QT opencv configuration error display images-CodePudding

Bosses, I novice, recent call with QT opencv display pictures, program is easy, but have not learned QT, encountered an error, setPixmat this function error, I see the video code is written in the automatic color change, I don't change color, and the error is said

here, this is a video link https://edu.51cto.com/course/12055.html? Source=so my feeling is that the reason why I copy and paste, something didn't change, don't know what's bosses opinion, can leave a message oh,
Post some pictures, code below,

Pro file:

 
QT +=core GUI 

GreaterThan (QT_MAJOR_VERSION, 4) : QT +=widgets 

TARGET=20200223 
The TEMPLATE=app 


DEFINES +=QT_DEPRECATED_WARNINGS 


INCLUDEPATH +=E:/opencv - 3.2.0/newbuild/install/include \ 
E:/opencv - 3.2.0/newbuild/install/include/opencv \ 
E:/opencv - 3.2.0/newbuild/install/include/opencv2 

LIBS +=E:/opencv - 3.2.0/newbuild/install/x86/mingw/lib/libopencv_core320. DLL. A \ 
E:/opencv - 3.2.0/newbuild/install/x86/mingw/lib/libopencv_highgui320. DLL. A \ 
E:/opencv - 3.2.0/newbuild/install/x86/mingw/lib/libopencv_imgproc320. DLL. A \ 
E:/opencv - 3.2.0/newbuild/install/x86/mingw/lib/libopencv_imgcodecs320. DLL. A \ 
E:/opencv - 3.2.0/newbuild/install/x86/mingw/lib/libopencv_highgui320. DLL. A \ 
E:/opencv - 3.2.0/newbuild/install/x86/mingw/lib/libopencv_videoio320. DLL. A 

SOURCES +=\ 
The main. CPP \ 
Mainwindow. CPP 

HEADERS +=\ 
Mainwindow. H 

FORMS +=\ 
Mainwindow. UI

Mainwindow. H

 # # ifndef MAINWINDOW_H 
# define MAINWINDOW_H 

# include & lt; QMainWindow> 

The namespace Ui {
The class MainWindow. 
} 

The class MainWindow: public QMainWindow 
{
Q_OBJECT 

Public: 
Explicit MainWindow (QWidget * parent=0); 
~ MainWindow (); 

Private slots: 
Void on_pushButton_clicked (); 

Private: 
Ui: : MainWindow * Ui; 
}; 

# endif//MAINWINDOW_H

The main

 # include "mainwindow. H" 
# include & lt; QApplication> 

Int main (int arg c, char * argv []) 
{
QApplication a (arg c, argv); 
The MainWindow w; 
Baron how (); 

Return a.e xec (); 

}

Mainwindow. CPP

 # include "mainwindow. H" 
# include "ui_mainwindow. H" 
#include 
#include 
#include 
#include 
Using the namespace CV; 

MainWindow: : MainWindow (QWidget * parent) : 
QMainWindow (parent), 
UI (new UI: : MainWindow) 
{
The UI - & gt; SetupUi (this); 
} 

MainWindow: : ~ MainWindow () 
{
Delete the UI; 
} 



Void MainWindow: : on_pushButton_clicked () 
{
QString img_name=QFileDialog: : getOpenFileName (this, tr (" Open Image "), ". ", the tr (" Image Files (*. PNG *. JPG *. Jpeg *. BMP) ")); 
Mat src=https://bbs.csdn.net/topics/imread (img_name toLatin1 (). The data ()); 
CV: : cvtColor (SRC, SRC, CV_BGR2RGB); 
QImage img=QImage ((const unsigned char *) (SRC) data), SRC, cols, SRC, rows, QImage: : Format_RGB888); 
The UI - & gt; PushButton - & gt; SetPixmap (QPixmap: : fromImage (img)); 
}

CodePudding user response:

SetPixmap is a function of QLabel
You have to learn to check document
SetIcon function button

CodePudding user response:

Qt provides an introduction to the three pictures of class, to learn how to use the help documentation, to check you need class: QImage, QPixmap, QBitmap, QPicture.

CodePudding user response:

The meaning of this sentence is QPushButton setPixmap members of the class does not function