Triggering PowerBuilder events in JavaScript
You can define PowerBuilder user events for WebBrowser and then
trigger the event in JavaScript.
The PowerBuilder user event to be registered should be defined as
follows.
|
1 |
event type string eventName(string as_arg); |
User events can be defined with one string-type parameter and
string-type return value (code
example) or no parameters.
User events must be registered by RegisterEvent function before they
can be triggered in JavaScript.
After a PowerBuilder user event is registered successfully, it can
be triggered by JavaScript on Web in the following ways (assuming the
name of the registered event is TestPBEvent)
-
Syntax 1: trigger the user event synchronously and return a
string1webBrowser.TestPBEvent ('The event is synchronously triggered by JavaScript') -
Syntax 2: trigger the user event asynchronously and return a
JavaScript Promise object.1webBrowser.asyncfun.prototype.TestPBEvent ('The event is asynchronously triggered by JavaScript')
Note
In the registered PowerBuilder user event, only the asynchronous
function EvaluateJavascriptAsync can be called; it is not allowed to
call any other WebBrowser functions.