WinUI 3 C++ 控件篇-悬浮弹窗（Popup Notification）

首先我们演示Popub

再Xaml中，添加一个按钮，点击按钮打开这个Popub，然后同时添加一个Popub，默认它是关闭的，点击按钮后，它才显示

    <StackPanel Spacing="24" VerticalAlignment="Top">

        <!-- Raw Popup Root Container -->
        <Popup x:Name="MainPopup" Width="320" Height="180">
            <Border Background="White" BorderBrush="Gray" BorderThickness="1" CornerRadius="8" Padding="16">
                <StackPanel Spacing="12">
                    <TextBlock Text="Custom Popup Content" FontSize="18"/>
                    <TextBlock Text="This is raw Popup base container"/>
                    <Button Content="Close Popup" Click="BtnClosePopup_Click"/>
                </StackPanel>
            </Border>
        </Popup>

        <Button Content="Open Raw Popup Container" Click="BtnOpenPopup_Click" HorizontalAlignment="Left"
        ToolTipService.ToolTip="Open base raw popup layer"/>

    </StackPanel>Code language: HTML, XML (xml)

然后创建 Click=”BtnOpenPopup_Click” 这个按钮点击事件，里面是显示Popub，然后<Popup x:Name=”MainPopup” Width=”320″ Height=”180″> …</Popup> 是创建一个冒泡窗体，默认是关闭的，里面有一个按钮<Button Content=”Close Popup” Click=”BtnClosePopup_Click”/> 这个按钮点击就把按钮所在的Popup 关闭了

按住F12,创建两个按钮事件

.H

#pragma once

#include "MainWindow.g.h"

namespace winrt::AppWinui::implementation
{
    struct MainWindow : MainWindowT<MainWindow>
    {
    public:
        MainWindow();

        int32_t MyProperty();
        void MyProperty(int32_t value);

        void BtnOpenPopup_Click(winrt::Windows::Foundation::IInspectable const& sender, winrt::Microsoft::UI::Xaml::RoutedEventArgs const& e);
        void BtnClosePopup_Click(winrt::Windows::Foundation::IInspectable const& sender, winrt::Microsoft::UI::Xaml::RoutedEventArgs const& e);
    };
}

namespace winrt::AppWinui::factory_implementation
{
    struct MainWindow : MainWindowT<MainWindow, implementation::MainWindow>
    {
    };
}
Code language: C++ (cpp)

#include "pch.h"
#include "MainWindow.xaml.h"
#if __has_include("MainWindow.g.cpp")
#include "MainWindow.g.cpp"
#endif

#include <winrt/Windows.Foundation.h>
#include <winrt/Windows.Globalization.h>

#include <winrt/Windows.UI.h> //Windows::UI::Colors


// 全局命名空间别名，消除::类名找不到、RoutedEventArgs未定义
using namespace winrt;
using namespace Windows::Foundation;
using namespace Windows::Foundation::Collections;
using namespace Microsoft::UI::Xaml;
using namespace Microsoft::UI::Xaml::Controls;
using namespace Microsoft::UI::Xaml::Controls::Primitives;


// To learn more about WinUI, the WinUI project structure,
// and more about our project templates, see: http://aka.ms/winui-project-info.

namespace winrt::AppWinui::implementation
{
    int32_t MainWindow::MyProperty()
    {
        throw hresult_not_implemented();
    }

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

    MainWindow::MainWindow()
    {
        InitializeComponent();
    }
}


void winrt::AppWinui::implementation::MainWindow::BtnOpenPopup_Click(winrt::Windows::Foundation::IInspectable const& sender, winrt::Microsoft::UI::Xaml::RoutedEventArgs const& e)
{
    MainPopup().IsOpen(true);
}

void winrt::AppWinui::implementation::MainWindow::BtnClosePopup_Click(winrt::Windows::Foundation::IInspectable const& sender, winrt::Microsoft::UI::Xaml::RoutedEventArgs const& e)
{
    MainPopup().IsOpen(false);
}
Code language: C++ (cpp)