C#•14mo ago

✅ PaintEventArgs and Graphics

I have the answers to a question yet i dont get how they can write gr = pea.Graphics; when i try it i cant and i think its cuz gr is not declared, am i wrong or are the answers wrong? the first snippet is the starting code and at the place of the comment is the longer code (that youd need to write urself)

31 Replies

TsjechOP•14mo ago

(for context this program should create a red dot on the cursor and make a blue box the height of the cursor that fades to aqua, the amount of times clicked are the amount of shades of blue in the box

Pobiega•14mo ago

Please don't share your code as screenshots, use $code instead

MODiX•14mo ago

Posting Code Snippets To post a code snippet type the following: ```cs // code here ``` Notes: - Get an example by typing $codegif in the chat. - Change the language by replacing cs with the language of your choice (for example sql or cpp). - If your code is too long, you can post it to https://paste.mod.gg/ and share the link.

Pobiega•14mo ago

gr is just a variable, and we can't see the declaration of it on the right side but I'd be very concerned about keeping a reference to a graphics object retrieved from an event args outside the event handler for said event

TsjechOP•14mo ago

this is from textbook its an image lmao

Pobiega•14mo ago

well where is your code

TsjechOP•14mo ago

mine?

Pobiega•14mo ago

when i try it i cant and i think its...

yes

TsjechOP•14mo ago

i know gr isnt declared but its weird the answers dont either, and i dont know how to declare it, cuz Graphics gr = pea.Graphics doesnt work either

Pobiega•14mo ago

I can see this is winforms, but this is a highly unorthodox way of doing things normally you create classes for each of your forms, inheriting from Form, instead of creating a local instance of Form whats the error on void teken?

TsjechOP•14mo ago

doesnt scherm inherit form form?

Pobiega•14mo ago

no, scherm is a variable of type Form

TsjechOP•14mo ago

i added a ; 🤦

TsjechOP•14mo ago

yep that is it SECOND TIME THIS WEEK ty anyways!

Pobiega•14mo ago

I'd highly recommend doing some more practice on variables and variable scopes. These are fundamentals that are the backbone of any code.

TsjechOP•14mo ago

variable scopes?

Pobiega•14mo ago

$scopes

MODiX•14mo ago

scope A {
  thing a;
  scope B {
    thing b;
  }
}

scope A {
  thing a;
  scope B {
    thing b;
  }
}

thing a is available in scope A and scope B thing b is available only in scope B

Pobiega•14mo ago

$structure

MODiX•14mo ago

namespace Namespace;

[Attribute]
public class Class
{
    public string PublicField;
    private bool _privateField;
    protected double protectedField;    

    public int PublicProperty { get; set; }

    public Class() {} // Constructor

    public void Method(int parameter)
    {
        var localVariable = parameter; 
    } 
}

namespace Namespace;

[Attribute]
public class Class
{
    public string PublicField;
    private bool _privateField;
    protected double protectedField;    

    public int PublicProperty { get; set; }

    public Class() {} // Constructor

    public void Method(int parameter)
    {
        var localVariable = parameter; 
    } 
}

TsjechOP•14mo ago

oh like that ye i think its cuz the course is imperative programming

Pobiega•14mo ago

mhm

TsjechOP•14mo ago

so we never use 2 things at once if that makes sense its all line by line

Pobiega•14mo ago

no fucking clue why you'd use an OOP GUI framework to practice imperative programming thats... just stupid 🙂

TsjechOP•14mo ago

uni 🙂 ty anyways tho

Pobiega•14mo ago

Yeah I mean that the course design is stupid

TsjechOP•14mo ago

ye exactly we had if statement after like while and paint and shit idrk what they are on

Pobiega•14mo ago

Well, if you feel that the thread is over, feel free to $close it

MODiX•14mo ago

Use the /close command to mark a forum thread as answered

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✅ PaintEventArgs and Graphics