Can´t instantiate some .NET objects

Question

I am trying to instantiate the System.Drawing.Graphics object but for some reason Visual Studio can´t find the class. It seems that this is the case for some, but not all classes from the .NET Library.

I already checked the target framework and tried to instantiate with the Namespace. Also, there is no option for resolving it in the Visual Studio menu so it seems like Visual Studio doesnt even know the Object.

Sample code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Drawing;
using System.Windows.Media;


namespace Notify.Classes
{
    class NotificationDrawer
    {
    [DllImport("User32.dll")]
    public static extern IntPtr GetDC(IntPtr hwnd);
    [DllImport("User32.dll")]
    public static extern void ReleaseDC(IntPtr hwnd, IntPtr dc);

    public MainWindow()
    {
        InitializeComponent();
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        IntPtr desktopPtr = GetDC(IntPtr.Zero);
        Graphics g = Graphics.FromHdc(desktopPtr);

        SolidBrush b = new SolidBrush(Color.White);
        g.FillRectangle(b, new Rectangle(0, 0, 1920, 1080));

        g.Dispose();
        ReleaseDC(IntPtr.Zero, desktopPtr);
    }
    }
}

If I had to bet it's this issue: http://stackoverflow.com/q/8553136/1348195 — Benjamin Gruenbaum, May 30 '15 at 16:22
`Graphics` doesn't have a public constructor. It has some factory methods What are you trying to do? — Charles Mager, May 30 '15 at 16:22
@BenjaminGruenbaum No its not, i already checked as i said in the question. — mstorm, May 30 '15 at 16:23
@CharlesMager Doesnt matter, this is just a sample code. It cant find the class, has nothing to do with a missing constructor — mstorm, May 30 '15 at 16:24
@CharlesMager Lol, didnt check that :D Thanks, helped. If you post it as an answer i will accept it ;) — mstorm, May 30 '15 at 16:26
Everything about your code is strange. Your example code wouldn't even compile even if Graphics class was found. And you are trying to access a private constructor of the Graphics class. — Nathan, May 30 '15 at 16:28

Charles Mager · Accepted Answer · 2015-05-30T16:45:23.583

3

Per the documentation, System.Drawing.Graphics is in the System.Drawing assembly.

Ensure you have a reference to System.Drawing.

edited May 30 '15 at 16:45

answered May 30 '15 at 16:28

Charles Mager

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Can´t instantiate some .NET objects

1 Answers1