如何让Microsoft Visual Studio 2017链接OpenCV 3.4库？编译报错求助

Hey there, let's fix that include error step by step—this is a super common setup issue with OpenCV and Visual Studio, so you're not alone!

Step 1: Confirm your OpenCV installation path #

First, nail down the exact folder where you installed/extracted OpenCV 3.4. The default path usually looks like:
C:\opencv\build
Inside this build folder, you’ll find two critical subfolders:

• include: This is where all your opencv2/*.hpp header files live
• x64/vc15/lib: Since you’re using VS2017 (which uses the VC15 toolset), this is the 64-bit library folder you need

Step 2: Configure Visual Studio's Include Directories #

Open your VS2017 project, then:

• Right-click your project in the Solution Explorer → Select Properties
• In the left pane, navigate to Configuration Properties → VC++ Directories
• Find the Include Directories field, click the dropdown arrow → Edit
• Add the full path to your OpenCV include folder. For example:
  C:\opencv\build\include
• Click OK to save the change

Step 3: Set Up the Library Directories #

Still in the VC++ Directories section:

• Locate Library Directories → Edit
• Add the path to the 64-bit VC15 library folder for OpenCV 3.4:
  C:\opencv\build\x64\vc15\lib
• Save this update

Step 4: Link the OpenCV Libraries #

Next, tell the linker which .lib files to use:

• In the project Properties pane, go to Configuration Properties → Linker → Input
• Find Additional Dependencies → Edit
• Add the matching library filename:
  • For Release mode: opencv_world340.lib
  • For Debug mode: opencv_world340d.lib
• Click OK to apply

Step 5: Verify Platform Architecture Match #

This is an easy mistake to slip up on!

• Make sure your VS project is set to build for x64 (since you installed the x64 version of VC++ 2017)
• Check the dropdown menu at the top of the VS window (next to Debug/Release) and select x64 instead of x86

Step 6: Double-Check Your Include Path #

Your code uses #include<opencv2/highgui/highgui.hpp>—this is correct, but confirm the path exists:
Go to C:\opencv\build\include\opencv2 and make sure there’s a highgui subfolder with highgui.hpp inside it (it should be there by default for OpenCV 3.4).

Quick Runtime Fix (If Needed) #

If the include error is gone but you get a missing DLL runtime error, copy opencv_world340.dll (or opencv_world340d.dll for Debug) from C:\opencv\build\x64\vc15\bin into your project’s output folder (where your .exe is built), or add that bin folder to your system’s PATH environment variable.

内容的提问来源于stack exchange，提问作者CL plane guy