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Accepted
yvan noume
Asked: 2024-10-11 21:24:25 +0800 CST

如何移动/拖动没有标题栏的 WinUI 3 窗口

  • 772

我想要一个没有标题栏并可从整个客户区域拖动的 winUI 3 窗口。

就像我以前在 Winforms 和 WPF 中所做的那样，我尝试使用 win32 调用（“sendMeaasge”）（参见下面的代码）。但它似乎在 WinUI 3 中被破坏了，因为它不会在按下指针时拖动窗口，而只会在释放指针时拖动窗口。

下面是使用“sendMessage”win32 api 调用的代码。使用此功能时，仅当释放指针时窗口才会移动。

public sealed partial class MainWindow : Window
{
    public MainWindow()
    {
        this.InitializeComponent();

        //Remove the title bar
        (AppWindow?.Presenter as OverlappedPresenter)?.SetBorderAndTitleBar(false, false);
        Content = new Grid() { Background = new SolidColorBrush(Colors.Transparent) };
        this.Content.PointerPressed += MainWindow_PointerPressed;
    }

    private void MainWindow_PointerPressed(object sender, PointerRoutedEventArgs e)
    {
        ReleaseCapture();
        var hwnd = WinRT.Interop.WindowNative.GetWindowHandle(this);
        SendMessage(hwnd, WM_NCLBUTTONDOWN, (IntPtr)HTCAPTION, IntPtr.Zero);
    }

    private const int WM_NCLBUTTONDOWN = 0xA1;
    private const int HTCAPTION = 0x2;

    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    private static extern IntPtr SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, IntPtr lParam);

    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    private static extern bool ReleaseCapture();
}

我也尝试使用pointerPressed、pointerMoved和pointerReleased手动移动窗口，但确实不够流畅。我希望鼠标和触摸都能正常工作，所以这就是为什么我不想使用光标的位置来移动窗口。

winui-3

1 个回答

  1. Best Answer

    您可以尝试将Window内容制作为TitleBar：

    <Window
    x:Class="WinUIApp.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:local="using:WinUIApp4"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Frame
        x:Name="ContentFrame"
        Background="Transparent">
        <TextBlock Text="Your content here..." />
    </Frame>

</Window>

    public sealed partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        CustomizeWindow();
    }

    private void CustomizeWindow()
    {
        if (AppWindow?.Presenter is not OverlappedPresenter presenter)
        {
            return;
        }

        presenter.SetBorderAndTitleBar(hasBorder: false, hasTitleBar: false);
        ExtendsContentIntoTitleBar = true;
        SetTitleBar(this.ContentFrame);
    }
}
    • 0

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