undefined symbol problem in BCB V6.

I am trying to create a function that is invoked when a user closes a form. The function should put a message up on the screen asking if the user really wishes to close (yes, no or cancel). I think the problem may be that i am missing a header file or some other simple thing.

My code is:

TMessageButton Option;
TMessageButtons msgButtons;
msgButtons << smbYes << smbNo << smbCancel;
Action = caFree;
if(ClientDataSet1->State == dsEdit || ClientDataSet1->State == dsInsert)
{
ClientDataSet1->Post();
}
if(ClientDataSet1->ChangeCount > 0)
{
Option = Application->MessageBox("You have pending updates.
Do you want to write them to the database?",
"Pending Updates", msgButtons, smsWarning, smbYes, smbNo);
if(Option == smbYes)
{
ClientDataSet1->ApplyUpdates(-1);
}
else
if(Option == smbCancel)
{
Action = caNone;
}
}


The error says that TMessage Button is an undefined symbol...do i have a definition missing somewhere or what?!

All help appreciated.

I beleive you meant to use message dialog. You would want something like:

MessageDlg("Are you sure you want to exit?", mtConfirmation, TMsgDlgButtons() << mbYes << mbNo << mbCancel, 0)

yip...you're right. i did!

Thanks for that! I had realised that was the command i needed but was unsure of the syntax...thanx for the example...much appreciated