static extern bool DeleteDC(IntPtr hdc);

    DeleteDC(pSource);

static extern bool DeleteDC(IntPtr hdc);

    DeleteDC(pSource);

When you no longer need the information DC, call the DeleteDC function.

[DllImport("gdi32.dll", EntryPoint = "DeleteDC")]

public static extern bool DeleteDC([In] IntPtr hdc);

Private Shared Function DeleteDC(hdc As IntPtr) As <MarshalAs(UnmanagedType.Bool)> Boolean

Public Declare Function DeleteDC Lib "gdi32" _

                if(hDC!=IntPtr.Zero) DeleteDC(hDC);

    static extern bool DeleteDC(IntPtr hdc);

    DeleteDC(hdcScreen);

                DeleteDC(pSource);

        static extern bool DeleteDC(IntPtr hdc);

            Win32.DeleteDC(memDc);

        public extern static Bool DeleteDC(IntPtr hdc);