// Define a PInvoke method for this class.
public MethodBuilder DefinePInvokeMethod
(String name, String dllName, String entryName,
MethodAttributes attributes,
CallingConventions callingConvention,
Type returnType, Type[] parameterTypes,
CallingConvention nativeCallConv,
CharSet nativeCharSet)
{
try
{
// Lock down the assembly while we do this.
StartSync();
// Validate the parameters.
if (name == null)
{
throw new ArgumentNullException("name");
}
if (name == String.Empty)
{
throw new ArgumentException(_("Emit_NameEmpty"));
}
if (dllName == null)
{
throw new ArgumentNullException("dllName");
}
if (dllName == String.Empty)
{
throw new ArgumentException(_("Emit_NameEmpty"));
}
if (entryName == null)
{
throw new ArgumentNullException("entryName");
}
if (entryName == String.Empty)
{
throw new ArgumentException(_("Emit_NameEmpty"));
}
if ((type.Attributes & TypeAttributes.ClassSemanticsMask)
== TypeAttributes.Interface)
{
throw new ArgumentException
(_("Emit_PInvokeInInterface"));
}
if ((attributes & MethodAttributes.Abstract) != 0)
{
throw new ArgumentException
(_("Emit_PInvokeAbstract"));
}
// Create the underlying method.
MethodBuilder method = new MethodBuilder
(this, name,
attributes | MethodAttributes.PinvokeImpl,
callingConvention, returnType, parameterTypes);
// Build the attributes for the PInvoke declaration.
int pinvAttrs = (((int)nativeCallConv) << 8);
switch (nativeCharSet)
{
case CharSet.Ansi: pinvAttrs |= 0x0002; break;
case CharSet.Unicode: pinvAttrs |= 0x0004; break;
case CharSet.Auto: pinvAttrs |= 0x0006; break;
default: break;
}
// Create the PInvoke declaration on the method.
if (entryName == name)
{
entryName = null;
}
lock (typeof(AssemblyBuilder))
{
MethodBuilder.ClrMethodAddPInvoke
(((IClrProgramItem)method).ClrHandle,
pinvAttrs, dllName, entryName);
}
// Return the method to the caller.
return(method);
}
finally
{
EndSync();
}
}
