C# WPF 让你的窗口始终钉在桌面上

IntPtr hWnd = new WindowInteropHelper(Application.Current.MainWindow).Handle;
IntPtr hWndProgMan = FindWindow("Progman", "Program Manager");
SetParent(hWnd, hWndProgMan);

[DllImport("user32.dll", SetLastError = true)]
static extern int SetWindowLong(IntPtr hWnd, int nIndex, IntPtr dwNewLong);
[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr FindWindow(string lpWindowClass, string lpWindowName);
[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr FindWindowEx(IntPtr parentHandle, IntPtr childAfter, string className, string windowTitle);
const int GWL_HWNDPARENT = -8;
[DllImport("user32.dll")]
static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);

var handle = new WindowInteropHelper(Application.Current.MainWindow).Handle;
IntPtr hprog = FindWindowEx(
FindWindowEx(
FindWindow("Progman", "Program Manager"),
IntPtr.Zero, "SHELLDLL_DefView", ""
),
IntPtr.Zero, "SysListView32", "FolderView"
);
SetWindowLong(handle, GWL_HWNDPARENT, hprog);