static void DelegatesConcept()
{
DelegatesClass obj = new DelegatesClass();
obj.TestMethod(5);
bool result = obj.del2(10);
Console.WriteLine(obj.del1());
//Changing the reference of the delegates to point to some other method
obj.del1 = () => { return(false); };//Method3
Console.WriteLine(obj.del1());
Console.WriteLine(result);
MyHelper.PrintPointsToRememberMessage();
Console.WriteLine("1. A delegate is a reference to a method.");
Console.WriteLine("2. First we need to declare a delegate reference");
Console.WriteLine("3. Second we can assigned some method to the delegates");
Console.WriteLine("4. Finally we can call the delegates method.");
MyHelper.PrintNoteConcept();
MyHelper.PrintEndMessage();
}
/// <summary>
/// Checks if a given OpenGL function is supported by the current context
/// </summary>
/// <param name="function">The name of the OpenGL function (i.e. glShaderSource)</param>
/// <returns>True if the function is supported, false otherwise</returns>
public static bool SupportsFunction(string function)
{
lock (gl_lock)
{
if (function == null)
{
throw new ArgumentNullException("function");
}
sb.Remove(0, sb.Length);
if (!function.StartsWith("gl"))
{
sb.Append("gl");
}
sb.Append(function);
FieldInfo f = DelegatesClass.GetField(sb.ToString(), BindingFlags.Static | BindingFlags.NonPublic);
if (f == null)
{
return(false);
}
return(f.GetValue(null) != null);
}
}
public DelegatesUser(DelegatesClass ds)
{
this.ds = ds;
//...
}
