CallingConventions Enum
Definition
Important
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Defines the valid calling conventions for a method.
This enumeration supports a bitwise combination of its member values.
public enum class CallingConventions
[System.Flags]
public enum CallingConventions
[System.Flags]
[System.Serializable]
public enum CallingConventions
[System.Flags]
[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public enum CallingConventions
[<System.Flags>]
type CallingConventions =
[<System.Flags>]
[<System.Serializable>]
type CallingConventions =
[<System.Flags>]
[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type CallingConventions =
Public Enum CallingConventions
- Inheritance
- Attributes
Fields
Any | 3 | Specifies that either the |
ExplicitThis | 64 | Specifies that the signature is a function-pointer signature, representing a call to an instance or virtual method (not a static method). If |
HasThis | 32 | Specifies an instance or virtual method (not a static method). At run-time, the called method is passed a pointer to the target object as its first argument (the |
Standard | 1 | Specifies the default calling convention as determined by the common language runtime. Use this calling convention for static methods. For instance or virtual methods use |
VarArgs | 2 | Specifies the calling convention for methods with variable arguments. |
Examples
using namespace System;
using namespace System::Reflection;
using namespace System::Security;
public ref class MyClass1
{
public:
MyClass1( int i ){}
};
int main()
{
try
{
Type^ myType = MyClass1::typeid;
array<Type^>^types = gcnew array<Type^>(1);
types[ 0 ] = int::typeid;
// Get the public instance constructor that takes an integer parameter.
ConstructorInfo^ constructorInfoObj = myType->GetConstructor( static_cast<BindingFlags>(BindingFlags::Instance | BindingFlags::Public), nullptr, CallingConventions::HasThis, types, nullptr );
if ( constructorInfoObj != nullptr )
{
Console::WriteLine( "The constructor of MyClass1 that is a public instance method and takes an integer as a parameter is: " );
Console::WriteLine( constructorInfoObj );
}
else
{
Console::WriteLine( "The constructor of MyClass1 that is a public instance method and takes an integer as a parameter is not available." );
}
}
catch ( ArgumentNullException^ e )
{
Console::WriteLine( "ArgumentNullException: {0}", e->Message );
}
catch ( ArgumentException^ e )
{
Console::WriteLine( "ArgumentException: {0}", e->Message );
}
catch ( SecurityException^ e )
{
Console::WriteLine( "SecurityException: {0}", e->Message );
}
catch ( Exception^ e )
{
Console::WriteLine( "Exception: {0}", e->Message );
}
}
using System;
using System.Reflection;
using System.Security;
public class MyClass3
{
public MyClass3(int i) { }
public static void Main()
{
try
{
Type myType = typeof(MyClass3);
Type[] types = new Type[1];
types[0] = typeof(int);
// Get the public instance constructor that takes an integer parameter.
ConstructorInfo constructorInfoObj = myType.GetConstructor(
BindingFlags.Instance | BindingFlags.Public, null,
CallingConventions.HasThis, types, null);
if (constructorInfoObj != null)
{
Console.WriteLine("The constructor of MyClass3 that is a public " +
"instance method and takes an integer as a parameter is: ");
Console.WriteLine(constructorInfoObj.ToString());
}
else
{
Console.WriteLine("The constructor of MyClass3 that is a public instance " +
"method and takes an integer as a parameter is not available.");
}
}
catch (ArgumentNullException e)
{
Console.WriteLine("ArgumentNullException: " + e.Message);
}
catch (ArgumentException e)
{
Console.WriteLine("ArgumentException: " + e.Message);
}
catch (SecurityException e)
{
Console.WriteLine("SecurityException: " + e.Message);
}
catch (Exception e)
{
Console.WriteLine("Exception: " + e.Message);
}
}
}
Public Class MyClass1
Public Sub New(ByVal i As Integer)
End Sub
Public Shared Sub Main()
Try
Dim myType As Type = GetType(MyClass1)
Dim types(0) As Type
types(0) = GetType(Integer)
' Get the public instance constructor that takes an integer parameter.
Dim constructorInfoObj As ConstructorInfo = _
myType.GetConstructor(BindingFlags.Instance Or _
BindingFlags.Public, Nothing, _
CallingConventions.HasThis, types, Nothing)
If Not (constructorInfoObj Is Nothing) Then
Console.WriteLine("The constructor of MyClass1 that " + _
"is a public instance method and takes an " + _
"integer as a parameter is: ")
Console.WriteLine(constructorInfoObj.ToString())
Else
Console.WriteLine("The constructor MyClass1 that " + _
"is a public instance method and takes an " + _
"integer as a parameter is not available.")
End If
Catch e As ArgumentNullException
Console.WriteLine("ArgumentNullException: " + e.Message)
Catch e As ArgumentException
Console.WriteLine("ArgumentException: " + e.Message)
Catch e As SecurityException
Console.WriteLine("SecurityException: " + e.Message)
Catch e As Exception
Console.WriteLine("Exception: " + e.Message)
End Try
End Sub
End Class
Remarks
The native calling convention is the set of rules governing the order and layout of arguments passed to compiled methods. It also governs how to pass the return value, what registers to use for arguments, and whether the called or the calling method removes arguments from the stack.