Windows 8 C#調用C++編寫的Windows運行時組件

Windows運行時組件是Windows 8里面通用的公共庫，它可以使用C++，C#或者VB來編寫，不過你的Windows 8 metro是用什么語言編寫都可以調用無縫地調用Windows運行時組件。

下面通過一個C#編寫的Windows 8項目來調用一個用C++編寫的Windows運行時組件。

創建一個Windows運行時組件：

編寫如下的代碼：

#include "pch.h"
#include "WinRTComponent.h"

using namespace CppWinRTComponentDll2;

int CalculatorSample::Add(int x, int y)
{
    return x+y;
}

 頭文件

#pragma once

using namespace Windows::Foundation;

namespace CppWinRTComponentDll2
{

    public ref class CalculatorSample sealed
    {
    public:
        int Add(int x, int y);

    };
}

在C#編寫的項目中調用Windows運行時組件的C++方法

添加Windows運行時組件

UI部分

<Page
    x:Class="TestWinRTCSDemo.MainPage"
    IsTabStop="false"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:TestWinRTCSDemo"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}">
        <StackPanel>
            <TextBox x:Name="txtX" HorizontalAlignment="Center" Height="45" Width="258"></TextBox>
            <TextBlock   Text="+" HorizontalAlignment="Center"  Height="45" Width="258" FontSize="14" FontWeight="Bold"/>
            <TextBox x:Name="txtY" HorizontalAlignment="Center" Height="45" Width="258"></TextBox>
            <Button Content="調用WinRT方法來相加" HorizontalAlignment="Center" Click="Button_Click_1" ></Button>
            <TextBox x:Name="txtAddResult" HorizontalAlignment="Center" Height="45" Width="258"/>
        </StackPanel>
    </Grid>
</Page>

C#代碼部分

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using CppWinRTComponentDll2;//引入Windows運行時的空間

namespace TestWinRTCSDemo
{

    public sealed partial class MainPage : Page
    {
        public MainPage()
        {
            this.InitializeComponent();
        }

        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            if (txtX.Text != "" && txtY.Text != "")
            {
                 CalculatorSample calcobj =  new  CalculatorSample();//直接創建Windows運行時里面的對象，很方便
                 int x = Convert.ToInt32(txtX.Text.ToString());
                 int y = Convert.ToInt32(txtY.Text.ToString());
                 txtAddResult.Text = calcobj.Add(x,y).ToString();//調用Windows運行時里面的方法
            }
        }
    }
}

運行的效果