RAD Studio 11 Alexandria Message Filter Does Not Suppress Duplicate Warning Pop‑ups

Short answer

No — in RAD Studio 11 Alexandria there is no built-in setting that makes the global Show Notifications toggle respect the per-severity filter in Tools → Options → Environment → Messages, and the IDE does not deduplicate repeated warnings before they reach the notification pipeline. If you want the pop-ups gone, you either disable Show Notifications entirely or stop the duplicate warnings from being emitted in the first place.

What is confirmed vs. what is assumed

The confirmed behavior: the Messages options page filters what appears in the Message View. It is a view filter, not a routing rule for toast notifications. The Show Notifications toggle is a single global switch — there is no documented per-severity setting that sends, say, errors to pop-ups while keeping warnings inline in the Notification Center. The Notification Center aggregates entries after they are emitted; it does not collapse N identical warnings from one source line into one, so each instance can produce its own toast.

The assumption to flag: exact option names and notification behavior are version-sensitive across 11.x point releases. Treat any claim of a hidden per-severity notification option as unverified and check the Embarcadero docwiki or Quality Portal for your exact build.

Practical options, in order of preference

1. Fix or suppress at the source. If one line emits the same warning repeatedly, suppress that specific identifier locally rather than globally. In Delphi use {$WARN SYMBOL_DEPRECATED OFF} (substitute the actual identifier) around the offending code; in C++Builder use #pragma warn with the matching warning code. If the warning never fires, no pop-up is generated. Be aware this hides the warning everywhere, not just in toasts — scope it tightly.
2. Reduce warning verbosity in Project Options if a whole class of warnings is noise for your team. Same trade-off: this affects the Message View too.
3. Disable Show Notifications entirely. This is the only built-in way to guarantee no warning toasts. The Message View and Notification Center still record everything, so nothing is lost — you just review messages inline instead of being interrupted.

How to verify on your installation

• Toggle severity filters under Tools → Options → Environment → Messages while Show Notifications is on, then rebuild a unit known to emit duplicate warnings. Observe whether toasts still appear — this confirms the filter/view split on your build.
• After such a build, open the Notification Center and check whether the repeated warnings are listed individually or aggregated.
• Apply a scoped {$WARN ... OFF} or #pragma warn suppression to one duplicated warning, rebuild, and confirm the pop-ups for that identifier stop.

One detail that would sharpen the recommendation: are the duplicates coming from the Delphi or the C++Builder toolchain? The suppression syntax and warning identifiers differ, so the exact fix depends on which compiler is emitting them.