//?HIDUSB.cpp?:?定義?DLL?應(yīng)用程序的入口點。
//

#include?“stdafx.h“
#include?“hidusb.h“
extern?“C“?{
//?Declare?the?C?libraries?used
#include?“setupapi.h“		//?Must?link?in?setupapi.lib
#include?“hidsdi.h“			//?Must?link?in?hid.lib
}

#ifdef?_MANAGED
#pragma?managed（push?off）
#endif

BOOL?APIENTRY?DllMain（?HMODULE?hModule
???????????????????????DWORD??ul_reason_for_call
???????????????????????LPVOID?lpReserved
					?）
{
????return?TRUE;
}

BOOL?__stdcall?DLLAPI?SearchHIDDev（unsigned?short?nVendorID?unsigned?short?nProductID?int?*?piDevNum?char?*?acInfo）{
	struct?_GUID?GUID;
	int?iRetErr;
	SP_INTERFACE_DEVICE_DATA?DeviceInterfaceData;
	HANDLE?PnPHandle=NULLHIDHandle=NULL;
	struct?{
		DWORD?cbSize;?
		char?DevicePath[256];
	}?FunctionClassDeviceData;
	HIDD_ATTRIBUTES?HIDAttributes;
	SECURITY_ATTRIBUTES?SecurityAttributes;
	int?Device;
	ULONG?BytesReturned;
	bool?Success;
	*?piDevNum?=?0;
????
//?Initialize?the?GUID?array?and?setup?the?security?attributes?for?Win2000
	HidD_GetHidGuid（&GUID）;
	SecurityAttributes.nLength?=?sizeof（SECURITY_ATTRIBUTES）;?
	SecurityAttributes.lpSecurityDescriptor?=?NULL;?
	SecurityAttributes.bInheritHandle?=?false;?

//?Get?a?handle?for?the?Plug?and?Play?node?and?request?currently?active?devices
	PnPHandle?=?SetupDiGetClassDevs（&GUID?NULL?NULL?DIGCF_PRESENT|DIGCF_INTERFACEDEVICE）;
	if?（int（PnPHandle）?==?-1）?{	
		strcpy（acInfo“Could?not?attach?to?PnP?node.“）;//printf（“Could?not?attach?to?PnP?node“）;?
		iRetErr?=?GetLastError（）;
		return?iRetErr;?
	}
	
//?Lets?look?for?a?maximum?of?22?Devices
	for?（Device?=?0;?Device?//?Initialize?our?data
		DeviceInterfaceData.cbSize?=?sizeof（DeviceInterfaceData）;
//?Is?there?a?device?at?this?table?entry
		Success?=?SetupDiEnumDeviceInterfaces（PnPHandle?NULL?&GUID?Device?&DeviceInterfaceData）;
		if?（Success）?{
//?There?is?a?device?here?get?it‘s?name
			FunctionClassDeviceData.cbSize?=?5;
			Success?=?SetupDiGetDeviceInterfaceDetail（PnPHandle?&DeviceInterfaceData?
				（PSP_INTERFACE_DEVICE_DETAIL_DATA）&FunctionClassDeviceData?256?&BytesReturned?NULL）;
			if?（!Success）?{	
				strcpy（acInfo“Could?not?find?the?system?name?for?this?device.“）;
				iRetErr?=?GetLastError（）;
				if（PnPHandle）
		????????????????SetupDiDestroyDeviceInfoList（PnPHandle）;
				return?iRetErr;?
			}
//?Can?now?open?this?device
			HIDHandle?=?CreateFile（FunctionClassDeviceData.DevicePath?GENERIC_READ|GENERIC_WRITE?
				FILE_SHARE_READ|FILE_SHARE_WRITE?&SecurityAttributes?OPEN_EXISTING?0?NULL）;
			if?（HIDHandle?==?INVALID_HANDLE_VALUE）?
				sprintf（acInfo“Could?not?open?HID?#%d?Errorcode?=?%d\n“?Device?GetLastError（））;
			else?{
				//?Get?the?information?about?this?HID
				Success?=?HidD_GetAttributes（HIDHandle?&HIDAttributes）;
				if?（!Success）?{?
					strcpy（acInfo“Could?not?get?HID?attributes.“）;?
					iRetErr?=?GetLastError（）;
					if（PnPHandle）
		????????????????SetupDiDestroyDeviceInfoList（PnPHa