C / C++ / MFC

typedef struct linedialparams_tag {
  DWORD  dwDialPause;
  DWORD  dwDialSpeed;
  DWORD  dwDigitDuration;
  DWORD  dwWaitForDialtone;
} LINEDIALPARAMS, FAR *LPLINEDIALPARAMS; 

ÿVOTD: 14 "Make every effort to live in peace with all men and to be holy; without holiness no one will see the Lord.
15 See to it that no one misses the grace of God and that no bitter root grows up to cause trouble and defile many." - Heb 12:14-15

try
{
    if(!keyOpen(...)) throw 1;
    if(!keyRead(...)) throw 2;
    keyClose(...);
    if(!keyOpen(...)) throw 1;
    if(!keyRead(...)) throw 2;
    keyClose(...);
    ...
}
catch(int i)
{
    if(i>1) keyClose(...);
    MsgBox("err");
    return false;
}