Unable to link opencv to windows form application
i have linked opencv to console application but when i tried to link it to windows form application VS 2010 it gives me following errors
Error 1 error C2065: 'IplImage' : undeclared identifier c:\users\ayesha\documents\visual studio 2010\projects\abc\abc\Form1.h 130 1 abc
Error 2 error C3861: 'cvLoadImage': identifier not found c:\users\ayesha\documents\visual studio 2010\projects\abc\abc\Form1.h 130 1 abc
#pragma once
#include "highgui.h"
#include <opencv2/imgproc/imgproc.hpp> // Gaussian Blur
#include <opencv2/core/core.hpp> // Basic OpenCV structures (cv::Mat, Scalar)
#include <opencv2/highgui/highgui.hpp>
namespace abc {
using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;
using namespace System::IO;
/// <summary>
/// Summary for Form1
/// </summary>
public ref class Form1 : public System::Windows::Forms::Form
{
public:
Form1(void)
{
InitializeComponent();
//
//TODO: Add the constructor code here
//
}
protected:
/// <summary>
/// Clean up any resources being used.
/// </summary>
~Form1()
{
if (components)
{
delete components;
}
}
private: System::Windows::Forms::Button^ button1;
private: System::Windows::Forms::TextBox^ path;
private: System::Windows::Forms::Button^ summary;
protected:
private:
/// <summary>
/// Required designer variable.
/// </summary>
System::ComponentModel::Container ^components;
#pragma region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
void InitializeComponent(void)
{
this->button1 = (gcnew System::Windows::Forms::Button());
this->path = (gcnew System::Windows::Forms::TextBox());
this->summary = (gcnew System::Windows::Forms::Button());
this->SuspendLayout();
//
// button1
//
this->button1->Location = System::Drawing::Point(392, 68);
this->button1->Name = L"button1";
this->button1->Size = System::Drawing::Size(75, 23);
this->button1->TabIndex = 0;
this->button1->Text = L"browse";
this->button1->UseVisualStyleBackColor = true;
this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
//
// path
//
this->path->Location = System::Drawing::Point(23, 68);
this->path->Name = L"path";
this->path->Size = System::Drawing::Size(304, 20);
this->path->TabIndex = 1;
//
// summary
//
this->summary->Location = System::Drawing::Point(153, 156);
this->summary->Name = L"summary";
this->summary->Size = System::Drawing::Size(159, 27);
this->summary->TabIndex = 2;
this->summary->Text = L"summaize video";
this->summary->UseVisualStyleBackColor = true;
this->summary->Click += gcnew System::EventHandler(this, &Form1::summary_Click);
//
// Form1
//
this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
this->ClientSize = System::Drawing::Size(568, 262);
this->Controls->Add(this->summary);
this->Controls->Add(this->path);
this->Controls->Add(this->button1);
this->Name = L"Form1";
this->Text = L"Form1";
this->ResumeLayout(false);
this->PerformLayout();
}
#pragma endregion
private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {
Stream^ myStream;
OpenFileDialog^ openFileDialog1 = gcnew OpenFileDialog;
openFileDialog1->InitialDirectory = "c:\\";
openFileDialog1->Filter = "txt files (*.avi)|*.avi|All files (*.*)|*.*";
openFileDialog1->FilterIndex = 2;
openFileDialog1->RestoreDirectory = true;
if ( openFileDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK )
{
if ( (myStream = openFileDialog1->OpenFile()) != nullptr )
{
path->Text = Convert::ToString(openFileDialog1->FileName);
// Insert code to read the stream here.
String ^ temp = "you have successfully browsed a video";
System::Windows::Forms::MessageBox::Show(temp);
myStream->Close();
}
}
}
private: System::Void summary_Click(System::Object^ sender, System::EventArgs^ e) {
// Set ...
add:
#include "opencv/cv.h"
?also, it probably should be : "opencv/highgui.h", not just "highgui.h". did you omit an error here ?
13 errors like the below appears after adding these headers
Error 8 error LNK2001: unresolved external symbol "public: virtual void __thiscall cv::HOGDescriptor::write(class cv::FileStorage &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)const " (?write@HOGDescriptor@cv@@UBEXAAVFileStorage@2@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) C:\Users\Ayesha\Documents\Visual Studio 2010\Projects\abc\abc\abc.obj abc
believe it or not, that's progress ;)
your first errors were compiler errors, those now are linker errors.
you forgot to link some libraries, opencv_core246.lib, opencv_objdetect246.lib, opencv_highgui246.lib, opencv_imgproc246.lib. (all of them with a 'd' at the end for DEBUG build)
after editing .hpp ti .h gives this error
Error 1 error C1083: Cannot open include file: 'opencv2/imgproc/imgproc.h': No such file or directory c:\users\ayesha\documents\visual studio 2010\projects\abc\abc\Form1.h 3 1 abc
where i have to place 'd' ?
. Adding opencv_objdetect230.lib removed my errors . Thanks a lot. Thanks once again
oh, nice. you obviously solved the 'opencv2/imgproc/imgproc.hpp' problem on your own ;)
and it will be opencv_objdetect230d.lib for DEBUG.