在winform上内嵌入其它的程序
这段代码很有意义,用于把一个程序的界面嵌入到我们自己程序的某个指定窗体上.
比如在某个项目里,我需要把基恩士的激光扫描轮廓显示给客户看,但是激光的DLL中并没有这种功能提供. 于是我想先启动激光的官方程序用以显示轮廓, 然后再把这种显示界面嵌入到我自己程序的界面上指定的位置上.
在笔者构想的PLC仿真器由梯形图编辑器, 3D仿真组态环境两部分组成, 这两部分就可以考虑开发成独立的软件,然后嵌入到我需要的另外的一款PLC仿真教学软件中去.
源代码如下:
1 using System; 2 using System.Collections.Generic; 3 using System.ComponentModel; 4 using System.Data; 5 using System.Drawing; 6 using System.Linq; 7 using System.Text; 8 using System.Windows.Forms; 9 using System.Runtime.InteropServices; 10 using System.Diagnostics; 11 using System.Threading; 12 13 namespace WindowsFormsApplication1 14 { 15 public partial class Form1 : Form 16 { 17 Process p; 18 19 public Form1() 20 { 21 InitializeComponent(); 22 } 23 24 #region API 25 [DllImport("user32.dll")] 26 private static extern int SetParent(IntPtr hWndChild, IntPtr hWndParent); 27 28 [DllImport("user32.dll")] 29 private static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow); 30 31 [DllImport("user32.dll", SetLastError = true)] 32 private static extern bool PostMessage(IntPtr hWnd, uint Msg, int wParam, int lParam); 33 34 [DllImport("user32.dll", EntryPoint = "SetWindowPos")] 35 private static extern bool SetWindowPos(IntPtr hWnd, int hWndInsertAfter, 36 int X, int Y, int cx, int cy, uint uFlags); 37 38 [DllImport("user32.dll")] 39 private static extern int SendMessage(IntPtr hWnd, uint Msg, int wParam, int lParam); 40 41 [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)] 42 private static extern uint SetWindowLong(IntPtr hwnd, int nIndex, uint newLong); 43 44 [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)] 45 private static extern uint GetWindowLong(IntPtr hwnd, int nIndex); 46 47 [DllImport("user32.dll", CharSet = CharSet.Auto)] 48 private static extern bool ShowWindow(IntPtr hWnd, short State); 49 50 private const int HWND_TOP = 0x0; 51 private const int WM_COMMAND = 0x0112; 52 private const int WM_QT_PAINT = 0xC2DC; 53 private const int WM_PAINT = 0x000F; 54 private const int WM_SIZE = 0x0005; 55 private const int SWP_FRAMECHANGED = 0x0020; 56 public enum ShowWindowStyles : short 57 { 58 SW_HIDE = 0, 59 SW_SHOWNORMAL = 1, 60 SW_NORMAL = 1, 61 SW_SHOWMINIMIZED = 2, 62 SW_SHOWMAXIMIZED = 3, 63 SW_MAXIMIZE = 3, 64 SW_SHOWNOACTIVATE = 4, 65 SW_SHOW = 5, 66 SW_MINIMIZE = 6, 67 SW_SHOWMINNOACTIVE = 7, 68 SW_SHOWNA = 8, 69 SW_RESTORE = 9, 70 SW_SHOWDEFAULT = 10, 71 SW_FORCEMINIMIZE = 11, 72 SW_MAX = 11 73 } 74 #endregion 75 76 private void Form1_Load(object sender, EventArgs e) 77 { 78 p = new Process(); 79 //需要启动的程序 80 p.StartInfo.FileName = @"calc.exe"; 81 //为了美观,启动的时候最小化程序 82 p.StartInfo.WindowStyle = ProcessWindowStyle.Minimized; 83 //启动 84 p.Start(); 85 86 //这里必须等待,否则启动程序的句柄还没有创建,不能控制程序 87 Thread.Sleep(10000); 88 //最大化启动的程序 89 ShowWindow(p.MainWindowHandle, (short)ShowWindowStyles.SW_MAXIMIZE); 90 //设置被绑架程序的父窗口 91 SetParent(p.MainWindowHandle, this.Handle); 92 //改变尺寸 93 ResizeControl(); 94 } 95 96 //控制嵌入程序的位置和尺寸 97 private void ResizeControl() 98 { 99 SendMessage(p.MainWindowHandle, WM_COMMAND, WM_PAINT, 0); 100 PostMessage(p.MainWindowHandle, WM_QT_PAINT, 0, 0); 101 102 SetWindowPos( 103 p.MainWindowHandle, 104 HWND_TOP, 105 0 - 10,//设置偏移量,把原来窗口的菜单遮住 106 0 - 32, 107 (int)this.Width + 32, 108 (int)this.Height + 32, 109 SWP_FRAMECHANGED); 110 111 SendMessage(p.MainWindowHandle, WM_COMMAND, WM_SIZE, 0); 112 } 113 114 private void Form1_SizeChanged(object sender, EventArgs e) 115 { 116 ResizeControl(); 117 } 118 119 private void Form1_FormClosing(object sender, FormClosingEventArgs e) 120 { 121 p.Kill(); 122 p.Dispose(); 123 } 124 } 125 }
核心功能利用了windows API中的SetParent()
程序运行后, 先启动calc.exe(windows计算器), 然后等待10秒后再显示本程序自己的窗体, 这时你会发现这个窗体已经把calc.exe的界面包含进来的.
这样你就可以清楚的看到嵌入的效果是怎么样的.
效果如上图所示. 但是你的程序在退出前,要自己"杀掉"计算器的进程, 否则你的程序退出它还在.
原创文章,出处 : http://www.cnblogs.com/hackpig/
