Easy work for experienced coder.
I have an appoinment book which already protects against overwrites for "Recurring" appointments.
However, I do not have an overwrite protection for users who would be entering appointments for day to day.
If a user would book an appointment at 10 am with Reba for 1 hour, and then the user mistakenly tries to book at 9 am for 2 hours, the 1 hour appointment is overwritten.( it's actually still in the database, but not viewable on the screen). I want to make sure that a user will receive a warning message that they are about to overwrite the appointment that they are making.
This should be in a function or module that can be called from withing the program.
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Program is written in vb6 and uses mdac.