chatgui: add SetConsoleCtrlHandler for reliable Ctrl-C on Windows

tools/chatgui/src/main.cpp

@@ -3,10 +3,25 @@
 #include <QStyleFactory>
 #include <QDir>
 #include <cstdio>
+#ifdef _WIN32
+#include <windows.h>
+#endif
 #include "mainwindow.h"
 #include "../db/db_manager.h"
 #include "../transport/node_config.h"
 
+#ifdef _WIN32
+extern "C" void utun_node_signal_shutdown(void);
+
+static BOOL WINAPI console_ctrl_handler(DWORD dwCtrlType) {
+    if (dwCtrlType == CTRL_C_EVENT || dwCtrlType == CTRL_BREAK_EVENT) {
+        utun_node_signal_shutdown();
+        return TRUE;
+    }
+    return FALSE;
+}
+#endif
+
 int main(int argc, char *argv[]) {
     QApplication app(argc, argv);
     app.setApplicationName("Chat");
@@ -76,5 +91,9 @@ int main(int argc, char *argv[]) {
                  cfg.debugLevel(), cfg.debugCategories());
     w.show();
 
+#ifdef _WIN32
+    SetConsoleCtrlHandler(console_ctrl_handler, TRUE);
+#endif
+
     return app.exec();
 }

tools/chatgui/transport/utun_node.cpp

@@ -44,6 +44,11 @@ static void signal_handler(int sig) {
     if (g_signal_ua) uasync_wakeup(g_signal_ua);
 }
 
+extern "C" void utun_node_signal_shutdown(void) {
+    g_shutdown = 1;
+    if (g_signal_ua) uasync_wakeup(g_signal_ua);
+}
+
 UtunNode::UtunNode(QObject* parent) : QObject(parent) {}
 
 UtunNode::~UtunNode() {