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[cplusplus]

Hi,all
   I want to write a custom installer for a display mirror driver
and the only example for custom installer I've got is the sample from ddk,\ntddk\src\general\setup\install.But I failed to use the example to install my mirror driver.I stepped into the source code and found the line:
SetupDiSetDeviceRegistryProperty(DeviceInfoSet,
       &DeviceInfoData,
       SPDRP_HARDWAREID,
       (LPBYTE)HardwareId,
       (lstrlen(HardwareId)+1+1)*sizeof(TCHAR)))
failed with error code ERROR_INVALID_PARAMETER
I guess HardwareId is invalid,how can i fill this with a
correct value?

and suggestion?
Thanks in advance
            Ren zhijie

[Stefan Krueger]

Moving to General/Other Forum since this doesn't seem to be releated to MSI.