Fix Minimize to the tray instead of the taskbar

src/qt/bitcoingui.cpp

@@ -56,6 +56,7 @@ BitcoinGUI::BitcoinGUI(QWidget *parent):
     QMainWindow(parent),
     clientModel(0),
     walletModel(0),
+    dummyWidget(0),
     encryptWalletAction(0),
     changePassphraseAction(0),
     aboutQtAction(0),
@@ -85,6 +86,9 @@ BitcoinGUI::BitcoinGUI(QWidget *parent):
     // Create the tray icon (or setup the dock icon)
     createTrayIcon();
 
+    // Dummy widget used when restoring window state after minimization
+    dummyWidget = new QWidget();
+
     // Create tabs
     overviewPage = new OverviewPage();
 
@@ -162,6 +166,7 @@ BitcoinGUI::~BitcoinGUI()
 #ifdef Q_WS_MAC
     delete appMenuBar;
 #endif
+    delete dummyWidget;
 }
 
 void BitcoinGUI::createActions()
@@ -205,17 +210,17 @@ void BitcoinGUI::createActions()
 #endif
     tabGroup->addAction(messageAction);
 
-    connect(overviewAction, SIGNAL(triggered()), this, SLOT(show()));
+    connect(overviewAction, SIGNAL(triggered()), this, SLOT(showNormal()));
     connect(overviewAction, SIGNAL(triggered()), this, SLOT(gotoOverviewPage()));
-    connect(historyAction, SIGNAL(triggered()), this, SLOT(show()));
+    connect(historyAction, SIGNAL(triggered()), this, SLOT(showNormal()));
     connect(historyAction, SIGNAL(triggered()), this, SLOT(gotoHistoryPage()));
-    connect(addressBookAction, SIGNAL(triggered()), this, SLOT(show()));
+    connect(addressBookAction, SIGNAL(triggered()), this, SLOT(showNormal()));
     connect(addressBookAction, SIGNAL(triggered()), this, SLOT(gotoAddressBookPage()));
-    connect(receiveCoinsAction, SIGNAL(triggered()), this, SLOT(show()));
+    connect(receiveCoinsAction, SIGNAL(triggered()), this, SLOT(showNormal()));
     connect(receiveCoinsAction, SIGNAL(triggered()), this, SLOT(gotoReceiveCoinsPage()));
-    connect(sendCoinsAction, SIGNAL(triggered()), this, SLOT(show()));
+    connect(sendCoinsAction, SIGNAL(triggered()), this, SLOT(showNormal()));
     connect(sendCoinsAction, SIGNAL(triggered()), this, SLOT(gotoSendCoinsPage()));
-    connect(messageAction, SIGNAL(triggered()), this, SLOT(show()));
+    connect(messageAction, SIGNAL(triggered()), this, SLOT(showNormal()));
     connect(messageAction, SIGNAL(triggered()), this, SLOT(gotoMessagePage()));
 
     quitAction = new QAction(QIcon(":/icons/quit"), tr("E&xit"), this);
@@ -405,10 +410,17 @@ void BitcoinGUI::trayIconActivated(QSystemTrayIcon::ActivationReason reason)
         // Click on system tray icon triggers "open bitcoin"
         openBitcoinAction->trigger();
     }
-
 }
 #endif
 
+void BitcoinGUI::showNormal()
+{
+    // Reparent window to the desktop (in case it was hidden on minimize)
+    if(parent() != NULL)
+        setParent(NULL, Qt::Window);
+    QMainWindow::showNormal();
+}
+
 void BitcoinGUI::optionsClicked()
 {
     if(!clientModel || !clientModel->getOptionsModel())
@@ -550,13 +562,13 @@ void BitcoinGUI::changeEvent(QEvent *e)
         {
             if(isMinimized())
             {
-                hide();
-                e->ignore();
+                // Hiding the window from taskbar
+                setParent(dummyWidget, Qt::SubWindow);
+                return;
             }
             else
             {
-                show();
-                e->accept();
+                showNormal();
             }
         }
     }

src/qt/bitcoingui.h

@@ -58,6 +58,8 @@ private:
 
     QStackedWidget *centralWidget;
 
+    QWidget *dummyWidget;
+
     OverviewPage *overviewPage;
     QWidget *transactionsPage;
     AddressBookPage *addressBookPage;
@@ -131,6 +133,8 @@ public slots:
     void gotoMessagePage();
     void gotoMessagePage(QString);
 
+    void showNormal();
+
 private slots:
     /** Switch to overview (home) page */
     void gotoOverviewPage();