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pfnHotPlugEjectDevice HotPlugEjectDevice = NULL;
HMODULE hHotPlug = LoadLibrary("HotPlug.dll");
if(hHotPlug == NULL)
{
printf("LoadLibrary(HotPlug.dll) Error:%d\n", GetLastError());
return FALSE;
}
//get functions
HotPlugEjectDevice = (pfnHotPlugEjectDevice)GetProcAddress(hHotPlug, "HotPlugEjectDevice");
BOOL bResult = HotPlugEjectDevice(NULL, "USB\\Vid_0d7d&Pid_0150\\4D3B190303C0");