Question

我正在使用WPF制作Windows应用程序。这是一个简单的GUI，它允许用户选择2 RadioButtons中的1个，一旦选择RadioButton并单击“提交”按钮，一个选项应启动记事本。我正在使用WindowsFormsHost作为主应用程序的子级，并且所需的.exe文件应在该应用程序的子级中启动，从而使.exe在“当前应用程序内”运行。但是，在Visual Studio上调试应用程序时，“记事本”会在单独的窗口中打开，并立即崩溃。

我尝试了StackOverflow答案（Simon Mourier的答案：Hosting external app in WPF window）中建议的几种方法，以及本Microsoft教程：https://docs.microsoft.com/en-us/dotnet/framework/wpf/advanced/walkthrough-hosting-a-win32-control-in-wpf，但仍然没有得到想要的结果。

这是我的一些C＃代码：

调试时，问题似乎出在SetParent(_process.MainWindowHandle, _panel.Handle);

行中

public partial class MainWindow : Window
    {
        private System.Windows.Forms.Panel _panel;
        private Process _process;

        [DllImport("user32.dll")]
        private static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);

        [DllImport("user32.dll", SetLastError = true)]
        private static extern int GetWindowLong(IntPtr hWnd, int nIndex);

        [DllImport("user32")]
        private static extern IntPtr SetParent(IntPtr hWnd, IntPtr hWndParent);

        [DllImport("user32")]
        private static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, int uFlags);

        private const int SWP_NOZORDER = 0x0004;
        private const int SWP_NOACTIVATE = 0x0010;
        private const int GWL_STYLE = -16;
        private const int WS_CAPTION = 0x00C00000;
        private const int WS_THICKFRAME = 0x00040000;

        public MainWindow()
        {
            InitializeComponent();
        }

        private void TrackButton_Click(object sender, RoutedEventArgs e)
        {
            WindowsFormsHost host = new WindowsFormsHost();
            _panel = new System.Windows.Forms.Panel();
            host.Child = _panel;

            if (PostureButton.IsChecked == true) {
               // ProcessStartInfo psi = new ProcessStartInfo("notepad.exe");
               // _process = Process.Start(psi);

               _process = Process.Start(new ProcessStartInfo()
                {
                    FileName = @"C:\Windows\System32\notepad.exe",
                    UseShellExecute = false

                    //WorkingDirectory = @"C:\Windows\System32",
                    //FileName = @"notepad.exe"
                });
                _process.WaitForInputIdle();
                try
                {
                    SetParent(_process.MainWindowHandle, _panel.Handle);
                    // remove control box
                    int style = GetWindowLong(_process.MainWindowHandle, GWL_STYLE);
                    style = style & ~WS_CAPTION & ~WS_THICKFRAME;
                    SetWindowLong(_process.MainWindowHandle, GWL_STYLE, style);
                }
                catch (InvalidOperationException ex) {

                } 

                // resize embedded application & refresh
                ResizeEmbeddedApp();
            }
        }

从WPF中启动notepad.exe（和其他.exe文件）

0 个答案: