Qt编译opencv找不到头文件

pro文件
QT += core
QT -= gui
TARGET = untitled111CONFIG += consoleCONFIG -= app_bundle
TEMPLATE = app

SOURCES += main.cpp
INCLUDEPATH += C:\Program Files (x86)\opencv\build\include\
C:\Program Files (x86)\opencv\build\include\opencv\
C:\Program Files (x86)\opencv\build\include\opencv2

 

源文件
#include <opencv2/opencv.hpp>  //显示找不到文件
using namespace cv;
int main()
{
Mat img = imread("D:\untitled\2.jpg");
if(img.empty())
{ fprintf(stderr,"Error: load image failed."); return -1; }
namedWindow("image", CV_WINDOW_AUTOSIZE);
imshow("image", img);
waitKey();
return 0;
}

 

 

 

原因：Windows的路径都要用双引号包起来，有空格的路径里，空格会截断路径，会将空格前后拆分为两个路径，涉及有空格的路径要用双引号包装。