wince 检测u盘

#include <Dbt.h>

添加消息WM_DEVICECHANGE的处理

LRESULT OnDevChange(WPARAM wParam, LPARAM lParam)//设备更换处理
{
PDEV_BROADCAST_VOLUME dbvDev = (PDEV_BROADCAST_VOLUME)lParam; 
if( dbvDev->dbcv_flags & DBTF_MEDIA ) // 判断是否为USB存储设备 
{ 
CString temp;
temp.Format(_T("USBDisk%c"), dbvDev->dbcv_name[0]); 
switch( wParam ) 
{ 
case DBT_DEVICEARRIVAL: // USB存储设备插入 
temp.AppendFormat(_T(" is inserted\n")); 
break; 
case DBT_DEVICEREMOVECOMPLETE: // USB存储设备移出 
temp.AppendFormat(_T(" is remove\n"));
break; 
default:
break;
} 
MessageBox(temp);
} 

return 0; 
}