no such file or directory [duplicate] - c++

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no such file or directory
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Closed 2 years ago.
i'm trying to get the image from my webcam using qt, opencv
here's my codes:
.pro file:
#-------------------------------------------------
#
# Project created by QtCreator 2013-12-20T07:42:20
#
#-------------------------------------------------
QT += core gui
TARGET = QtCvCapture
TEMPLATE = app
SOURCES += main.cpp\
mainwindow.cpp \
imagecapture.cpp \
moc_imagecapture.cpp \
moc_mainwindow.cpp
HEADERS += mainwindow.h \
imagecapture.h \
ui_mainwindow.h
FORMS += mainwindow.ui
#include opencv for PC x86
#INCLUDEPATH += /usr/local/include/opencv
#LIBS +=/usr/local/lib/*.so
INCLUDEPATH += C:\opencv\build\include
LIBS += C:\opencv\release\bin\libopencv_core451.dll
LIBS += C:\opencv\release\bin\libopencv_highgui451.dll
LIBS += C:\opencv\release\bin\libopencv_imgcodecs451.dll
LIBS += C:\opencv\release\bin\libopencv_imgproc451.dll
LIBS += C:\opencv\release\bin\libopencv_features2d451.dll
LIBS += C:\opencv\release\bin\libopencv_calib3d451.dll
#include opencv for ARM
#INCLUDEPATH += /opt/opencv.arm/include/opencv
#LIBS += /opt/opencv.arm/lib/*.so
imagecapture.h:
#ifndef IMAGECAPTURE_H
#define IMAGECAPTURE_H
#include <QObject>
#include <QImage>
#include <QTimer>
#include <cv.h>
#include <highgui.h>
class ImageCapture : public QObject
{
Q_OBJECT
public:
explicit ImageCapture(QObject *parent = 0);
~ImageCapture();
signals:
public slots:
//!< attempts to start camera, camera number is given in cameraIndex (see cvCaptureFromCAM docs)
void captureFromCamera( int cameraIndex = -1 ); //index = -1 to capture form any camera
void stopCapture(); //!< stops timer and release OpenCV capture structure
protected:
QImage convert(IplImage * image); //!< create QImage from OpenCV image data
QImage IplImage2QImage(const IplImage *iplImage);
protected slots:
void timer_stick(); //!< grab and send frame on each timer tick
signals:
void imageCaptured( const QImage& image );
void error( const QString& text );
protected:
QTimer * _timer; //!< timeout signal is used to capture frames at regular intervals (or whenever possible in case of camera)
CvCapture * _cvCap; //!< used to grab image data from video or camera
IplImage* imagerd;
};
#endif // IMAGECAPTURE_H
mainwindow.h:
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <imagecapture.h>
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
private:
Ui::MainWindow *ui;
public slots:
void on_actionOpen_Camera_triggered();
void displayImage(const QImage &image);
protected slots:
void captureError(const QString &text);
public:
ImageCapture *_capture;
};
#endif // MAINWINDOW_H
(i don't know if this kind of presentation is acceptable, i haven't seen anyone doing it yet)
the problems are:
C:\Users\FPT Shop\Downloads\QtCvCapture\QtCvCapture\mainwindow.h:4: error: QMainWindow: No such file
or directory
In file included from ..\QtCvCapture\mainwindow.cpp:1:
..\QtCvCapture\mainwindow.h:4:10: fatal error: QMainWindow: No such file or directory
same issues for cv.h and QtGUI/QApplicaiton, this happended when i try to #include them
what I have done: I have installed OpenCV and CMake following the instruction in https://wiki.qt.io/How_to_setup_Qt_and_openCV_on_Windows#OpenCV
the installation was successful, after which I compiled the program, then I'm met with the errors above. I have recheck and the files that the compiler claimed to be missing are there, in the folder (which I have linked in the .pro file). I found some answer said that it could be because my code is outdated? which I found reasonable because the code that's I'm using was published wayy back in 2013... sooo
what do you guys think?