"针到桌面"在Win 7，XP兼容 [英] "pin to desktop" in Win 7, XP compatible

问题描述

我怎么能在Win 7实现销到桌面的效果（对显示桌面命令即免疫），使用FindWindow函数+的setparent的方式，或任何其他的会在XP中工作，以及方法？
我知道我可以创造一个小工具，但我想有XP，在那里我有这样的代码做精细的向后兼容性：

 的IntPtr的hWnd = FindWindow函数（NULL，无标题 - 记事本）; 
 IntPtr的hDesktop = FindWindow函数（PROGMAN，项目经理）; 
的setparent（HWND，hDesktop）; 
  

解决方案

在我的WPF应用程序

，我能解决这个问题使用定时器，它的工作无论是在XP和Win 7。

 公共主窗口（）
 {
的InitializeComponent（）; 
 
 //有一些计时器火在每1秒
 DispatcherTimer detectShowDesktopTimer =新DispatcherTimer（）; 
 detectShowDesktopTimer.Tick + =新的EventHandler（detectShowDesktopTimer_Tick）; 
 detectShowDesktopTimer.Interval =新时间跨度（0，0，1）; 
 detectShowDesktopTimer.Start（）; 
} 
 
＃地区的支持，对免疫显示桌面
函数[DllImport（user32.dll中）] 
私人静态外部的IntPtr GetForegroundWindow（）; 
函数[DllImport（user32.dll中）] 
公共静态的extern BOOL SetForegroundWindow（IntPtr的的hWnd）; 
函数[DllImport（user32.dll中）] 
私人静态外部INT GetWindowText函数（IntPtr的的HWND，StringBuilder的文字，诠释计数）; 
 
私人字符串GetWindowText函数（IntPtr的手柄）
 {
 INT字符= 256; 
 StringBuilder的BUFF =新的StringBuilder（字符）; 
如果（GetWindowText函数（句柄，浅黄色，字符）0）
返回buff.ToString（）; 
，否则
返回的String.Empty; 
} 
 #endregion 
 
私人无效detectShowDesktopTimer_Tick（对象发件人，EventArgs五）
 {
 IntPtr的脱颖而出= GetForegroundWindow（）; 
如果（string.IsNullOrWhiteSpace（GetWindowText函数（前）））
 ShowDesktopDetected（）; 
} 
 
私人无效ShowDesktopDetected（）
 {
 WindowInteropHelper wndHelper =新WindowInteropHelper（本）; 
 SetForegroundWindow（wndHelper.Handle）; 
} 
  

How could I achieve "pin to desktop" effect (i.e immune against "Show Desktop" command) in Win 7, using FindWindow + SetParent approach, or any other approach that would work in XP as well ? I know I could create a gadget, but I'd like to have backwards compatibility with XP, where I have this code doing it fine:

IntPtr hWnd = FindWindow(null, "Untitled - Notepad");
IntPtr hDesktop = FindWindow("ProgMan", "Program Manager");
SetParent(hWnd, hDesktop);

解决方案

in my WPF app, I was able to solve it using a timer, it's working both in XP and Win 7.

public MainWindow()
{
    InitializeComponent();

    // have some timer to fire in every 1 second
    DispatcherTimer detectShowDesktopTimer = new DispatcherTimer();
    detectShowDesktopTimer.Tick += new EventHandler(detectShowDesktopTimer_Tick);
    detectShowDesktopTimer.Interval = new TimeSpan(0, 0, 1);
    detectShowDesktopTimer.Start();
}

#region support immunizing against "Show Desktop"
[DllImport("user32.dll")]
private static extern IntPtr GetForegroundWindow();
[DllImport("user32.dll")]
public static extern bool SetForegroundWindow(IntPtr hWnd);
[DllImport("user32.dll")]
private static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int count);

private string GetWindowText(IntPtr handle)
{
    int chars = 256;
    StringBuilder buff = new StringBuilder(chars);
    if (GetWindowText(handle, buff, chars) > 0)
        return buff.ToString();
    else
        return string.Empty;
}
#endregion

private void detectShowDesktopTimer_Tick(object sender, EventArgs e)
{
    IntPtr fore = GetForegroundWindow();
    if (string.IsNullOrWhiteSpace(GetWindowText(fore)))
        ShowDesktopDetected();
}

private void ShowDesktopDetected()
{
    WindowInteropHelper wndHelper = new WindowInteropHelper(this);
    SetForegroundWindow(wndHelper.Handle);
}

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