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c++-winrt - C++/winRT xaml 键盘事件处理程序

问题描述

以下内容在编译时会产生“1 unresolved externals ...”我的问题是 - 什么是正确的参数？

using namespace winrt;
using namespace Windows::UI::Xaml;
using namespace Windows::UI::Xaml::Input;

xaml
KeyDown="Keyboard_keyDown"

 .h
 void Keyboard_keyDown(Windows::Foundation::IInspectable const& sender, 
   Windows::UI::Xaml::Input::KeyRoutedEventArgs e);

 .cpp
 void SettingsPage::Keyboard_keyDown(IInspectable const& sender,
Windows::UI::Xaml::Input::KeyRoutedEventArgs e) {...}

主页.xaml

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

KeyDown="Keyboard_keyDown"

>

<StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
    <Button x:Name="myButton" Click="ClickHandler">Click Me</Button>
</StackPanel>

主页.h

编译用一次

包括“MainPage.gh”

命名空间 winrt::DemoProblemApp::implementation { struct MainPage : MainPageT { MainPage();

    int32_t MyProperty();
    void MyProperty(int32_t value);
    void Keyboard_keyDown(Windows::Foundation::IInspectable const& sender, Windows::UI::Xaml::Input::KeyRoutedEventArgs e);
    void ClickHandler(Windows::Foundation::IInspectable const& sender, Windows::UI::Xaml::RoutedEventArgs const& args);
}; }

命名空间 winrt::DemoProblemApp::factory_implementation { struct MainPage : MainPageT { }; }

主页.cpp

    #include "pch.h"
#include "MainPage.h"

using namespace winrt;
using namespace Windows::UI::Xaml;

namespace winrt::DemoProblemApp::implementation {
    MainPage::MainPage() {
        InitializeComponent();
    }

    int32_t MainPage::MyProperty() {
        throw hresult_not_implemented();
    }

    void MainPage::MyProperty(int32_t /* value */) {
        throw hresult_not_implemented();
    }

    void MainPage::ClickHandler(IInspectable const&, RoutedEventArgs   const&) {
        myButton().Content(box_value(L"Clicked"));
    }

    void MainPage::Keyboard_keyDown(Windows::Foundation::IInspectable     const& sender, Windows::UI::Xaml::Input::KeyRoutedEventArgs e) {

    }


}

我将处理程序 (,h & ,cpp) 更改为以下内容并且存在问题： void Keyboard_KeyDown(Windows::Foundation::IInspectable const& sender, Windows::UI::Xaml::Input::KeyRoutedEventArgs const& e);

2018-1207 - 将其包含在 .h 文件中

包括

标签： c++-winrt

解决方案

.H 文件中缺少此内容

#include <winrt/Windows.UI.Xaml.Input.h>

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