Make a message dialog. One can control the caption, message, and buttons in the dialog. The return value is the button
selected, starting with 0 (e.g., if it = 0 and the Retry button is selected, then i = 1).
- Returns:
 
i - button selected
 
- Arguments:
 
s1 - caption of the interactive dialog
s2 - message in the interactive dialog
it - integer indicating the buttons with the following options:
0 = Abort, Retry, Ignore
 
1 = OK
 
2 = OK, Cancel
 
3 = Retry, Cancel
 
4 = Yes, No
 
5 = Yes, No, Cancel