C# 跨进程设置窗口owner-阿里云开发者社区

C# 跨进程设置窗口owner

2018-09-25 1105

简介： 原文:C# 跨进程设置窗口owner 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.

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原文:C# 跨进程设置窗口owner

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：http://www.360doc.com/content/18/0131/15/45112790_726705014.shtml

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 C# 通过进程名/进程Id 操作窗口

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 https://www.cnblogs.com/shangdawei/p/4014535.html

 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     }