🔒 Locked

Frustrating problem

Started by bitstream Dec 19, 2001 at 11:16 PM 5 replies 650+ views

Original Post

Dec 19, 2001 at 11:16 PM

I''m probably overlooking something stupid but I can''t seem to find it. here''s my problem. I''m trying to comile a small program using DDraw. I''m getting an error on the following lines. LPDIRECTDRAW4 m_lpDirectDraw4; LPDIRECTDRAWSURFACE4 m_lpddPrimary; LPDIRECTDRAWSURFACE4 m_lpddBackBuffer; DDRAWSURFACEDESC4 m_ddsd; I''ve #included the ddraw.h file but VC++ is giving me errors as if it doesnt see the type definitions in the header file. However if I change my code to this it compiles errorless. LPDIRECTDRAW m_lpDirectDraw4; LPDIRECTDRAWSURFACE m_lpddPrimary; LPDIRECTDRAWSURFACE m_lpddBackBuffer; DDRAWSURFACEDESC m_ddsd; BTW those arent the interfaces I want to use. This makes no sense to me. Both ways i''ve listed here should work. What''s even worse I tried to compule Microsofts DDraw samples...got the same thing. Keep in mind I DO have the proper path for the header file. Any thoughts?

valg3

Dec 19, 2001 at 11:27 PM

Have you included the proper *lib files into the linker?

bitstream

Author

bitstream

Dec 19, 2001 at 11:33 PM

Yes I have actually but no dice.

GoofProg

Dec 19, 2001 at 11:42 PM

You are trying to use a different version of DirectX objects.
LPDIRECTDRAW4 declares a DX5 version of the object
LPDIRECTDRAW declares a DX3 version of the object
You need to call some COM functions to select the correct version.

bitstream

Author

bitstream

Dec 19, 2001 at 11:53 PM

The sample code I gave are only declarations. Making a pointer to the proper COM interface comes later(like in a function). But first thing''s first, I need to have the proper data type to hold the interface pointer. In this case LPDIRECTDRAW4 or 7 or whatever. The typdef for LPDIRECTDRAW4 in the header is
typedef struct IDirectDraw4 FAR *LPDIRECTDRAW4;

So to answer your kind reply, I don''t think that''s it.
But thanks anyway...keep em comin''

scaught

Dec 20, 2001 at 12:03 AM

Is your DirectX SDK directories listed before the Microsoft ones in your include paths? It kinda sorta sounds to me like it''s finding the headers that came with MSVC and not a more recent version....

-scott

bitstream

Author

bitstream

Dec 20, 2001 at 12:13 AM

Thanks scaught! That was it. I knew it was something stupid that I was overlooking!

Topic Locked

This topic has been locked by a moderator. New replies are not allowed.