[WPF]C#调用C++代码（通过C++/CLI）

用途

通过使用C++ + Opencv 编写算法，然后用WPF(C#)编写程序界面，实现交互

可以参考MSDN文档：https://docs.microsoft.com/en-us/cpp/windows/pin-ptr-cpp-cli?view=vs-2017

项目结构

代码

CLR部分：

CLRLibrary.h文件

#pragma once

using namespace System;

using namespace System::Collections::Generic;

#include<opencv2\opencv.hpp>

#include<opencv2\highgui\highgui.hpp>

namespace CLRLibrary {

	public ref class Class1

	{

	public:

		List<Byte>^ ErodeImage(System::String^ filename);

		int Rows;

		int Cols;

	};

}

CLRLibrary.cpp文件

#include "stdafx.h"

using namespace System;

using namespace System::Runtime::InteropServices;

#include "CLRLibrary.h"

#include "H:\CPP\WPF_CPPCLI_Demo\ConsoleLibrary\ErodeClass.h"

#include<opencv2\opencv.hpp>

#include<opencv2\highgui\highgui.hpp>

using namespace cv;

Mat ErodeAction(const char* filename)

{

	Mat img = imread(filename);

	Mat out;

	//获取自定义核

	Mat element = getStructuringElement(MORPH_RECT, Size(15, 15)); //第一个参数MORPH_RECT表示矩形的卷积核，当然还可以选择椭圆形的、交叉型的

	//膨胀操作

	dilate(img, out, element);

	return out;

}

//Erode The Image Func

List<Byte>^ CLRLibrary::Class1::ErodeImage(System::String ^ filename)

{

	//将String^转换成const char*

	IntPtr ip = Marshal::StringToHGlobalAnsi(filename);

	const char* str = static_cast<const char*>(ip.ToPointer());

	Mat result=ErodeAction(str);

	List<Byte>^ ret=gcnew List<Byte>();

	for (int i = 0; i < result.rows; i++)

	{

		for (int j = 0; j < result.cols; j++)

		{

			//RBG

			ret->Add(result.at<Vec3b>(i, j)[0]);

			ret->Add(result.at<Vec3b>(i, j)[1]);

			ret->Add(result.at<Vec3b>(i, j)[2]);

		}

	}

	Rows = result.rows;

	Cols = result.cols;

	return ret;

}

WPF部分：

MainWindow.xaml：

<Window x:Class="WpfApp1.MainWindow"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

        xmlns:local="clr-namespace:WpfApp1"

        mc:Ignorable="d"

        Title="MainWindow" Height="450" Width="800"

        Loaded="MainWindow_OnLoaded">

    <Grid>

        <Image Name="Box"></Image>

    </Grid>

</Window>

MainWindow.xaml.cs：

using System;

using System.Collections.Generic;

using System.Drawing;

using System.IO;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

using CLRLibrary;

using Color = System.Drawing.Color;

namespace WpfApp1

{

    /// <summary>

    /// MainWindow.xaml 的交互逻辑

    /// </summary>

    public partial class MainWindow : Window

    {

        public MainWindow()

        {

            InitializeComponent();

        }

        /// <summary>

        /// 将BitMap转换成ImageSource

        /// </summary>

        /// <param name="bitmap"></param>

        /// <returns></returns>

        public static ImageSource ChangeBitmapToImageSource(Bitmap bitmap)

        {

            //Bitmap bitmap = icon.ToBitmap();  

            IntPtr hBitmap = bitmap.GetHbitmap();

            ImageSource wpfBitmap = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(

                hBitmap,

                IntPtr.Zero,

                Int32Rect.Empty,

                BitmapSizeOptions.FromEmptyOptions());

            return wpfBitmap;

        }

        private void MainWindow_OnLoaded(object sender, RoutedEventArgs e)

        {

            var drawClass=new Class1();

            List<byte> RGBData=drawClass.ErodeImage("D:/Background/1.jpg");

            Bitmap map = new Bitmap(drawClass.Cols, drawClass.Rows);

            int temp = 0;

            for (int i = 0; i < drawClass.Rows; i++)

            {

                for (int j = 0; j < drawClass.Cols; j++)

                {

                    var color = Color.FromArgb(RGBData[temp], RGBData[temp + 1], RGBData[temp + 2]);

                    temp += 3;

                    map.SetPixel(j, i, color);

                }

            }

            Box.Source = ChangeBitmapToImageSource(map);

        }

    }

}

运行效果图

项目所有代码全在上面，如果有需要源码的或者需要交流的可以加我QQ或者微信。

关于更多的C++/CLI代码可以参考我上面给的MSDN文档链接，基本用得到的语法都能从上面找到。

巴特西

[WPF]C#调用C++代码（通过C++/CLI）

用途

项目结构

代码

CLR部分：

WPF部分：

运行效果图

最新文章

热门文章