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Detecting Hardware Insertion and/or Removal

, 19 Jun 2006
A user-mode application to detect hardware add/remove with WM_DEVICECHANGE and RegisterDeviceNotification()
// HWDetectDlg.h : header file
//

#pragma once
#include <Dbt.h>
#include <setupapi.h>
#include "afxcmn.h"
#include "afxwin.h"


// CHWDetectDlg dialog
class CHWDetectDlg : public CDialog
{
// Construction
public:
	CHWDetectDlg(CWnd* pParent = NULL);	// standard constructor

// Dialog Data
	enum { IDD = IDD_HWDETECT_DIALOG };

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);	// DDX/DDV support


// Implementation
protected:
	HICON m_hIcon;
	/** device class image list */
	SP_CLASSIMAGELIST_DATA m_imgList;
	/** the root item of the tree control */
	HTREEITEM hRoot;
	/** the selected node of the tree control
	 * only use during context menu
	 */
	HTREEITEM hSelectedDev;
	CMenu m_muMain;
	CMenu* m_muPopup;
	//HDEVINFO hDevInfo;

	// Generated message map functions
	virtual BOOL OnInitDialog();
	afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
	afx_msg void OnPaint();
	afx_msg HCURSOR OnQueryDragIcon();
	afx_msg LRESULT OnMyDeviceChange(WPARAM wParam, LPARAM lParam);
	void UpdateDevice(PDEV_BROADCAST_DEVICEINTERFACE pDevInf, WPARAM wParam);
	CString GetClassDesc(const GUID* pGuid);
	int GetClassImgIndex(const GUID* pGuid);
	/** Get the HTREEITEM of a specific device class 
	 * @param pGuid the device "class" GUID (not device interface class)
	 * @param wParam DBT_DEVICEARRIVAL if adding, others if removing
	 *        when adding, we will add the class node if it is not found
	 * @return the HTREEITEM of the class node, NULL if removing and class node not found 
	 */
	HTREEITEM GetClassItem(const GUID* pGuid, WPARAM wParam);

	/** Find a given device info by enumeration device info set
	 * @param hDevInfo [IN] A handle open by SetupDiGetClassDevs
	 * @param szDevId [IN] the device instance name, eg. USB\Vid_04e8&Pid_503b\0002F9A9828E0F06
	 * @param spDevInfoData [OUT] the device info
	 * @return TRUE if found, FALSE if not found or error
	 */
	BOOL FindDevice(HDEVINFO& hDevInfo, CString& szDevId, SP_DEVINFO_DATA& spDevInfoData);
	DECLARE_MESSAGE_MAP()

public:
	CTreeCtrl m_ctrlTree;
	afx_msg void OnContextMenu(CWnd* /*pWnd*/, CPoint /*point*/);
	afx_msg void OnPopupDisable();
	CEdit m_ctrlEdit;
};

// Compute Device Class: this is used to get the tree contrl root icon
static const GUID GUID_DEVCLASS_COMPUTER = 
{ 0x4D36E966, 0xE325, 0x11CE, { 0xBF, 0xC1, 0x08, 0x00, 0x2B, 0xE1, 0x03, 0x18} };

// Copy from HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceClasses
static const GUID GUID_DEVINTERFACE_LIST[] = 
{
	// GUID_DEVINTERFACE_USB_DEVICE
	{ 0xA5DCBF10, 0x6530, 0x11D2, { 0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED } },

	// GUID_DEVINTERFACE_DISK
	{ 0x53f56307, 0xb6bf, 0x11d0, { 0x94, 0xf2, 0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b } },

	// GUID_DEVINTERFACE_HID, 
	{ 0x4D1E55B2, 0xF16F, 0x11CF, { 0x88, 0xCB, 0x00, 0x11, 0x11, 0x00, 0x00, 0x30 } },
			 
	// GUID_NDIS_LAN_CLASS
	{ 0xad498944, 0x762f, 0x11d0, { 0x8d, 0xcb, 0x00, 0xc0, 0x4f, 0xc3, 0x35, 0x8c } }

	//// GUID_DEVINTERFACE_COMPORT
	//{ 0x86e0d1e0, 0x8089, 0x11d0, { 0x9c, 0xe4, 0x08, 0x00, 0x3e, 0x30, 0x1f, 0x73 } },

	//// GUID_DEVINTERFACE_SERENUM_BUS_ENUMERATOR
	//{ 0x4D36E978, 0xE325, 0x11CE, { 0xBF, 0xC1, 0x08, 0x00, 0x2B, 0xE1, 0x03, 0x18 } },

	//// GUID_DEVINTERFACE_PARALLEL
	//{ 0x97F76EF0, 0xF883, 0x11D0, { 0xAF, 0x1F, 0x00, 0x00, 0xF8, 0x00, 0x84, 0x5C } },

	//// GUID_DEVINTERFACE_PARCLASS
	//{ 0x811FC6A5, 0xF728, 0x11D0, { 0xA5, 0x37, 0x00, 0x00, 0xF8, 0x75, 0x3E, 0xD1 } }
};

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About the Author

Sam NG

Hong Kong Hong Kong
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