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IMessageFilter::RetryRejectedCall
Gives the application an opportunity to display a dialog box so the user can
retry or cancel the call, or switch to the task identified by threadIDCallee.
DWORD RetryRejectedCall(
HTASK threadIDCallee,
| //Server task handle
| DWORD dwTickCount,
| //Elapsed tick count
| DWORD dwRejectType
| //Returned rejection message
| );
|
|
Parameters
threadIDCallee
[in] Specifies the handle of the server task that rejected the call.
dwTickCount
[in] Specifies the number of elapsed ticks since the call was made.
dwRejectType
[in] Specifies either SERVERCALL_REJECTED or SERVERCALL_RETRYLATER, as
returned by the object application.
Return Values
-1
The call should be canceled. OLE then returns RPC_E_CALL_REJECTED from the
original method call.
Value >= 0 and <100
The call is to be retried immediately.
Value >= 100
OLE will wait for this many milliseconds and then retry the call.
Comments
OLE calls RetryRejectedCall immediately after receiving SERVERCALL_RETRYLATER or SERVERCALL_REJECTED from IMessageFilter::HandleInComingCall.
If an application task rejects a call, the application is probably in a state
where it cannot handle such calls, possibly only temporarily. When this occurs,
OLE calls IMessageFilter::RetryRejectedCall.
Applications should silently retry calls that have returned with
SERVERCALL_RETRYLATER and show a dialog box only after a reasonable amount of time has
passed, say about five seconds. The callee may momentarily be in a state where calls
can be handled. The option to wait and retry is provided for special kinds of
calling applications, such as background tasks executing macros or scripts, so
that they can retry the calls in a nonintrusive way.
If, after a dialog box is displayed, the user chooses to cancel, the call will
appear to fail with RPC_E_CALL_REJECTED.
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