I'm trying to write a blinding and I found both IID_ITaskbarList and IID_ITaskbarList2 are defined but IID_ITaskbarList3 isn't. Any reason why it isn't defined? sorry if it sounds such a naive question, I'm new to COM and D interop. I knew a thing or two about PInvokes with C#.

Then how do I define it myself?

I've tried this:

> GUID IID_ITaskbarList3 = createGUIDFromString("{ea1afb91-9e28-4b86-90e9-9e9f8a5eefaf}");

> GUID createGUIDFromString(string guidStr) {
>		GUID guid;
>		wchar* GUID_STR = toUTFz!(wchar*)(guidStr);
>		HRESULT hr = IIDFromString(GUID_STR, &guid);
>		assert(SUCCEEDED(hr));
>		return guid;
>	}

I'm unsure if it's the proper way to do it (if not, please show me the right one)

But the call to CoCreateInstance() still fails to access any member of m_pITaskBarList3 object, so I'm making sure I'm passing the correct arguments to the function. The memory access error is:

> object.Error@(0): Access Violation



> HRESULT hr = CoCreateInstance(&CLSID_TaskbarList, null, CLSCTX_INPROC_SERVER, &IID_ITaskbarList3,
> cast(void **)   &m_pITaskBarList3);
> assert(hr == S_OK);

The assert() doesn't run, so the error is somewhere else... I guess.

On Sunday, 15 October 2017 at 15:13:09 UTC, Nieto wrote:
> I'm trying to write a blinding and I found both IID_ITaskbarList and IID_ITaskbarList2 are defined but IID_ITaskbarList3 isn't. Any reason why it isn't defined? sorry if it sounds such a naive question, I'm new to COM and D interop. I knew a thing or two about PInvokes with C#.
>
> Then how do I define it myself?
>
> I've tried this:
>
>> GUID IID_ITaskbarList3 = createGUIDFromString("{ea1afb91-9e28-4b86-90e9-9e9f8a5eefaf}");
>
>> GUID createGUIDFromString(string guidStr) {
>>		GUID guid;
>>		wchar* GUID_STR = toUTFz!(wchar*)(guidStr);
>>		HRESULT hr = IIDFromString(GUID_STR, &guid);
>>		assert(SUCCEEDED(hr));
>>		return guid;
>>	}
>
> I'm unsure if it's the proper way to do it (if not, please show me the right one)
>
> But the call to CoCreateInstance() still fails to access any member of m_pITaskBarList3 object, so I'm making sure I'm passing the correct arguments to the function. The memory access error is:
>
>> object.Error@(0): Access Violation
>
>
>
>> HRESULT hr = CoCreateInstance(&CLSID_TaskbarList, null, CLSCTX_INPROC_SERVER, &IID_ITaskbarList3,
>> cast(void **)   &m_pITaskBarList3);
>> assert(hr == S_OK);
>
> The assert() doesn't run, so the error is somewhere else... I guess.

Did you call CoInitialize before creating anything? Is your ITaskbarList3 defined as interface?

Here is the simple example anyway
https://gist.github.com/Superbelko/277d86a17d497eae85a7f1788bfd83b4



There are no predefined GUID's and declarations for some stuff because standard WinAPI bindings is incomplete, you can probably contribute and add some
https://github.com/dlang/druntime

On Monday, 16 October 2017 at 05:06:26 UTC, evilrat wrote:
> On Sunday, 15 October 2017 at 15:13:09 UTC, Nieto wrote:
>> I'm trying to write a blinding and I found both IID_ITaskbarList and IID_ITaskbarList2 are defined but IID_ITaskbarList3 isn't. Any reason why it isn't defined? sorry if it sounds such a naive question, I'm new to COM and D interop. I knew a thing or two about PInvokes with C#.
>>
>> Then how do I define it myself?
>>
>> I've tried this:
>>
>>> GUID IID_ITaskbarList3 = createGUIDFromString("{ea1afb91-9e28-4b86-90e9-9e9f8a5eefaf}");
>>
>>> GUID createGUIDFromString(string guidStr) {
>>>		GUID guid;
>>>		wchar* GUID_STR = toUTFz!(wchar*)(guidStr);
>>>		HRESULT hr = IIDFromString(GUID_STR, &guid);
>>>		assert(SUCCEEDED(hr));
>>>		return guid;
>>>	}
>>
>> I'm unsure if it's the proper way to do it (if not, please show me the right one)
>>
>> But the call to CoCreateInstance() still fails to access any member of m_pITaskBarList3 object, so I'm making sure I'm passing the correct arguments to the function. The memory access error is:
>>
>>> object.Error@(0): Access Violation
>>
>>
>>
>>> HRESULT hr = CoCreateInstance(&CLSID_TaskbarList, null, CLSCTX_INPROC_SERVER, &IID_ITaskbarList3,
>>> cast(void **)   &m_pITaskBarList3);
>>> assert(hr == S_OK);
>>
>> The assert() doesn't run, so the error is somewhere else... I guess.
>
> Did you call CoInitialize before creating anything? Is your ITaskbarList3 defined as interface?
>
> Here is the simple example anyway
> https://gist.github.com/Superbelko/277d86a17d497eae85a7f1788bfd83b4
>
>
>
> There are no predefined GUID's and declarations for some stuff because standard WinAPI bindings is incomplete, you can probably contribute and add some
> https://github.com/dlang/druntime

Yes, I did call CoInitialize(null) before call CoCreateInstance().
I thoguht the GUID was some kind of constant value to identify the ITaskbarList3 (the struct name is even IID). I was dead wrong lol but I was just starting with the COM world. I defined CLSID_ITaskbarList3 like your IID_ITaskbarList3. I realized my mistake: out of C++ habit, I declared the ITaskbarList3 as a pointer! That's why it wasn't working. I didn't realized it until I read your code. Again, thank you very much. I'll try contibute to the WinAPI binding once mine is complete.

Have a nice day! :)