Device GUIs: Constain window size via minimumSize/maximumSize, rather than handling resizeEvent. Add maximum button. Hide size buttons when window size is fixed

plugins/samplesource/fcdproplus/fcdproplusgui.cpp

@@ -18,7 +18,6 @@
 #include <QDebug>
 #include <QMessageBox>
 #include <QFileDialog>
-#include <QResizeEvent>
 
 #include "ui_fcdproplusgui.h"
 #include "gui/colormapper.h"
@@ -46,7 +45,7 @@ FCDProPlusGui::FCDProPlusGui(DeviceUISet *deviceUISet, QWidget* parent) :
     m_sampleSource = (FCDProPlusInput*) m_deviceUISet->m_deviceAPI->getSampleSource();
 
     ui->setupUi(getContents());
-    setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
+    sizeToContents();
     getContents()->setStyleSheet("#FCDProPlusGui { background-color: rgb(64, 64, 64); }");
     m_helpURL = "plugins/samplesource/fcdproplus/readme.md";
 
@@ -119,12 +118,6 @@ bool FCDProPlusGui::deserialize(const QByteArray& data)
 	}
 }
 
-void FCDProPlusGui::resizeEvent(QResizeEvent* size)
-{
-    adjustSize();
-    size->accept();
-}
-
 bool FCDProPlusGui::handleMessage(const Message& message)
 {
     if (FCDProPlusInput::MsgConfigureFCDProPlus::match(message))

plugins/samplesource/fcdproplus/fcdproplusgui.h

@@ -69,9 +69,6 @@ private:
 	bool handleMessage(const Message& message);
     void makeUIConnections();
 
-protected:
-    void resizeEvent(QResizeEvent* size);
-
 private slots:
     void handleInputMessages();
 	void on_centerFrequency_changed(quint64 value);