13

如何获取打开的文件夹列表,枚举并以编程方式最小化每个文件夹?

有时,当从应用程序中的一个表单跳转到另一个表单时,某些打开的文件夹会从工具中窃取焦点。防止这种情况对我们的客户来说是重中之重。客户是视障人士,因此他们只能通过屏幕阅读器访问机器。最小化其他窗口(文件夹)根本不是问题,实际上是一个要求。

我试过这个:

foreach (Process p in Process.GetProcessesByName("explorer"))
{
    p.StartInfo.WindowStyle = ProcessWindowStyle.Minimized;
}

果然不出所料。

更新

从这里的答案,我尝试了这个:

    delegate bool EnumThreadDelegate(IntPtr hWnd, IntPtr lParam);

    [DllImport("user32.dll")]
    static extern bool EnumThreadWindows(int dwThreadId, EnumThreadDelegate lpfn, IntPtr lParam);

    static IEnumerable<IntPtr> EnumerateProcessWindowHandles(int processID)
    {
        List<IntPtr> handles = new List<IntPtr>();

        EnumThreadDelegate addWindowHandle = delegate(IntPtr hWnd, IntPtr param)
        {
            handles.Add(hWnd);
            return true;
        };

        foreach (ProcessThread thread in Process.GetProcessById(processID).Threads)                              
            EnumThreadWindows(thread.Id, addWindowHandle, IntPtr.Zero);

        return handles;
    }

    const int SW_MINIMIZED = 6;

    [DllImport("user32.dll")]
    static extern int ShowWindow(IntPtr hWnd, int nCmdShow);

    private void button1_Click(object sender, EventArgs e)
    {
        foreach (IntPtr handle in EnumerateProcessWindowHandles(Process.GetProcessesByName("explorer")[0].Id))
            ShowWindow(handle, SW_MINIMIZED);
    }

这会创建大量不可见的资源管理器窗口,这些窗口会突然出现在任务栏中。我在处理 Windows API 方面有点菜鸟,所以代码本身实际上会有所帮助。

4

5 回答 5

9

请试试这个(代码有点乱,但为了你应该能够通过它的目的;))

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Text;
using System.Globalization;

namespace WindowsFormsApplication20
{
    static class Program
    {
        [STAThread]
        static void Main()
        {
            foreach (IntPtr handle in EnumerateProcessWindowHandles(Process.GetProcessesByName("explorer")[0].Id))
            {
                SendMessage(handle, WM_SYSCOMMAND, SC_MINIMIZE, 0);
            }
        }

        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount);

        static string GetDaClassName(IntPtr hWnd)
        {
            int nRet;
            StringBuilder ClassName = new StringBuilder(100);
            //Get the window class name
            nRet = GetClassName(hWnd, ClassName, ClassName.Capacity);
            if (nRet != 0)
            {
                return ClassName.ToString();
            }
            else
            {
                return null;
            }
        }

        delegate bool EnumThreadDelegate(IntPtr hWnd, IntPtr lParam);

        [DllImport("user32.dll")]
        static extern bool EnumThreadWindows(int dwThreadId, EnumThreadDelegate lpfn, IntPtr lParam);

        static IEnumerable<IntPtr> EnumerateProcessWindowHandles(int processID)
        {
            List<IntPtr> handles = new List<IntPtr>();

            EnumThreadDelegate addWindowHandle = delegate(IntPtr hWnd, IntPtr param)
            {
                string className = GetDaClassName(hWnd);

                switch (className)
                {
                    case null:
                        break;
                    case "ExploreWClass":
                        handles.Add(hWnd);
                        break;
                    case "CabinetWClass":
                        handles.Add(hWnd);
                        break;
                    default:
                        break;
                }

                return true;
            };

            foreach (ProcessThread thread in Process.GetProcessById(processID).Threads)
                EnumThreadWindows(thread.Id, addWindowHandle, IntPtr.Zero);

            return handles;
        }

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, int wParam, int lParam);

        const int WM_SYSCOMMAND = 274;
        const int SC_MINIMIZE = 0xF020;
    }
}

最好的祝福,

茹布罗夫卡

于 2012-02-24T16:39:45.997 回答
5

//通过引用COM库“Microsoft Shell Controls And Automation”-shell32.dll创建Shell类的实例

Shell32.ShellClass objShell = new Shell32.ShellClass();
//Show Desktop
((Shell32.IShellDispatch4)objShell).ToggleDesktop();

编辑:在切换后显示您的应用程序(激活或最大化/恢复)实际上非常困难:

我试过:

Application.DoEvents();

System.Threading.Thread.Sleep(5000);

即使覆盖 WndProc 也无法捕获事件:

private const Int32 WM_SYSCOMMAND = 0x112;
        private const Int32 SC_MINIMIZE = 0xf020;
        protected override void WndProc(ref Message m)
        {
            if (m.Msg == WM_SYSCOMMAND)
            {
                if (m.WParam.ToInt32() == SC_MINIMIZE)
                    return;
            }
            base.WndProc(ref m);
        }

因此,我建议不要将所有其他窗口最小化,而是在操作期间将您的窗口放在顶部,然后在完成后关闭 Always On Top:

  [DllImport("user32.dll")]
    static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);

static readonly IntPtr HWND_TOPMOST = new IntPtr(-1);

const UInt32 SWP_NOSIZE = 0x0001;
const UInt32 SWP_NOMOVE = 0x0002;
const UInt32 TOPMOST_FLAGS = SWP_NOMOVE | SWP_NOSIZE;

public static void MakeTopMost (IntPtr hWnd)
{
    SetWindowPos(hWnd, HWND_TOPMOST, 0, 0, 0, 0, TOPMOST_FLAGS);
}
于 2012-02-13T01:10:15.657 回答
3

如果您愿意使用 p-invoke,您可以使用EnumThreadWindows枚举进程的所有窗口。然后使用ShowWindow将它们最小化。

于 2012-02-13T00:22:04.567 回答
3

有一个比这里接受的答案更“hacky”的解决方案:最小化文件夹

它基于Shell Objects for Scripting。样本:

const int SW_SHOWMINNOACTIVE = 7;

[DllImport("user32.dll")]
static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

static void MinimizeWindow(IntPtr handle)
{
    ShowWindow(handle, SW_SHOWMINNOACTIVE);
}

//call it like:

foreach (IWebBrowser2 window in new Shell().Windows())
{
    if (window.Name == "Windows Explorer")
        MinimizeWindow((IntPtr)window.HWND);
}

使用Internet Explorer 对象模型可以实现相同的目的

// add a reference to "Microsoft Internet Controls" COM component
// also add a 'using SHDocVw;'
foreach (IWebBrowser2 window in new ShellWindows())
{
    if (window.Name == "Windows Explorer")
        MinimizeWindow((IntPtr)window.HWND);
}
于 2014-01-12T15:41:12.600 回答
0

我知道这是一篇旧文章,但如果人们仍在寻找解决方案,这里有一个更短、更简单的方法:

使用 Windows API:

声明一个窗口句柄:(最小化调用可执行文件)

HWND wHandle;  //can be any scope - I use it in main 

在任何地方调用以下命令(取决于 wHandle 的范围):

wHandle = GetActiveWindow(); 
ShowWindow(wHandle, SW_SHOWMINNOACTIVE);
于 2014-02-14T00:44:40.023 回答