Windows 8 C # Call windows runtime components written in C ++

Windows runtime components are common public libraries in Windows 8, which can be written in C ++, C #, or VB, however, you can use any language to compile Windows 8 Metro to call the Windows runtime components seamlessly.

The following uses a Windows 8 project written in C # To call a Windows runtime component written in C ++.

Create a Windows runtime component:

Write the followingCode:

# Include"Pch.h"# Include"Winrtcomponent. h"Using NamespaceCppwinrtcomponentdll2;IntCalculatorsample: add (IntX,IntY ){ReturnX +Y ;}
 

Header file

# PragmaOnceUsing NamespaceWindows: Foundation;NamespaceCppwinrtcomponentdll2 {Public Ref ClassCalculatorsampleSealed{Public:IntAdd (IntX,IntY );};}
 

Call the C ++ method of the Windows runtime component in a project written in C #

Add windows runtime Components

UI

<  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  = "Call the winrt method to add"  Horizontalalignment  = "Center"  Click = "Button_click_1"   > </  Button  >              <  Textbox  X: Name  = "Txtaddresult"  Horizontalalignment  = "Center"  Height  = "45"  Width  = "258"  />          </ Stackpanel  >      </  Grid  >  </  Page  > 

C # code

 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; // introduce the Windows runtime Space  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 (); // directly create objects in Windows runtime, which is convenient  Int X = Convert. toint32 (txtx. Text. tostring ());  Int Y = Convert. toint32 (txty. Text. tostring (); txtaddresult. Text = Calcobj. Add (x, y). tostring (); // call the method in Windows runtime }}}} 

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