...

7 files changed, 108 insertions, 92 deletions

diff --git a/i18n/server/pvsmgr_ar_JO.ts b/i18n/server/pvsmgr_ar_JO.ts
index a897589..19ae5ef 100644
--- a/i18n/server/pvsmgr_ar_JO.ts
+++ b/i18n/server/pvsmgr_ar_JO.ts
@@ -15,48 +15,48 @@
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="442"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="470"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="475"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="480"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="507"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="535"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="540"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="545"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="453"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="481"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="486"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="491"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="518"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="546"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="551"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="556"/>
         <source>Projection</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="443"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="471"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="536"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="454"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="482"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="547"/>
         <source>No projection source selected.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="476"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="508"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="541"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="487"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="519"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="552"/>
         <source>No tutor defined, or tutor is offline.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="481"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="492"/>
         <source>Selected projection target is tutor.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="546"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="557"/>
         <source>Selected projection source is tutor.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="757"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="770"/>
         <source>Projection Error</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="758"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="771"/>
         <source>Could not send screen contents of %1 to other clients: VNC Startup failed.</source>
         <translation type="unfinished"></translation>
     </message>
diff --git a/i18n/server/pvsmgr_de_DE.ts b/i18n/server/pvsmgr_de_DE.ts
index 326374f..216f223 100644
--- a/i18n/server/pvsmgr_de_DE.ts
+++ b/i18n/server/pvsmgr_de_DE.ts
@@ -68,48 +68,48 @@
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="442"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="470"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="475"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="480"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="507"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="535"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="540"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="545"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="453"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="481"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="486"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="491"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="518"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="546"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="551"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="556"/>
         <source>Projection</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="443"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="471"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="536"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="454"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="482"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="547"/>
         <source>No projection source selected.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="476"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="508"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="541"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="487"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="519"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="552"/>
         <source>No tutor defined, or tutor is offline.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="481"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="492"/>
         <source>Selected projection target is tutor.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="546"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="557"/>
         <source>Selected projection source is tutor.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="757"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="770"/>
         <source>Projection Error</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="758"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="771"/>
         <source>Could not send screen contents of %1 to other clients: VNC Startup failed.</source>
         <translation type="unfinished"></translation>
     </message>
diff --git a/i18n/server/pvsmgr_es_MX.ts b/i18n/server/pvsmgr_es_MX.ts
index 09b67f8..69a7c0d 100644
--- a/i18n/server/pvsmgr_es_MX.ts
+++ b/i18n/server/pvsmgr_es_MX.ts
@@ -271,48 +271,48 @@ Perform an unprojection or remove remote help to get a target.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="442"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="470"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="475"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="480"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="507"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="535"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="540"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="545"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="453"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="481"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="486"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="491"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="518"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="546"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="551"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="556"/>
         <source>Projection</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="443"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="471"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="536"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="454"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="482"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="547"/>
         <source>No projection source selected.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="476"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="508"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="541"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="487"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="519"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="552"/>
         <source>No tutor defined, or tutor is offline.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="481"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="492"/>
         <source>Selected projection target is tutor.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="546"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="557"/>
         <source>Selected projection source is tutor.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="757"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="770"/>
         <source>Projection Error</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="758"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="771"/>
         <source>Could not send screen contents of %1 to other clients: VNC Startup failed.</source>
         <translation type="unfinished"></translation>
     </message>
diff --git a/i18n/server/pvsmgr_fr_FR.ts b/i18n/server/pvsmgr_fr_FR.ts
index a897589..19ae5ef 100644
--- a/i18n/server/pvsmgr_fr_FR.ts
+++ b/i18n/server/pvsmgr_fr_FR.ts
@@ -15,48 +15,48 @@
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="442"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="470"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="475"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="480"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="507"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="535"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="540"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="545"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="453"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="481"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="486"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="491"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="518"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="546"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="551"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="556"/>
         <source>Projection</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="443"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="471"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="536"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="454"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="482"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="547"/>
         <source>No projection source selected.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="476"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="508"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="541"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="487"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="519"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="552"/>
         <source>No tutor defined, or tutor is offline.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="481"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="492"/>
         <source>Selected projection target is tutor.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="546"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="557"/>
         <source>Selected projection source is tutor.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="757"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="770"/>
         <source>Projection Error</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="758"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="771"/>
         <source>Could not send screen contents of %1 to other clients: VNC Startup failed.</source>
         <translation type="unfinished"></translation>
     </message>
diff --git a/i18n/server/pvsmgr_pl_PL.ts b/i18n/server/pvsmgr_pl_PL.ts
index a897589..19ae5ef 100644
--- a/i18n/server/pvsmgr_pl_PL.ts
+++ b/i18n/server/pvsmgr_pl_PL.ts
@@ -15,48 +15,48 @@
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="442"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="470"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="475"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="480"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="507"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="535"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="540"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="545"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="453"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="481"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="486"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="491"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="518"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="546"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="551"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="556"/>
         <source>Projection</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="443"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="471"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="536"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="454"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="482"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="547"/>
         <source>No projection source selected.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="476"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="508"/>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="541"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="487"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="519"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="552"/>
         <source>No tutor defined, or tutor is offline.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="481"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="492"/>
         <source>Selected projection target is tutor.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="546"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="557"/>
         <source>Selected projection source is tutor.</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="757"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="770"/>
         <source>Projection Error</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="758"/>
+        <location filename="../../src/server/mainwindow/mainwindow.cpp" line="771"/>
         <source>Could not send screen contents of %1 to other clients: VNC Startup failed.</source>
         <translation type="unfinished"></translation>
     </message>
diff --git a/src/server/mainwindow/mainwindow.cpp b/src/server/mainwindow/mainwindow.cpp
index 9e89baa..0441f1d 100644
--- a/src/server/mainwindow/mainwindow.cpp
+++ b/src/server/mainwindow/mainwindow.cpp
@@ -353,6 +353,17 @@ void MainWindow::onButtonChat()
 	 */
 }
 
+bool MainWindow::isValidClient(Client* client)
+{
+	for (QList<ConnectionFrame*>::iterator it(_clientFrames.begin()); it != _clientFrames.end(); ++it)
+	{
+		Client *c = (**it).client();
+		if (c == client)
+			return true;
+	}
+	return false;
+}
+
 void MainWindow::prepareForProjection(Client * const from, Client * const to)
 {
 	// Projection source is never allowed to be an active VNC viewer
@@ -576,7 +587,6 @@ void MainWindow::onClientConnected(Client* client)
 	qDebug("ListenServer told MainWindow about new connection");
 	connect(client, SIGNAL(authenticating(Client*, ClientLogin*)), this, SLOT(onClientAuthenticating(Client*, ClientLogin*)));
 	connect(client, SIGNAL(authenticated(Client*)), this, SLOT(onClientAuthenticated(Client*)));
-	connect(client, SIGNAL(vncClientStateChange(Client*)), this, SLOT(onVncClientStateChange(Client*)));
 }
 
 void MainWindow::onClientAuthenticating(Client* client, ClientLogin* request)
@@ -619,7 +629,8 @@ void MainWindow::onClientAuthenticating(Client* client, ClientLogin* request)
 void MainWindow::onClientAuthenticated(Client* client)
 {
 	disconnect(client, SIGNAL(authenticated(Client*)), this, SLOT(onClientAuthenticated(Client*)));
-	connect(client, SIGNAL(vncServerStateChange(Client*)), this, SLOT(onVncServerStateChange(Client*)));
+	connect(client, SIGNAL(vncServerStateChange(Client*)), this, SLOT(onVncServerStateChange(Client*)), Qt::QueuedConnection);
+	connect(client, SIGNAL(vncClientStateChange(Client*)), this, SLOT(onVncClientStateChange(Client*)), Qt::QueuedConnection);
 	bool hasActiveTutor = false;
 	ConnectionFrame *deadTutor = NULL;
 	bool anyClient = false;
@@ -711,6 +722,8 @@ void MainWindow::onClientAuthenticated(Client* client)
 
 void MainWindow::onVncServerStateChange(Client* client)
 {
+	if (!isValidClient(client)) // Check here because this slot is connected queued
+		return;
 	if (client->vncPort() > 0)
 	{
 		// VNC Server started on some client - start projection on all clients interested in that client's screen
@@ -763,6 +776,8 @@ void MainWindow::onVncServerStateChange(Client* client)
 
 void MainWindow::onVncClientStateChange(Client* client)
 {
+	if (!isValidClient(client)) // Check here because this slot is connected queued
+		return;
 	// If the client started projection, ignore event. Also if
 	// the source is not known (anymore), we cannot do anything meaningful here
 	if (client->isActiveVncClient() || client->currentProjectionSource() == 0)
diff --git a/src/server/mainwindow/mainwindow.h b/src/server/mainwindow/mainwindow.h
index 5905cf5..4ff41dc 100644
--- a/src/server/mainwindow/mainwindow.h
+++ b/src/server/mainwindow/mainwindow.h
@@ -39,6 +39,7 @@ private:
     bool loadPosition(QSettings& settings, const QString& id, int& x, int& y);
     void savePosition(ConnectionFrame *cf);
     void prepareForProjection(Client * const from, Client * const to);
+    bool isValidClient(Client* client);
 
 public:
     MainWindow(QWidget *parent = 0);