Well not a driver, but a USB HID device - so sort of a driver? I've got this credit card reader that is a USBHID device - so you need to use the WinDDK. Here's my story - I actually got this working in VC++ 6.0 about 3 years ago and now I can't figure out how to setup my project anymore. But that's just what I did - I created a COM object and linked to the DDK (from VC++ 6.0). Now I've upgraded to VC++ 2008 and just want to take the best route - if I have to learn the right way of doing it along the way, BONUS! I'm all ears. Just because I got it working before doesn't mean it was the best way of doing it anyway - and just the same, I can't get my project linked with MFC. Current project settings: (with errors below) Use MFC in a Static Library Not Using ATL Additional include directories: C:\WinDDK\7600.16385.0\inc C:\WinDDK\7600.16385.0\inc\api C:\WinDDK\7600.16385.0\inc\crt C:\WinDDK\7600.16385.0\inc\mfc42 C:\WinDDK\7600.16385.0\inc\ddk C:\WinDDK\7600.16385.0\inc\api\dao360 Ignore standard include path: No Additional library directories: C:\WinDDK\7600.16385.0\lib\wxp\i386 C:\WinDDK\7600.16385.0\lib\Mfc\i386 C:\WinDDK\7600.16385.0\lib\ATL\i386 Additional dependencies: ntdll.lib msvcrtd.lib Errors: 1>Linking... 1>LINK : warning LNK4075: ignoring '/INCREMENTAL' due to '/RELEASE' specification 1>LINK : warning LNK4075: ignoring '/DELAYLOAD' due to '/DRIVER' specification 1>MathHelper.obj : warning LNK4075: ignoring '/EDITANDCONTINUE' due to '/DRIVER' specification 1> Creating library C:\dev\USBHIDCardReader\Debug\USBHIDCardReader.lib and object C:\dev\USBHIDCardReader\Debug\USBHIDCardReader.exp 1>LINK : error LNK2001: unresolved external symbol _DriverEntry 1>USBHIDCrdRdrThread.obj : error LNK2001: unresolved external symbol __afxForceEXCLUDE 1>MathHelper.obj : error LNK2001: unresolved external symbol __afxForceEXCLUDE 1>stdafx.obj : error LNK2001: unresolved external symbol __afxForceEXCLUDE 1>StringHelper.obj : error LNK2001: unresolved external symbol __afxForceEXCLUDE 1>USBHIDCardReader.obj : error LNK2001: unresolved external symbol __afxForceEXCLUDE 1>USBHIDCrdRdrThread.obj : error LNK2001: unresolved external symbol __afxForceUSRDLL 1>MathHelper.obj : error LNK2001: unresolved external symbol __afxForceUSRDLL 1>stdafx.obj : error LNK2001: unresolved external symbol __afxForceUSRDLL 1>StringHelper.obj : error LNK2001: unresolved external symbol __afxForceUSRDLL 1>USBHIDCardReader.obj : error LNK2001: un

I need to create another project with its own import settings, so I thought a DLL would be my best bet, however I never understood how to properly export functions other than with COM. Using the "New Project" dialog in VC++, I thought my only option was to use "MFC DLL". You're saying otherwise though and that sure sounds good. What type of project should I create? And how do I add my COM class to this project once it's created?

I'm trying to create a DLL that links to the DDK, with a COM object as my interface to the DLL... Can this be done without MFC? (there are no dialogs at all)...

Did you ever figure out how to use the WinDDK with MFC? If yes, I'd so much appreciate it if you could tell me your project settings!

DavidCrow wrote:

Range range = sheet.GetRange(COleVariant("A1"), COleVariant("A1"));Interior interior = range.GetInterior();interior.SetColorIndex(COleVariant(3L));

I've been looking all over for how to change the color - thanks to you it works - but just a simple question- Why is 3L = red? How does this color index thing work? Is there a way to use RGB with the 3 params to get any color? Thank you again! Mike