Fixed dynamic channel tab allocation so that no tab is created statically in the UI

sdrbase/mainwindow.cpp

@@ -29,6 +29,7 @@
 #include "gui/preferencesdialog.h"
 #include "gui/aboutdialog.h"
 #include "gui/rollupwidget.h"
+#include "gui/channelwindow.h"
 #include "dsp/dspengine.h"
 #include "dsp/spectrumvis.h"
 #include "dsp/filesink.h"
@@ -115,7 +116,6 @@ MainWindow::MainWindow(QWidget* parent) :
 	ui->tabSpectraGUI->addTab(m_deviceUIs.back()->m_spectrumGUI, "X0");
 	m_dspEngine->addSink(m_deviceUIs.back()->m_spectrumVis);
 	ui->tabChannels->addTab(m_deviceUIs.back()->m_channelWindow, "X0");
-	ui->tabChannels->removeTab(0);
 	bool sampleSourceSignalsBlocked = m_deviceUIs.back()->m_sampleSource->blockSignals(true);
 	m_pluginManager->fillSampleSourceSelector(m_deviceUIs.back()->m_sampleSource);
 	m_deviceUIs.back()->m_sampleSource->blockSignals(sampleSourceSignalsBlocked);

sdrbase/mainwindow.ui

@@ -409,21 +409,8 @@
      <item>
       <widget class="QTabWidget" name="tabChannels">
        <property name="currentIndex">
-        <number>0</number>
+        <number>-1</number>
        </property>
-       <widget class="ChannelWindow" name="rxChannels">
-        <property name="enabled">
-         <bool>false</bool>
-        </property>
-        <property name="font">
-         <font>
-          <pointsize>8</pointsize>
-         </font>
-        </property>
-        <attribute name="title">
-         <string>Rx</string>
-        </attribute>
-       </widget>
       </widget>
      </item>
     </layout>
@@ -510,14 +497,6 @@
   <zorder>channelDock</zorder>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
- <customwidgets>
-  <customwidget>
-   <class>ChannelWindow</class>
-   <extends>QWidget</extends>
-   <header>gui/channelwindow.h</header>
-   <container>1</container>
-  </customwidget>
- </customwidgets>
  <tabstops>
   <tabstop>presetTree</tabstop>
   <tabstop>presetSave</tabstop>