Gets the current process (program) main form handle and sets the parent form of WPF for this handle

Source: Internet
Author: User

Sometimes WPF controls want to display the form themselves, but need to set the Owner property when calling WPF controls in C + +. The roundabout workaround is to set the parent form of the WPF window form to the handle of the process.

1. Get the current process ID

int id = process.getcurrentprocess (). Id;

2. Get the process master handle based on the process ID

 public static class Processhelper {private static class Win32 {internal con                St UINT Gwowner = 4;                Internal delegate bool Enumwindowsproc (IntPtr hWnd, IntPtr lParam); [DllImport ("User32.dll", CharSet = CharSet.Auto)] internal static extern bool EnumWindows (Enumwindowsproc l                Penumfunc, IntPtr LParam); [DllImport ("User32.dll", CharSet = CharSet.Auto)] internal static extern int GetWindowThreadProcessId (INTPT                R 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 PROCESSPT                R = IntPtr.Zero; WiN32.                    EnumWindows (hWnd, LParam) = {IntPtr pid;                    Win32.getwindowthreadprocessid (hWnd, out PID); if (pid = = LParam && win32.iswindowvisible (hWnd) && win32.ge                        Twindow (hwnd, win32.gwowner) = = IntPtr.Zero) {processptr = hwnd;                    return false;                } return true;                }, New IntPtr (processId));            return processptr; }        }

3. Set WPF window's parent form to the current Process main window handle, complete with the following code:

  int id = process.getcurrentprocess (). Id;            IntPtr mainptr = processhelper.getprocesshandle (ID);            var win = new Window ();            New Windowinterophelper (Win) {Owner = mainptr};             Win. Show ();

Thanks for reading.

Gets the current process (program) main form handle and sets the parent form of WPF for this handle

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