How to overwrite a Widget?

HoliGui

Hi,
I want to create my own QGraphicsView so I created a CustomView that extends QGraphicsView, added a GraphicsView to my .ui and promoted it to use my CustomView
but I can't compile with the exception:

In file included from /home/edu/uni/psys22-projekt/src/ui/dialog.cpp:2:
/home/edu/uni/projekt/cmake-build-debug/src/projekt_autogen/include/./ui_dialog.h:18:10: fatal error: CustomView.h: No such file or directory
   18 | #include "CustomView.h"
      |          ^~~~~~~~~~~~~~

But if I open ui_dialog.h it has the include and the IDE shows no errors even the link works properly (ctrl + left click):

So I don't know what I am doing wrong here.

All my ui files are in the same dir:

and added to cmakefile:

#include <QGraphicsView>
#include <QtWidgets>
#include <QWidget>

class CustomView : public QGraphicsView
{
public:
    explicit CustomView(QWidget* parent = nullptr);
protected:
    virtual void wheelEvent(QWheelEvent *event);
};

#include "CustomView.h"

CustomView::CustomView(QWidget *parent) : QGraphicsView(parent)
{
}

void CustomView::wheelEvent(QWheelEvent *event)
{
    setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
    double scaleFactor = 1.15;
    if (event->angleDelta().y() > 0)
    {
        scale(scaleFactor, scaleFactor);
    } else
    {
        scale(1/scaleFactor, 1/scaleFactor);
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>Dialog</class>
 <widget class="QDialog" name="Dialog">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>821</width>
    <height>617</height>
   </rect>
  </property>
  <property name="sizePolicy">
   <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
    <horstretch>0</horstretch>
    <verstretch>0</verstretch>
   </sizepolicy>
  </property>
  <property name="windowTitle">
   <string>Dialog</string>
  </property>
  <widget class="QPushButton" name="runButton">
   <property name="geometry">
    <rect>
     <x>700</x>
     <y>40</y>
     <width>89</width>
     <height>25</height>
    </rect>
   </property>
   <property name="text">
    <string>run</string>
   </property>
  </widget>
  <widget class="CustomView" name="customView">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>80</y>
     <width>821</width>
     <height>541</height>
    </rect>
   </property>
   <property name="sizeIncrement">
    <size>
     <width>100</width>
     <height>100</height>
    </size>
   </property>
  </widget>
  <widget class="QPushButton" name="resetButton">
   <property name="geometry">
    <rect>
     <x>700</x>
     <y>10</y>
     <width>89</width>
     <height>25</height>
    </rect>
   </property>
   <property name="text">
    <string>reset</string>
   </property>
  </widget>
  <widget class="QSpinBox" name="spinBox">
   <property name="geometry">
    <rect>
     <x>610</x>
     <y>40</y>
     <width>81</width>
     <height>26</height>
    </rect>
   </property>
   <property name="maximum">
    <number>10</number>
   </property>
   <property name="singleStep">
    <number>1</number>
   </property>
   <property name="value">
    <number>10</number>
   </property>
  </widget>
  <widget class="QLabel" name="label">
   <property name="geometry">
    <rect>
     <x>630</x>
     <y>20</y>
     <width>67</width>
     <height>17</height>
    </rect>
   </property>
   <property name="text">
    <string>sleep</string>
   </property>
  </widget>
  <widget class="QPushButton" name="openFile">
   <property name="geometry">
    <rect>
     <x>10</x>
     <y>40</y>
     <width>89</width>
     <height>25</height>
    </rect>
   </property>
   <property name="text">
    <string>files</string>
   </property>
  </widget>
  <widget class="QLabel" name="label_2">
   <property name="geometry">
    <rect>
     <x>20</x>
     <y>20</y>
     <width>67</width>
     <height>17</height>
    </rect>
   </property>
   <property name="text">
    <string>Load data</string>
   </property>
  </widget>
 </widget>
 <customwidgets>
  <customwidget>
   <class>CustomView</class>
   <extends>QGraphicsView</extends>
   <header>CustomView.h</header>
  </customwidget>
 </customwidgets>
 <resources/>
 <connections/>
</ui>

Christian Ehrlicher

You have to add the directory which contains CustomView.h to your target with target_include_directories()