如何从WPF中可调整大小的窗口中删除最小化和最大化? [英] How do I remove minimize and maximize from a resizable window in WPF?

问题描述

WPF不提供具有允许调整大小但没有最大化或最小化按钮的窗口的功能.我希望能够创建一个这样的窗口，以便可以设置可调整大小的对话框.

WPF doesn't provide the ability to have a window that allows resize but doesn't have maximize or minimize buttons. I'd like to able to make such a window so I can have resizable dialog boxes.

我知道该解决方案将意味着使用pinvoke，但我不确定该调用什么以及如何调用.搜索pinvoke.net并没有发现我需要的任何东西，主要是因为Windows窗体确实在其窗口上提供了CanMinimize和CanMaximize属性.

I'm aware the solution will mean using pinvoke but I'm not sure what to call and how. A search of pinvoke.net didn't turn up any thing that jumped out at me as what I needed, mainly I'm sure because Windows Forms does provide the CanMinimize and CanMaximize properties on its windows.

有人可以指向我或提供有关如何执行此操作的代码(首选C#)吗?

Could someone point me towards or provide code (C# preferred) on how to do this?

推荐答案

我偷了一些在MSDN论坛上找到的代码，并在Window类上做了一个扩展方法，像这样:

I've stolen some code I found on the MSDN forums and made an extension method on the Window class, like this:

internal static class WindowExtensions
{
    // from winuser.h
    private const int GWL_STYLE      = -16,
                      WS_MAXIMIZEBOX = 0x10000,
                      WS_MINIMIZEBOX = 0x20000;

    [DllImport("user32.dll")]
    extern private static int GetWindowLong(IntPtr hwnd, int index);

    [DllImport("user32.dll")]
    extern private static int SetWindowLong(IntPtr hwnd, int index, int value);

    internal static void HideMinimizeAndMaximizeButtons(this Window window)
    {
        IntPtr hwnd = new System.Windows.Interop.WindowInteropHelper(window).Handle;
        var currentStyle = GetWindowLong(hwnd, GWL_STYLE);

        SetWindowLong(hwnd, GWL_STYLE, (currentStyle & ~WS_MAXIMIZEBOX & ~WS_MINIMIZEBOX));
    }
}

唯一要记住的另一件事是，由于某种原因，这在窗口的构造函数中不起作用.我通过将其添加到构造函数中来解决了这个问题:

The only other thing to remember is that for some reason this doesn't work from a window's constructor. I got around that by chucking this into the constructor:

this.SourceInitialized += (x, y) =>
{
    this.HideMinimizeAndMaximizeButtons();
};

希望这会有所帮助！

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