MFC檢測串列埠插拔
阿新 • • 發佈：2019-02-17
以對話方塊工程為例
標頭檔案中
afx_msg BOOL OnDeviceChange(UINT nEventType, DWORD dwData);cpp中
ON_WM_DEVICECHANGE() 然後實現函式
BOOL CXXDlg::OnDeviceChange(UINT nEventType,DWORD dwData) { //0x4d36e978L, 0xe325, 0x11ce, 0xbf, 0xc1, 0x08, 0x00, 0x2b, 0xe1, 0x03, 0x18 //DEV_BROADCAST_DEVICEINTERFACE* dbd = (DEV_BROADCAST_DEVICEINTERFACE*) dwData; DEV_BROADCAST_HDR* dhr = (DEV_BROADCAST_HDR *)dwData; TRACE("--nEventType--:%d\n", nEventType); switch (nEventType) { case DBT_DEVICEREMOVECOMPLETE://移除裝置 TRACE("--DEVICE REMOVE--\n"); #if 1 if(dhr->dbch_devicetype == DBT_DEVTYP_PORT) { PDEV_BROADCAST_PORT lpdbv = (PDEV_BROADCAST_PORT)dhr; int len = strlen(lpdbv->dbcp_name); CString name(lpdbv->dbcp_name);//COM8 int port = 0; sscanf(name.GetBuffer(0), "COM%d", &port); } #endif TRACE("--DEVICE REMOVE--end\n"); break; case DBT_DEVICEARRIVAL://新增裝置 TRACE("--DEVICE ARRIVAL--\n"); #if 1 if(dhr->dbch_devicetype == DBT_DEVTYP_PORT) { PDEV_BROADCAST_PORT lpdbv = (PDEV_BROADCAST_PORT)dhr; int len = strlen(lpdbv->dbcp_name); CString name(lpdbv->dbcp_name);//COM8 int port = 0; sscanf(name.GetBuffer(0), "COM%d", &port); } #endif break; default: break; } return TRUE; }