Fixed exception call in QTitleBar constructor

Imported proper dependencies and replaced "std::exception" call by "std::invalid argument" (otherwise it would only work with MSVC compiler).

Author: mauromascarenhas

sample/CustomFrame-Dynamic/customtitlebar/qtitlebar.h

@@ -4,7 +4,7 @@
 # Developer: Mauro Mascarenhas de Araújo
 # Contact: mauro.mascarenhas@nintersoft.com
 # Licence: Mozilla Public Licence 2.0
-# Date: 24 of August of 2020
+# Date: 25 of August of 2020
 #
 # Licence notice
 #
@@ -38,7 +38,7 @@
 #include <QPushButton>
 #include <QStyleOption>
 
-#include <exception>
+#include <stdexcept>
 
 namespace QCustomAttrs {
     enum WindowButton {

sample/CustomFrame-Static/customtitlebar/qtitlebar.cpp

@@ -45,7 +45,7 @@ QTitleBar::QTitleBar(QMainWindow *parent) :
         "QTitleBar { background: white; }\n"
     ));
 
-    if (!parent) throw std::exception("Parent must be a QCustomWindow object (cannot be null).");
+    if (!parent) throw std::invalid_argument("Parent must be a QCustomWindow object (cannot be null).");
     this->m_parentWindow = parent;
 
     this->lbl_windowTitle.setText("QCustomWindow");

sample/CustomFrame-Static/customtitlebar/qtitlebar.h

@@ -30,7 +30,7 @@
 #include <QPushButton>
 #include <QStyleOption>
 
-#include <exception>
+#include <stdexcept>
 
 namespace QCustomAttrs {
     enum WindowButton {

src/CustomTitlebar-Dynamic/qtitlebar.cpp

@@ -45,7 +45,7 @@ QTitleBar::QTitleBar(QMainWindow *parent) :
         "QTitleBar { background: white; }\n"
     ));
 
-    if (!parent) throw std::exception("Parent must be a QCustomWindow object (cannot be null).");
+    if (!parent) throw std::invalid_argument("Parent must be a QCustomWindow object (cannot be null).");
     this->m_parentWindow = parent;
 
     this->lbl_windowTitle.setText("QCustomWindow");

src/CustomTitlebar-Dynamic/qtitlebar.h

@@ -38,7 +38,7 @@
 #include <QPushButton>
 #include <QStyleOption>
 
-#include <exception>
+#include <stdexcept>
 
 namespace QCustomAttrs {
     enum WindowButton {

src/CustomTitlebar-Static/qtitlebar.cpp

@@ -45,7 +45,7 @@ QTitleBar::QTitleBar(QMainWindow *parent) :
         "QTitleBar { background: white; }\n"
     ));
 
-    if (!parent) throw std::exception("Parent must be a QCustomWindow object (cannot be null).");
+    if (!parent) throw std::invalid_argument("Parent must be a QCustomWindow object (cannot be null).");
     this->m_parentWindow = parent;
 
     this->lbl_windowTitle.setText("QCustomWindow");

src/CustomTitlebar-Static/qtitlebar.h

@@ -30,7 +30,7 @@
 #include <QPushButton>
 #include <QStyleOption>
 
-#include <exception>
+#include <stdexcept>
 
 namespace QCustomAttrs {
     enum WindowButton {