LRESULT CALLBACK WndProcIn(HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam){
PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR)lParam;
PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb;
char driveName;
CString diskpath = "";
if(uMsg == WM_DEVICECHANGE){
if(wParam == DBT_DEVICEARRIVAL){
driveName = FirstDriveFromMask(lpdbv->dbcv_unitmask);
diskpath.Format("%c:\\",driveName);
Son->USBIn(diskpath);
}
}
return DefWindowProc(hWnd, uMsg, wParam, lParam);
}
LRESULT CALLBACK WndProc(HWND hWnd,UINT msg,WPARAM wParam,LPARAM lParam)
{
switch(msg)
{
case WM_DEVICECHANGE:
{
PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR) lParam;
switch(wParam)
{
case DBT_DEVICEARRIVAL:
if (lpdb->dbch_devicetype == DBT_DEVTYP_VOLUME)
{
PDEV_BROADCAST_VOLUME lpdv = (PDEV_BROADCAST_VOLUME) lpdb;
TCHAR z = FirstDriveFromMask(lpdv->dbcv_unitmask);
if (DriveType(z) == DT_REMOVABLE)
PendriveArrive(z);
}
}
}
}
return DefWindowProc(hWnd,msg,wParam,lParam);
}
/*************************************
* void OnDeviceChange (HWND , WPARAM , LPARAM )
* 功能 处理 WM_DEVICECHANGE 消息
* 参数为窗口消息
**************************************/
void OnDeviceChange (HWND hwnd, WPARAM wParam, LPARAM lParam)
{
// 获取 PDEV_BROADCAST_HDR 参数
PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR)lParam;
char szMsg[256];
HDC hdc = GetDC(hwnd);
DWORD dwStrLen;
SIZE sz;
TEXTMETRIC tm;
switch(wParam)
{
case DBT_DEVICEARRIVAL:
// 插入 CD 或者 DVD 到光驱中
if (lpdb -> dbch_devicetype == DBT_DEVTYP_VOLUME)
{
// 获取参数
PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb;
// 判断标志
if (lpdbv -> dbcv_flags & DBTF_MEDIA)
{
wsprintf (szMsg, "Drive %c: Media has arrived.",
// 根据mask获取盘符，
// dbcv_unitmask的bit依次表示A:，B:...，如果为1，表示是该盘符，
FirstDriveFromMask(lpdbv ->dbcv_unitmask));
}
else
// 标志不配置，打印事件ID
wsprintf (szMsg, "Message: %u.", wParam);
}
else
// 设置类型不配置，打印事件ID
wsprintf (szMsg, "Message: %u.", wParam);
break;
case DBT_DEVICEREMOVECOMPLETE:
// 光驱弹出
if (lpdb -> dbch_devicetype == DBT_DEVTYP_VOLUME)
{
// 获取参数
PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb;
// 检查标志
if (lpdbv -> dbcv_flags & DBTF_MEDIA)
{
wsprintf (szMsg, "Drive %c: Media was removed.",
FirstDriveFromMask(lpdbv ->dbcv_unitmask));
}
else
wsprintf (szMsg, "Message: %u.", wParam);
}
else
wsprintf (szMsg, "Message: %u.", wParam);
break;
default:
// 其他设备改变情况，打印设备ID
wsprintf (szMsg, "Message: %u.", wParam);
}
// 在界面上输出设备变更消息
dwStrLen = lstrlen(szMsg);
// 计算输出位置
GetTextExtentPoint32(hdc, szMsg, dwStrLen, &sz);
YStart += sz.cy;
GetTextMetrics(hdc, &tm);
YStart -= tm.tmOverhang;
// TODO 窗口滚动
TextOut(hdc, 10, YStart, szMsg, dwStrLen);
DeleteDC( hdc ); // 释放DC
}
