Drag/drop enabling is configurable in the GUI.

src/gui/res/ServerConfigDialogBase.ui

@@ -491,7 +491,21 @@ Double click on a screen to edit its settings.</string>
             </property>
            </widget>
           </item>
+          <item row="4" column="0">
+           <widget class="QCheckBox" name="m_pCheckBoxIgnoreAutoConfigClient">
+            <property name="text">
+             <string>Ignore auto config clients</string>
+            </property>
+           </widget>
+          </item>
           <item row="5" column="0">
+           <widget class="QCheckBox" name="m_pCheckBoxEnableDragAndDrop">
+            <property name="text">
+             <string>Enable drag and drop file transfers</string>
+            </property>
+           </widget>
+          </item>
+          <item row="6" column="0">
            <spacer>
             <property name="orientation">
              <enum>Qt::Vertical</enum>
@@ -504,13 +518,6 @@ Double click on a screen to edit its settings.</string>
             </property>
            </spacer>
           </item>
-          <item row="4" column="0">
-           <widget class="QCheckBox" name="m_pCheckBoxIgnoreAutoConfigClient">
-            <property name="text">
-             <string>Ignore auto config clients</string>
-            </property>
-           </widget>
-          </item>
          </layout>
         </widget>
        </item>

src/gui/src/MainWindow.cpp

@@ -442,7 +442,9 @@ void MainWindow::startSynergy()
 
 #ifndef Q_OS_LINUX
 
-	args << "--enable-drag-drop";
+	if (m_ServerConfig.enableDragAndDrop()) {
+		args << "--enable-drag-drop";
+	}
 
 #endif
 

src/gui/src/ServerConfig.cpp

@@ -50,6 +50,7 @@ ServerConfig::ServerConfig(QSettings* settings, int numColumns, int numRows ,
 	m_NumRows(numRows),
 	m_ServerName(serverName),
 	m_IgnoreAutoConfigClient(false),
+	m_EnableDragAndDrop(false),
 	m_pMainWindow(mainWindow)
 {
 	Q_ASSERT(m_pSettings);
@@ -114,6 +115,7 @@ void ServerConfig::saveSettings()
 	settings().setValue("switchDoubleTap", switchDoubleTap());
 	settings().setValue("switchCornerSize", switchCornerSize());
 	settings().setValue("ignoreAutoConfigClient", ignoreAutoConfigClient());
+	settings().setValue("enableDragAndDrop", enableDragAndDrop());
 
 	writeSettings(settings(), switchCorners(), "switchCorner");
 
@@ -157,6 +159,7 @@ void ServerConfig::loadSettings()
 	setSwitchDoubleTap(settings().value("switchDoubleTap", 250).toInt());
 	setSwitchCornerSize(settings().value("switchCornerSize").toInt());
 	setIgnoreAutoConfigClient(settings().value("ignoreAutoConfigClient").toBool());
+	setEnableDragAndDrop(settings().value("enableDragAndDrop", true).toBool());
 
 	readSettings(settings(), switchCorners(), "switchCorner", false, NumSwitchCorners);
 

src/gui/src/ServerConfig.h

@@ -61,6 +61,7 @@ class ServerConfig : public BaseConfig
 		const QList<bool>& switchCorners() const { return m_SwitchCorners; }
 		const HotkeyList& hotkeys() const { return m_Hotkeys; }
 		bool ignoreAutoConfigClient() const { return m_IgnoreAutoConfigClient; }
+		bool enableDragAndDrop() const { return m_EnableDragAndDrop; }
 
 		void saveSettings();
 		void loadSettings();
@@ -88,6 +89,7 @@ class ServerConfig : public BaseConfig
 		void setSwitchCorner(int c, bool on) { m_SwitchCorners[c] = on; }
 		void setSwitchCornerSize(int val) { m_SwitchCornerSize = val; }
 		void setIgnoreAutoConfigClient(bool on) { m_IgnoreAutoConfigClient = on; }
+		void setEnableDragAndDrop(bool on) { m_EnableDragAndDrop = on; }
 		QList<bool>& switchCorners() { return m_SwitchCorners; }
 		HotkeyList& hotkeys() { return m_Hotkeys; }
 
@@ -119,6 +121,7 @@ class ServerConfig : public BaseConfig
 		HotkeyList m_Hotkeys;
 		QString m_ServerName;
 		bool m_IgnoreAutoConfigClient;
+		bool m_EnableDragAndDrop;
 		MainWindow* m_pMainWindow;
 };
 

src/gui/src/ServerConfigDialog.cpp

@@ -56,6 +56,8 @@ ServerConfigDialog::ServerConfigDialog(QWidget* parent, ServerConfig& config, co
 
 	m_pCheckBoxIgnoreAutoConfigClient->setChecked(serverConfig().ignoreAutoConfigClient());
 
+	m_pCheckBoxEnableDragAndDrop->setChecked(serverConfig().enableDragAndDrop());
+
 	foreach(const Hotkey& hotkey, serverConfig().hotkeys())
 		m_pListHotkeys->addItem(hotkey.text());
 
@@ -97,6 +99,7 @@ void ServerConfigDialog::accept()
 	serverConfig().setSwitchCorner(BaseConfig::BottomRight, m_pCheckBoxCornerBottomRight->isChecked());
 	serverConfig().setSwitchCornerSize(m_pSpinBoxSwitchCornerSize->value());
 	serverConfig().setIgnoreAutoConfigClient(m_pCheckBoxIgnoreAutoConfigClient->isChecked());
+	serverConfig().setEnableDragAndDrop(m_pCheckBoxEnableDragAndDrop->isChecked());
 
 	// now that the dialog has been accepted, copy the new server config to the original one,
 	// which is a reference to the one in MainWindow.