Opencv configuration problem _ error lnk2019

Finally with opencv (win7 64-bit + vs2013 + opencv2.4.9), I was excited to write the first program (of course, it was showing the jade photos of Lena ):

 1 #include <opencv2\opencv.hpp>   2 #include<iostream> 3 //using namespace cv; 4  5 void main() 6 { 7     IplImage *src; 8     src = cvLoadImage("lena.jpg"); //这里将lena.jpg和lena.cpp文件放在同一个文件夹下 9     cvNamedWindow("lena", CV_WINDOW_AUTOSIZE);10     cvShowImage("lena", src);11     cvWaitKey(0);12     cvDestroyWindow("lena");13     cvReleaseImage(&src);14 }

Result vs has the following error message:

The first reaction is that the link library has a problem. Previously, opencv was configured on a 32-bit computer. Therefore, it is estimated that the computer encountered a 64-bit error. After checking for a long time, I finally found the problem:

During compilation, the Win32 platform is still used.

Solution: Go to "Property Manager", right-click the project, and go to "property", for example:

Click "Configuration Manager" in the upper right corner:

Click Win32 under "Active solution platform" in the upper right corner and select the x64 new platform:

Replace the Win32 platform shown in the "Configuration Manager" with the x64 platform. Return to the program as follows:

If you compile the program again, the system will not report an error:

 

opencv configuration problem _ error lnk2019