1 files changed, 32 insertions, 25 deletions

diff --git a/src/plugins/platforms/windows/qwindowsglcontext.cpp b/src/plugins/platforms/windows/qwindowsglcontext.cpp
index 65b3e7f430..1f49f0aefd 100644
--- a/src/plugins/platforms/windows/qwindowsglcontext.cpp
+++ b/src/plugins/platforms/windows/qwindowsglcontext.cpp
@@ -1,12 +1,11 @@
 /****************************************************************************
 **
-** Copyright (C) 2021 The Qt Company Ltd.
+** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the plugins of the Qt Toolkit.
 **
-** $QT_BEGIN_LICENSE:COMM$
-**
+** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
 ** Licensees holding valid commercial Qt licenses may use this file in
 ** accordance with the commercial license agreement provided with the
@@ -15,25 +14,26 @@
 ** and conditions see https://www.qt.io/terms-conditions. For further
 ** information use the contact form at https://www.qt.io/contact-us.
 **
-** $QT_END_LICENSE$
-**
-**
-**
-**
-**
-**
-**
-**
-**
-**
-**
-**
-**
-**
-**
-**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
 **
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
 **
+** $QT_END_LICENSE$
 **
 ****************************************************************************/
 
@@ -48,6 +48,7 @@
 #include <qpa/qplatformnativeinterface.h>
 #include <QtPlatformHeaders/qwglnativecontext.h>
 
+#include <private/qsystemlibrary_p.h>
 #include <algorithm>
 
 #include <wingdi.h>
@@ -162,19 +163,25 @@ QFunctionPointer QWindowsOpengl32DLL::resolve(const char *name)
 
 bool QWindowsOpengl32DLL::init(bool softwareRendering)
 {
-    const QByteArray opengl32 = QByteArrayLiteral("opengl32.dll");
-    const QByteArray swopengl = QByteArrayLiteral("opengl32sw.dll");
+    const QByteArray opengl32 = QByteArrayLiteral("opengl32");
+    const QByteArray swopengl = QByteArrayLiteral("opengl32sw");
+    bool useSystemLib = false;
 
     QByteArray openglDll = qgetenv("QT_OPENGL_DLL");
-    if (openglDll.isEmpty())
+    if (openglDll.isEmpty()) {
         openglDll = softwareRendering ? swopengl : opengl32;
+        useSystemLib = !softwareRendering;
+    }
 
     openglDll = openglDll.toLower();
     m_nonOpengl32 = openglDll != opengl32;
 
     qCDebug(lcQpaGl) << "Qt: Using WGL and OpenGL from" << openglDll;
 
-    m_lib = ::LoadLibraryA(openglDll.constData());
+    if (useSystemLib)
+        m_lib = QSystemLibrary::load((wchar_t*)(QString::fromLatin1(openglDll).utf16()));
+    else
+        m_lib = LoadLibraryA(openglDll.constData());
     if (!m_lib) {
         qErrnoWarning(::GetLastError(), "Failed to load %s", openglDll.constData());
         return false;
@@ -184,7 +191,7 @@ bool QWindowsOpengl32DLL::init(bool softwareRendering)
         // Load opengl32.dll always. GDI functions like ChoosePixelFormat do
         // GetModuleHandle for opengl32.dll and behave differently (and call back into
         // opengl32) when the module is present. This is fine for dummy contexts and windows.
-        ::LoadLibraryA("opengl32.dll");
+        QSystemLibrary::load(L"opengl32");
     }
 
     wglCreateContext = reinterpret_cast<HGLRC (WINAPI *)(HDC)>(resolve("wglCreateContext"));