- 1 year ago
MIDL2011 error when trying to use INotifyPropertyChanged
The MIDL2011 error is a compilation error that occurs when using the INotifyPropertyChanged
interface in MIDL code. This interface is typically used in .NET applications to notify when a property value has changed. Here are a few steps you can take to resolve this error:
Ensure that you have included the appropriate header files: Make sure that you have included the appropriate header files in your MIDL code. The
INotifyPropertyChanged
interface is defined in theSystem.ComponentModel
namespace in the .NET Framework, so you may need to include theSystem.ComponentModel.idl
file in your MIDL code.Declare the interface as a typedef: Declare the
INotifyPropertyChanged
interface as a typedef in your MIDL code. For example:cppimport "System.ComponentModel.idl";
[
object,
uuid(01234567-89AB-CDEF-0123-456789ABCDEF),
dual,
helpstring("IMyInterface Interface"),
pointer_default(unique)
]
typedef struct IMyInterface
{
HRESULT QueryInterface([in] REFIID riid, [out, iid_is(riid)] void** ppvObject);
ULONG AddRef(void);
ULONG Release(void);
[propget] HRESULT PropertyChanged([in] BSTR propertyName, [out, retval] VARIANT_BOOL* result);
[propput] HRESULT PropertyChanged([in] BSTR propertyName, [in] VARIANT_BOOL newValue);
} IMyInterface;
Compile the code with the appropriate flags: To compile MIDL code that uses the
INotifyPropertyChanged
interface, you may need to include the/env win32
or/env x64
flag when running themidl.exe
compiler. For example:bashmidl.exe /env win32 MyInterface.idl
By including the appropriate header files, declaring the interface as a typedef, and compiling the code with the appropriate flags, you can resolve the MIDL2011 error when using the INotifyPropertyChanged
interface in your MIDL code.