i8degrees · July 21, 2025 06:11 · Jul 21, 2025
diff --git a/app.cpp b/app.cpp
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2023 - 2024 Vadym Hrynchyshyn <[email protected]>
+ */
+
+#include "app.h"
+#include "utils.h"
+#include "wusbip.h"
+
+#include <libusbip/src/file_ver.h>
+
+using namespace usbip;
+
+App::App()
+{
+        Bind(wxEVT_END_SESSION, &App::on_end_session, this);
+}
+
+bool App::OnInit()
+{
+	/* wxString app_instance = */
+	auto app_instance = wxString::Format(wxT("my_app_instance_%s"), 			
+		wxGetUserId().c_str());
+
+	// 1. https://docs.wxwidgets.org/3.0/classwx_single_instance_checker.html#
+        m_checker = new wxSingleInstanceChecker(app_instance);
+        if (m_checker->IsAnotherRunning()) {
+            wxLogError(wxT("Another instance is already running."));
+            return false; // Don't start a new instance
+        }
+
+        if (wxApp::OnInit()) {
+                set_names();
+        } else {
+                return false;
+        }
+
+        wxString err;
+
+        if (auto read = init(err) ? vhci::open() : Handle()) {
+                if (auto &frame = *new MainFrame(std::move(read)); frame.start_in_tray()) {
+                        frame.iconize_to_tray();
+                } else {
+                        frame.Show();
+                }
+                return true;
+        }
+
+        if (err.empty()) {
+                err = GetLastErrorMsg();
+        }
+
+        wxSafeShowMessage(_("Fatal error"), err);
+        return false;
+}
+
+void App::set_names()
+{
+        auto &v = win::get_file_version();
+
+
+        SetAppName(wx_string(v.GetProductName()));
+        SetVendorName(wx_string(v.GetCompanyName()));
+}
+
+/*
+ * wxEVT_CLOSE_WINDOW will not be sent to MainFrame, but m_read_thread must be joined.
+ * @see MainFrame::on_close
+ */
+void App::on_end_session(_In_ wxCloseEvent&)
+{
+        if (auto wnd = GetMainTopWindow()) {
+                wnd->Close(true);
+        }
+}
+
+bool App::OnExit()
+{
+	delete m_checker;
+	return false; // 0
+} 
+
+wxIMPLEMENT_APP(App);
diff --git a/app.h b/app.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2023 - 2024 Vadym Hrynchyshyn <[email protected]>
+ */
+
+#pragma once
+
+#include <wx/app.h>
+#include <wx/singleinst.h>
+#include <wx/log.h>
+
+
+class App : public wxApp
+{
+public:
+        App();
+        bool OnInit() override;
+	// 1. https://docs.wxwidgets.org/3.0/classwx_single_instance_checker.html#
+        bool OnExit() override;
+
+private:
+        void set_names();
+        void on_end_session(_In_ wxCloseEvent &event);
+	// 1. https://docs.wxwidgets.org/3.0/classwx_single_instance_checker.html#
+	wxSingleInstanceChecker *m_checker;
+};
+
+wxDECLARE_APP(App);