nvapi.lib error

[King64]

Hi guys, i'm working around my Gigabyte GeForce 210, and i'd like to be able to access NVidia APIs. I wrote a very basic program to load and load nvapi.dll, using nvapi.lib that comes with NVidia SDK, but the EBasic compiler reports following errors:

Code Select Expand


Unresolved external NvAPI_Initialize
Error: Unresolved extern NvAPI_Initialize
Error: Unresolved extern NvAPI_Unload

and that's is the code:

Code Select Expand


$USE "nvapi.lib"

DECLARE EXTERN NvAPI_Initialize(),INT
DECLARE EXTERN NvAPI_Unload(),INT

OPENCONSOLE

IF NvAPI_Initialize() <> 0
PRINT "Unable to Initialize NVAPI."
ELSE
PRINT "Library OK"
NvAPI_Unload()
DO:UNTIL INKEY$<>""
ENDIF
END


Any suggestion?  Thanks in advance 

[Andy]

You need to make sure the nvapi.lib file is in your C:\IWBDev3\libs folder.

Alternatively, compile the source code in the same folder as the nvapi lib file.

Try that.

Andy.

[King64]

Hi Andy, the nvapi.lib is present in the libs dir. The NVAPI documentation says:

NvAPI cannot be dynamically linked to applications. You must create a static link to the library and then call NvAPI_Initialize(), which loads nvapi.dll dynamically...

So i write a small wrapper like a static .lib file, adding nvapi.lib into the project

Code Select Expand


$USE "nvapi.lib"

DECLARE CDECL EXTERN NvAPI_Initialize(),INT
DECLARE CDECL EXTERN NvAPI_Unload(),INT

GLOBAL __NvAPI_Initialize
GLOBAL __NvAPI_Unload

SUB __NvAPI_Initialize(),INT

RETURN NvAPI_Initialize()

ENDSUB


SUB __NvAPI_Unload(),INT

RETURN NvAPI_Unload()

ENDSUB

and using it

Code Select Expand


$USE "nVGPU.lib" ' my wrapper

DECLARE EXTERN __NvAPI_Initialize(),INT
DECLARE EXTERN __NvAPI_Unload(),INT

OPENCONSOLE

IF __NvAPI_Initialize() <> 0
PRINT "Unable to Initialize NVAPI."
ELSE
PRINT "Library OK"
__NvAPI_Unload()
ENDIF
DO:UNTIL INKEY$<>""
END

but it returns the same error