From e39c9cff1a626ee038a541258d6e271ce63969a9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Barbosa?= <joao.paulo.barbosa@gmail.com>
Date: Sat, 12 Oct 2019 22:26:47 +0100
Subject: gui: Fix start timer from non QThread

Github-Pull: #17120
Rebased-From: a8f5026d6d992fd8d72908c848c5028f0f9a8cd1
Tree-SHA512: 5f8cbfd5044d2c0df7dbfc54e7d94f93da96d0adecd23007e82acc38bc3c7984a685c9596cbd449f559cf42db9e1b99612765328004c5a45655a8e375482a8a8
---
 src/qt/walletcontroller.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/qt/walletcontroller.cpp')

diff --git a/src/qt/walletcontroller.cpp b/src/qt/walletcontroller.cpp
index fa6f9f3f16..a8de5392b4 100644
--- a/src/qt/walletcontroller.cpp
+++ b/src/qt/walletcontroller.cpp
@@ -108,6 +108,12 @@ WalletModel* WalletController::getOrCreateWallet(std::unique_ptr<interfaces::Wal
     wallet_model->setParent(this);
     m_wallets.push_back(wallet_model);
 
+    // WalletModel::startPollBalance needs to be called in a thread managed by
+    // Qt because of startTimer. Considering the current thread can be a RPC
+    // thread, better delegate the calling to Qt with Qt::AutoConnection.
+    const bool called = QMetaObject::invokeMethod(wallet_model, "startPollBalance");
+    assert(called);
+
     connect(wallet_model, &WalletModel::unload, [this, wallet_model] {
         // Defer removeAndDeleteWallet when no modal widget is active.
         // TODO: remove this workaround by removing usage of QDiallog::exec.
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