Question

我发布了这个问题，我希望找出答案。我的问题是：如何在F＃中使代码功能如下：

首先，将这些声明添加到Window类中：

private const int GWL_STYLE = -16;
private const int WS_SYSMENU = 0x80000;
[DllImport("user32.dll", SetLastError = true)]
private static extern int GetWindowLong(IntPtr hWnd, int nIndex);
[DllImport("user32.dll")]
private static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);

然后将此代码放入Window的Loaded事件：

var hwnd = new WindowInteropHelper(this).Handle;
SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) & ~WS_SYSMENU);

Answer 1

tom.maruska 到F＃的翻译代码如下所示：

type HideCloseButtonOnWindow() =
    inherit Behavior<Window>() 

    let GWL_STYLE = -16;
    let WS_SYSMENU = 0x80000;

    [<DllImport("user32.dll", SetLastError = true)>]
    static extern int GetWindowLong(IntPtr hWnd, int nIndex);

    [<DllImport("user32.dll")>]
    static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);

    override x.OnAttached() =
        base.OnAttached()
        x.AssociatedObject.Loaded.AddHandler(fun s e -> x.OnLoaded(s,e))

    override x.OnDetaching() =
        x.AssociatedObject.Loaded.RemoveHandler(fun s e -> x.OnLoaded(s,e))
        base.OnDetaching()


    member x.OnLoaded(sender:obj, e:RoutedEventArgs) =
        let hwnd = (new WindowInteropHelper(x.AssociatedObject)).Handle
        SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) &&& ~~~WS_SYSMENU)
        |> ignore

你应该打开：

open System.Windows.Interactivity
open System.Runtime.InteropServices
open System.Windows.Interop

如何使用WPF＆amp; amp;隐藏关闭按钮F＃

1 个答案: