first-application steps modified

doc/tutorials/03-writing-your-first-application.asciidoc

@@ -10,7 +10,7 @@ layout: docs
 
 === Building the QSkinny repository
 
-In this chapter we will write a simple QSkinny application on Linux from scratch.
+In this chapter we will write a simple QSkinny application on Linux from scratch in C++.
 As a prerequisite, a recent Qt version (>= 5.15) should be available. On debian bullseye we need to install
 these packages `build-essential cmake qtbase5-dev qtbase5-private-dev qtdeclarative5-dev qtdeclarative5-private-dev libqt5svg5-dev`.
 On Debian these packages need to be installed for Qt6: `build-essential cmake
@@ -74,14 +74,13 @@ set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTORCC ON)
 set(CMAKE_AUTOUIC ON)
 
-find_package(Qt5 REQUIRED COMPONENTS Widgets Quick)
+find_package(Qt5 REQUIRED COMPONENTS Quick)
 find_package(QSkinny REQUIRED)
 
 add_executable(myapp
     src/main.cpp)
 
 target_link_libraries(myapp PRIVATE
-    Qt5::Widgets
     Qt5::Quick
     Qsk::QSkinny)
 ....
@@ -122,9 +121,9 @@ int main( int argc, char* argv[] )
 {
     QGuiApplication app( argc, argv );
 
-    auto* horizontalBox = new QskLinearBox( Qt::Horizontal );
-    auto* button1 = new QskPushButton( "button 1", horizontalBox );
-    auto* button2 = new QskPushButton( "button 2", horizontalBox );
+    auto horizontalBox = new QskLinearBox( Qt::Horizontal );
+    (void) new QskPushButton( "Button 1", horizontalBox );
+    (void) new QskPushButton( "Button 2", horizontalBox );
 
     QskWindow window;
     window.addItem( horizontalBox );