If possible, ask the user a question. If not, falls back to ThreadSafeMessageBox(noninteractive_message, style) and returns false.

Synopsis

Declared in <node/interface_ui.h>

btcsignals::signal<bool(xref:bilingual_str.adoc[bilingual_str const&, std::string const&, unsigned int), btcsignals::any_of>] ThreadSafeQuestion;

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