Use Multi-Byte Character Set

I recently got this error

error C2664: 'InternetOpenW' : cannot convert parameter 1 from 'const char [10]' to 'LPCWSTR'

when I was trying to compile/build my source code including web.cpp and web.h. Later comparing my old setting with the new ones I realized that I solved it using the project properties.

Right Clik on Project name > Properties > Configuration Properties > Character Set should be chosen as "Use Multi-Byte Character Set"

How to Install OpenCV 2.1 on your Windows using Cmake GUI

Download “OpenCV-2.1.0-win.zip” and extract it to “C:\Program Files\OpenCV\OpenCV210”. This folder now should include subfolders like

• C:\Program Files\OpenCV\OpenCV210\3rdparty
• C:\Program Files\OpenCV\OpenCV210\apps
• C:\Program Files\OpenCV\OpenCV210\data
• C:\Program Files\OpenCV\OpenCV210\utils
• And also should include CmakeLists.txt, (C:\Program Files\OpenCV\OpenCV210\CmakeLists.txt)

Download “cmake-2.8.1-win32-x86.exe” and install Cmake GUI.

• Where is the source code? > C:\Program Files\OpenCV\OpenCV210\
• Where to build the binaries? > C:\Program Files\OpenCV\OpenCV210\
• Library files (C:\Program Files\OpenCV\OpenCV210\lib) and Binaries (C:\Program Files\OpenCV\OpenCV210\bin) are going to be put in corresponding folders.
• Click “Configure” for a second time and the red lines will turn white. Then click on “Generate”.
• “OpenCV.sln” will be put in C:\Program Files\OpenCV\OpenCV210\.

Open “OpenCV.sln” using Microsoft Visual Studio 2008 and build whatever you need, Right Click on cv, cxcore, highgui or other library components you may wish and click on “Build” both in Debug and Release modes.

Install OpenCV 2.1 for Microsoft Visual Studio 2008

Install OpenCV:

• Download the OpenCV 2.1.0 Windows installer from SourceForge - "OpenCV-2.1.0-win32-vs2008.exe".
• Install it to a folder, say "C:\Program Files\OpenCV\OpenCV210\". This article will refer to this path as $openCVDir
• During installation check the option to add it to your Current User PATH

Configure Visual Studio:

1. Open VC++ Directories configuration: Tools > Options > Projects and Solutions > VC++ Directories
2. Choose "Show directories for: Include files" then Add "$openCVDir\include\opencv"
3. Choose "Show directories for: Library files" then Add "$openCVDir\lib" (*.lib and *.dll files)
4. Choose "Show directories for: Source files"
   Add "$openCVDir\src\cv"
   Add "$openCVDir\src\cvaux"
   Add "$openCVDir\src\cxcore"
   Add "$openCVDir\src\highgui"
   

Configure your Project:
After you've created a project you'll need to add the OpenCV dependencies.
Open Project Properties: Project > %projectName% Properties...
Open Linker Input properties: Configuration Properties > Linker > Input
Open the "..." window to edit "Additional Dependencies" and on each line put:
"cv210.lib"
"cxcore210.lib"
"highgui210.lib"

"ml210.lib"

"opencv_ffmpeg210.lib"

And any other lib file necessary for your project
Your project should now build. If you get any errors try restarting Visual Studio and then doing a clean Rebuild.

Bet and Win

... yanlis ata oynamaz, ama at yanlis yapabilir.

... will not bet on the wrong horse, but the horse may do wrong.

System Internals

http://www.sysinternals.com/

Process Explorer (procexp.exe)

Running OpenCV using Microsoft Visual Studio 2008

Setting Global Options:

• Go to Tools => Options




• Then, Project and Solutions => VC++ Directories => Library files. Set the directories as shown in image




• Project and Solutions => VC++ Directories => Include files. Set the directories as shown in image.
  

Creating a new project:

• File => New => Project



• In Project Types, select Win32. In Templates, select Win32 Console Application. Give a name for your project right next to "Name:" and click "OK".



• Click "Next" in the next window



• In the "Application Type", select "Console Application". Select "Empty Project" in additional options. Then click "Finish".



• Right click on "Source Files", click Add => New Item.



• Under Categories click on "Code", then under templates click on "C++ File". Then give a name for your *.cpp file.



• From the top menu click on Project => Properties (Alt + F7).



• Go to Configuration Properties => Linker => Input and under additional dependencies add cv200.lib, highgui200.lib, cxcore200.lib, cv200d.lib, highgui200d.lib, cxcore200d.lib



• Compile (Ctrl + F7)



• Build (F7)

Question: I'm developing a C++ command-line application in Visual Studio and need to debug it with command-line arguments. At the moment I just run the generated .exe file with the arguments I need (like this program.exe -file.txt) , but this way I can't debug. Is there somewhere I can specify the arguments for debugging? Thanks a lot.

Answer: Yes, it's on the Debugging section of the properties page of the project. In VS 2008, right click the project, choose properties, go to the Debugging section -- there is a box for command line arguments.