获取当前进程(程序)主窗体句柄并设置wpf的父窗体为此句柄

有时候在c++调用wpf控件的时候,wpf控件想自己显示窗体,但需要设置owner属性。迂回解决办法是设置wpf的window窗体的父窗体为进程的句柄。

 

1.获取当前进程id

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int id = Process.GetCurrentProcess().Id;

 

2.根据进程id获取进程主句柄

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public static class ProcessHelper
       {
           private static class Win32
           {
               internal const uint GwOwner = 4;
 
               internal delegate bool EnumWindowsProc(IntPtr hWnd, IntPtr lParam);
 
               [DllImport("User32.dll", CharSet = CharSet.Auto)]
               internal static extern bool EnumWindows(EnumWindowsProc lpEnumFunc, IntPtr lParam);
 
               [DllImport("User32.dll", CharSet = CharSet.Auto)]
               internal static extern int GetWindowThreadProcessId(IntPtr hWnd, out IntPtr lpdwProcessId);
 
               [DllImport("User32.dll", CharSet = CharSet.Auto)]
               internal static extern IntPtr GetWindow(IntPtr hWnd, uint uCmd);
 
               [DllImport("User32.dll", CharSet = CharSet.Auto)]
               internal static extern bool IsWindowVisible(IntPtr hWnd);
           }
 
           public static IntPtr GetProcessHandle(int processId)
           {
               IntPtr processPtr = IntPtr.Zero;
 
               Win32.EnumWindows((hWnd, lParam) =>
               {
                   IntPtr pid;
                   Win32.GetWindowThreadProcessId(hWnd, out pid);
 
                   if (pid == lParam &&
                       Win32.IsWindowVisible(hWnd) &&
                       Win32.GetWindow(hWnd, Win32.GwOwner) == IntPtr.Zero)
                   {
                       processPtr = hWnd;
                       return false;
                   }
 
                   return true;
 
               }, new IntPtr(processId));
 
               return processPtr;
           }
       }

 3.设置wpf的window的父窗体为当前进程主窗口句柄,完整代码如下:

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int id = Process.GetCurrentProcess().Id;
          IntPtr mainPtr = ProcessHelper.GetProcessHandle(id);
          var win = new Window();
          new WindowInteropHelper(win) { Owner = mainPtr };
          win.Show();

 

 

 感谢阅读。

posted @   灰主流  阅读(808)  评论(0编辑  收藏  举报
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