text label is not a member of 'Ui::Dialog' Qt - image

Question

I am attempting to place an image in a label in my openCV code. The opencv part works swimmingly. However, displaying the Qimage is proving to be a problem. I am placing the image in the label as such.
ui->lblOriginal->setPixmap(QPixmap::fromImage(qimgOriginal));
However, it is telling me that "error: C2039: 'lblOriginal' : is not a member of 'Ui::Dialog'"
lblOriginal is a label in my dialog. Is there something I am missing? This is the entire code in dialog.cpp:
#include "dialog.h"
#include "ui_dialog.h"
Dialog::Dialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::Dialog)
{
ui->setupUi(this);
capWebcam.open(0);
tmrTimer = new QTimer(this);
connect(tmrTimer, SIGNAL(timeout()), this, SLOT(processAndUpdateGUI()));
tmrTimer->start(20);
}
Dialog::~Dialog()
{
delete ui;
}
void Dialog::processAndUpdateGUI(){
capWebcam >> matOriginal;
if(matOriginal.empty() == true)return;
cv::cvtColor(matOriginal,matOriginal, CV_BGR2RGB);
QImage qimgOriginal((uchar*)matOriginal.data, matOriginal.cols, matOriginal.rows,matOriginal.step,QImage::Format_RGB888);
ui->lblOriginal->setPixmap(QPixmap::fromImage(qimgOriginal));
}
The us xml file is below.
<?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>1181</width>
<height>590</height>
</rect>
</property>
<property name="windowTitle">
<string>Dialog</string>
</property>
<widget class="QLabel" name="lblOrignal">
<property name="geometry">
<rect>
<x>80</x>
<y>36</y>
<width>640</width>
<height>480</height>
</rect>
</property>
<property name="autoFillBackground">
<bool>true</bool>
</property>
<property name="text">
<string>TextLabel</string>
</property>
</widget>
</widget>
<layoutdefault spacing="6" margin="11"/>
<resources/>
<connections/>
</ui>

Answer 1

Actually you are making a basic mistake, in your UI fle you have:
<widget class="QLabel" name="lblOrignal">
and your trying to reference as:
ui->lblOriginal->setPixmap(QPixmap::fromImage(qimgOriginal));
So have you checked the difference ? if not lblOrignal is not equals to lblOriginal.