c# 获取鼠标处窗口句柄,程序嵌入桌面

c txt c using System using System Collections Generic using System ComponentModel using System Data using System Drawing using System Text using System Windows Forms using System Runtime InteropServices namespace WindowsApplication1 public partial class Form1 Form public Form1 InitializeComponent DllImport user32 dll EntryPoint FindWindow public static extern int FindWindow string lpClassName string lpWindowName DllImport user32 dll EntryPoint GetWindow hwnd public static extern int GetWindow int hwnd int wCmd DllImport user32 dll EntryPoint SetParent public static extern int SetParent int hWndChild int hWndNewParent DllImport user32 dll EntryPoint GetCursorPos public static extern int GetCursorPos ref POINTAPI lpPoint StructLayout LayoutKind Sequential API public struct POINTAPI public int X public int Y DllImport user32 dll EntryPoint WindowFromPoint public static extern int WindowFromPoint int xPoint int yPoint private void timer1 Tick object sender EventArgs e POINTAPI point new POINTAPI GetCursorPos ref point int hwnd WindowFromPoint point X point Y this label1 Text point X ToString point Y ToString hwnd ToString const int GW CHILD 5 private void Form1 Load object sender EventArgs e int hDesktop FindWindow Progman null hDesktop GetWindow hDesktop GW CHILD SetParent int this Handle hDesktop using System using System Collections Generic using System ComponentModel using System Data using System Drawing using System Text using System Windows Forms using System Runtime InteropServices namespace ShowInDesk public partial class Form1 Form IntPtr hDesktop public const int GW CHILD 5 public Form1 InitializeComponent this hDesktop GetDesktopHandle DesktopLayer Progman EmbedDesktop this this Handle this hDesktop isMouseDown false public IntPtr GetDesktopHandle DesktopLayer layer hWnd new HandleRef HandleRef hWnd IntPtr hDesktop new IntPtr switch layer case DesktopLayer Progman hDesktop Win32Support FindWindow Progman null break case DesktopLayer SHELLDLL hDesktop Win32Support FindWindow Progman null hWnd new HandleRef this hDesktop hDesktop Win32Support GetWindow hWnd GW CHILD 2 break case DesktopLayer FolderView hDesktop Win32Support FindWindow Progman null hWnd new HandleRef this hDesktop hDesktop Win32Support GetWindow hWnd GW CHILD 2 hWnd new HandleRef this hDesktop hDesktop Win32Support GetWindow hWnd GW CHILD 3 break return hDesktop public void EmbedDesktop Object embeddedWindow IntPtr childWindow IntPtr parentWindow Form window Form embeddedWindow HandleRef HWND BOTTOM new HandleRef embeddedWindow new IntPtr 1 const int SWP FRAMECHANGED 0 x0020 Win32Support SetParent childWindow parentWindow Win32Support SetWindowPos new HandleRef window childWindow HWND BOTTOM 300 300 window Width window Height SWP FRAMECHANGED using System using System Collections Generic using System Text using System Runtime InteropServices namespace ShowInDesk class Win32Support DllImport user32 dll CharSet CharSet Auto public static extern IntPtr FindWindow string className string windowName DllImport user32 dll CharSet CharSet Auto ExactSpelling true public static extern IntPtr GetWindow HandleRef hWnd int nCmd DllImport user32 dll public static extern IntPtr SetParent IntPtr child IntPtr parent DllImport user32 dll EntryPoint GetDCEx CharSet CharSet Auto ExactSpelling true public static extern IntPtr GetDCEx IntPtr hWnd IntPtr hrgnClip int flags DllImport user32 dll CharSet CharSet Auto ExactSpelling true public static extern bool SetWindowPos HandleRef hWnd HandleRef hWndInsertAfter int x int y i