you try to tackle this problem. In the unlikely event this is the case, I'd be happy to provide some links to decent reading material.

_Q12_ 2-Aug-18 12:31pm

I don't know why I wrote 'classes', but i was thinking on 'methods'. I was tired. Sorry about it. I was thinking way too high level i suppose. :) I repaired the mistake in the main question.

I did a test now, and i got what i wanted from first try - wow for me. But surely, after I look over _again_ over your answer, I've seen the resolve given from you too "menuTop.Screen_Paint(sender, e);" , so... Again, good job to you. :)

--------Please make a Solution-------------

Here is the _working_ test:
Sprite cat = new Sprite(WindowsFormsApplication2.Properties.Resources.catBlack);
void MenuTop(object sender, PaintEventArgs e)
{
e.Graphics.DrawImage(cat.Image, cat.Rectangle);
}

void Screen_Paint(object sender, PaintEventArgs e)
{
MenuTop(sender, e);
}

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OriginalGriff · Answer 1 · 2018-08-01T19:33:00

To add to what Eric has said you seem to be confused as to how to "do things" in C# - that code is "procedural" rather than event driven.

In C# everything is inside a class - there is no concept of anything "outside classes", not even global variables, much less events. So there is no way to have a "outside classes" paint event - that would actually be the Paint event for the form as a whole, and you don;t create class instances in Paint events anyway (except of "on the fly" cFont and Brush items anyway) - you certainly wouldn't create major screen objects in a Paint event, because that could occur a hundred time a second giving you a hundred MenuTop items, a hundred Players, and so on.

Instead, your form would create a single instance of each, place it on the form, and let it be responsible for drawing itself in it's own Paint event.

This is complicated, and really needs a lot more than we can fit in a little text box - I'd suggest that you go back and read your course notes / recommended book again before you go any further!