direct music 9, what is COM?

Graphics and GPU Programming Programming

Started by johnnyBravo October 28, 2003 01:55 AM

4 comments, last by johnnyBravo 20 years, 6 months ago

johnnyBravo

100

Author

October 28, 2003 01:55 AM

just some sample code what is this COM? ive never seen it before, its from the dx9 tutorial for direct music No.1


CoInitialize(NULL);
    
    // Create loader object

    CoCreateInstance( CLSID_DirectMusicLoader, NULL, CLSCTX_INPROC, 
                      IID_IDirectMusicLoader8, (void**)&g_pLoader );

	// Close down COM

		CoUninitialize();

patindahat

118

October 28, 2003 02:18 AM

Component Object Model, all of DirectX is built off it. Many parts of it are integrated into .NET. Check out microsoft''s website about it. COM and COM+ were their babies until .NET came around (and I must say, after the steep learning curve at the start COM does its job very well).

Pat

Pipo DeClown

804

October 28, 2003 09:02 AM

I don''t know why Direct3D doesn''t require you to do this..
This is done in IDirect3D* Direct3DxCreate()?

--
You''re Welcome,
Rick Wong
- sitting in his chair doing the most time-consuming thing..

Nik02

4,359

October 28, 2003 09:10 AM

quote:Original post by Pipo DeClown
I don''t know why Direct3D doesn''t require you to do this..
This is done in IDirect3D* Direct3DxCreate()?

Probably. DDraw7 used to require it, but not D3D8 or D3D9, at least on my apps.

-Nik

Niko Suni

Aldacron

4,545

October 28, 2003 10:19 AM

It was never required by DirectDraw. In any version. You can use this technique with any of the DX modules though. DirectMusic is the only module that does not provide a *Create function. I read somewhere a while back the reason why, but can''t remember what it was.

--- Official D Blog | Learning D | The One With D | D Bits