Merge with develop

--HG--
branch : compatibility-develop

code/nel/src/misc/system_utils.cpp

@@ -76,12 +76,21 @@ namespace NLMISC {
 
 nlWindow CSystemUtils::s_window = EmptyWindow;
 
+#ifdef NL_OS_WINDOWS
+static bool s_mustUninit = false;
+#endif
+
 bool CSystemUtils::init()
 {
 #ifdef NL_OS_WINDOWS
 	// initialize COM
+	if (!s_mustUninit)
+	{
 		HRESULT hr = CoInitializeEx(NULL, COINIT_MULTITHREADED);
 		if (FAILED(hr)) return false;
+
+		s_mustUninit = true;
+	}
 #endif
 
 	return true;
@@ -91,7 +100,12 @@ bool CSystemUtils::uninit()
 {
 #ifdef NL_OS_WINDOWS
 	// uninitialize COM
+	if (s_mustUninit)
+	{
 		CoUninitialize();
+
+		s_mustUninit = false;
+	}
 #endif
 
 	return true;

code/ryzom/tools/client/ryzom_installer/src/main.cpp

@@ -80,6 +80,26 @@ bool copyInstallerFiles(const QStringList &files, const QString &destination)
 	return true;
 }
 
+#ifdef Q_OS_WIN
+class CCOMHelper
+{
+	bool m_mustUninit;
+
+public:
+	CCOMHelper()
+	{
+		// to fix the bug with QFileDialog::getExistingDirectory hanging under Windows
+		m_mustUninit = SUCCEEDED(CoInitialize(NULL));
+	}
+
+	~CCOMHelper()
+	{
+		// only call CoUninitialize if CoInitialize succeeded
+		if (m_mustUninit) CoUninitialize();
+	}
+};
+#endif
+
 int main(int argc, char *argv[])
 {
 #if defined(_MSC_VER) && defined(_DEBUG)
@@ -87,8 +107,7 @@ int main(int argc, char *argv[])
 #endif
 
 #ifdef Q_OS_WIN
-	// to fix the bug with QFileDialog::getExistingDirectory hanging under Windows
-	CoInitialize(NULL);
+	CCOMHelper comHelper;
 #endif
 
 	NLMISC::CApplicationContext appContext;