DDE - server program message checksΒΆ
DDE client messages are queued by the operating system, and sent to the server when the server program makes a check for pending messages.
While executing non-interactive commands, Sculptor checks for messages at a frequency controlled by the Sculptor system variable sys.AutoEventCheck, which may be assigned any value from 0-255. Assigning 0 to sys.AutoEventCheck turns event checking off. A non-zero value represents the approximate number of statements to be executed between checks. The default value for sys.AutoEventCheck is 50. Setting a very low value may impair performance.
If a Sculptor program is awaiting input in an interactive command such as dialog or prompt, it loops to check for messages.
The command checkevents causes an immediate check for messages every time it is executed.
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