C# 跨进程设置窗口owner-白红宇

C# 跨进程设置窗口owner

阅读量：5090 次

发布时间：2019-06-13

本文共 3316 字，大约阅读时间需要 11 分钟。

原文:

窗口间跨进程通信

1. 发送方

1     public const int WM_InsertChart_Completed = 0x00AA; 2  3     //查找窗口 4     [DllImport("User32.dll", EntryPoint = "FindWindow")] 5     public static extern IntPtr FindWindow(string lpClassName, string lpWindowName); 6  7     //发送信息 8     [DllImport("User32.dll", EntryPoint = "SendMessage")] 9     public static extern int SendMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);10 11     private void PostMessage()12     {13         var procs = Process.GetProcessesByName("MyExample");14 15         foreach (var process in procs)16         {17             SendMessage(process.MainWindowHandle, WM_InsertChart_Completed, IntPtr.Zero, IntPtr.Zero);18         }19     }

还有一个PostMessage方法，和SendMessage类似。

2. 接收方

在winform中，不同进程间窗口通信

1 protected override void DefWndProc(ref Message m)2 {3     ......4 }

在WPF中，如何在俩个不同进程的窗口之间通信.

1     protected override void OnSourceInitialized(EventArgs e) 2     { 3         base.OnSourceInitialized(e); 4         var hwndSource = PresentationSource.FromVisual(this) as HwndSource; 5         hwndSource?.AddHook(new HwndSourceHook(WndProc)); 6     } 7     public const int WM_InsertChart_Completed = 0x00AA; 8     public static IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled) 9     {10         if (msg == WM_InsertChart_Completed )11         {12                       .............13         }14 15         return hwnd;16     }

传递具体的数据，可参考：

跨进程设置窗口owner，并禁用父窗口

此跨进程案例中，以子窗口A与父窗口B为例

1. 获取父窗口B的句柄

windowB的句柄Inptr,可以通过应用程序的名称或者线程Id,获取窗口的句柄。具体可参考

注：客户端之间如果有跨线程通信机制（局域网等），可以直接将父窗口B的句柄传给另一进程的子窗口A

2. 设置子窗口A的owner

var helper = new WindowInteropHelper(windowA);

helper.Owner = windowBInptr;

设置后，仅仅是显示在父窗口B的上层。禁用父窗口见下~

3. 通过消息机制禁用父窗口

子窗口A弹出后，向父窗口B发送禁用窗口消息：

其中，消息值的定义，不能窗口自带的消息值。窗口自带的消息列表，可参考

1         public const int Msg_SetWindowUnEnabled = 100000; 2         public const int Msg_SetWindowEnabled = 100001; 3  4         public static void SetWindowUnEnabled(IntPtr windowIntPtr) 5         { 6             SendMessage(windowIntPtr, Msg_SetWindowUnEnabled, IntPtr.Zero, IntPtr.Zero); 7         } 8  9         public static void SetWindowEnabled(IntPtr windowIntPtr)10         {11             SendMessage(windowIntPtr, Msg_SetWindowEnabled, IntPtr.Zero, IntPtr.Zero);12         }13 14         //发送信息15         [DllImport("User32.dll", EntryPoint = "SendMessage")]16         public static extern int SendMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);

父窗口监听消息，并处理子窗口A发送的窗口禁用消息

1     protected override void OnSourceInitialized(EventArgs e) 2     { 3         base.OnSourceInitialized(e); 4         var hwndSource = PresentationSource.FromVisual(this) as HwndSource; 5         hwndSource?.AddHook(new HwndSourceHook(WndProc)); 6     } 7  8     public IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled) 9     {10         if (msg == WindowHandleHelper.Msg_SetWindowUnEnabled)11         {12             this.IsEnabled = false;13         }14         else if (msg == WindowHandleHelper.Msg_SetWindowEnabled)15         {16             this.IsEnabled = true;17         }18 19         return hwnd;20     }