1 files changed, 65 insertions, 0 deletions
diff --git a/src/entrypoint/qtentrypoint_win.cpp b/src/entrypoint/qtentrypoint_win.cpp
new file mode 100644
index 0000000000..f0cf46ba3d
--- /dev/null
+++ b/src/entrypoint/qtentrypoint_win.cpp
@@ -0,0 +1,65 @@
+// Copyright (C) 2019 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <qt_windows.h>
+#include <shellapi.h>
+
+/*
+  This file contains the code in the QtEntryPoint library for Windows.
+  QtEntryPoint contains the Windows startup code and is required for
+  linking to the Qt DLL.
+
+  When a Windows application starts, the WinMain function is
+  invoked.
+*/
+
+#if defined(QT_NEEDS_QMAIN)
+int qMain(int, char **);
+#define main qMain
+#else
+extern "C" int main(int, char **);
+#endif
+
+/*
+  WinMain() - Initializes Windows and calls user's startup function main().
+  NOTE: WinMain() won't be called if the application was linked as a "console"
+  application.
+*/
+
+// Convert a wchar_t to char string, equivalent to QString::toLocal8Bit()
+// when passed CP_ACP.
+static inline char *wideToMulti(unsigned int codePage, const wchar_t *aw)
+{
+    const int required = WideCharToMultiByte(codePage, 0, aw, -1, nullptr, 0, nullptr, nullptr);
+    char *result = new char[required];
+    WideCharToMultiByte(codePage, 0, aw, -1, result, required, nullptr, nullptr);
+    return result;
+}
+
+static inline int qtEntryPoint()
+{
+    int argc = 0;
+    wchar_t **argvW = CommandLineToArgvW(GetCommandLineW(), &argc);
+    if (argvW == nullptr)
+        return -1;
+    char **argv = new char *[argc + 1];
+    for (int i = 0; i != argc; ++i)
+        argv[i] = wideToMulti(CP_ACP, argvW[i]);
+    argv[argc] = nullptr;
+    LocalFree(argvW);
+    const int exitCode = main(argc, argv);
+    for (int i = 0; (i != argc) && (argv[i] != nullptr); ++i)
+        delete [] argv[i];
+    delete [] argv;
+    return exitCode;
+}
+
+extern "C" int WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int)
+{
+    return qtEntryPoint();
+}
+
+extern "C" int WINAPI wWinMain(HINSTANCE, HINSTANCE, LPWSTR, int)
+{
+    return qtEntryPoint();
+}