VSTO Excel插件中的独立WPF表单将无法保持焦点
我正在创build一个Excel的VSTO插件，我的第一次尝试，但我不满意的devise。 由于标准的VSTO只处理Windows窗体。 我现在正在进入WPF，并发现布局和animation的选项使用户体验更好。
我现在发现，我可以添加一个WPF项目的VSTO解决scheme，并调用这种forms…非常好！
问题是当我加载一个窗体，我这样做：
Dim NewForm as New NewForm NewForm.Show() 这工作正常，并打开窗体，但是，如果我尝试键入一个文本框，窗体下降后面的Excel和文本进入Excel中的活动单元格。
如果我做：
Dim NewForm as New NewForm NewForm.ShowDialog()
它工作正常。 不幸的是，我不能有我的应用程序模式的forms。 我怎样才能解决这个问题？
我使用以下类： https ： //dl.dropboxusercontent.com/u/62538279/Help/OfficeDialog.cs
你会注意到ShowDialog（）方法被取代
该类还使对话框看起来像一个Word VBA表单（我的客户经常需要的东西）
我的dialog.xaml.cs类看起来像（和XAML匹配）：
public partial class myDialog : OfficeDialog
– 编辑 –
这是源代码。 我一直在遇到麻烦。 偶尔会在应用程序后面滑行（很less）
using System; using System.Diagnostics; using System.Runtime.InteropServices; using System.Windows; using System.Windows.Interop; public class OfficeDialog : Window { [DllImport("user32.dll")] static extern int GetWindowLong(IntPtr hwnd, int index); [DllImport("user32.dll")] static extern int SetWindowLong(IntPtr hwnd, int index, int newStyle); [DllImport("user32.dll")] static extern bool SetWindowPos(IntPtr hwnd, IntPtr hwndInsertAfter, int x, int y, int width, int height, uint flags); [DllImport("user32.dll")] static extern IntPtr SendMessage(IntPtr hwnd, uint msg, IntPtr wParam, IntPtr lParam); const int GWL_EXSTYLE = -20; const int WS_EX_DLGMODALFRAME = 0x0001; const int SWP_NOSIZE = 0x0001; const int SWP_NOMOVE = 0x0002; const int SWP_NOZORDER = 0x0004; const int SWP_FRAMECHANGED = 0x0020; const uint WM_SETICON = 0x0080; const int ICON_SMALL = 0; const int ICON_BIG = 1; /// <summary> /// Sometimes get System.ComponentModel.Win32Exception: Invalid window handle /// I'm pretty sure that this is because Word is shit at handling windows and has an internal memory leak /// http://stackoverflow.com/questions/222649/winforms-issue-error-creating-window-handle /// I'm not sure why this error isn't trapped and logged by the try catch below. Somehow it bubbles up to the calling routine.. /// </summary> public OfficeDialog() { this.ShowInTaskbar = false; //this.Topmost = true; //Uri uri = new Uri("PresentationFramework.Aero;V3.0.0.0;31bf3856ad364e35;component\\themes/aero.normalcolor.xaml", UriKind.Relative); //Uri uri = new Uri("PresentationFramework.Classic;V3.0.0.0;31bf3856ad364e35;component\\themes/classic.xaml", UriKind.Relative); //Resources.MergedDictionaries.Add(Application.LoadComponent(uri) as ResourceDictionary); //var helper = new WindowInteropHelper(this); //using (Process currentProcess = Process.GetCurrentProcess()) // helper.Owner = currentProcess.MainWindowHandle; } public new void ShowDialog() { try { var helper = new WindowInteropHelper(this); using (Process currentProcess = Process.GetCurrentProcess()) helper.Owner = currentProcess.MainWindowHandle; base.ShowDialog(); } catch (System.ComponentModel.Win32Exception ex) { Message.LogWarning(ex); //this.Topmost = true; var helper = new WindowInteropHelper(this); using (Process currentProcess = Process.GetCurrentProcess()) helper.Owner = currentProcess.MainWindowHandle; base.ShowDialog(); } } protected override void OnSourceInitialized(EventArgs e) { base.OnSourceInitialized(e); RemoveIcon(this); HideMinimizeAndMaximizeButtons(this); //using (Process currentProcess = Process.GetCurrentProcess()) // SetCentering(this, currentProcess.MainWindowHandle); } public static void HideMinimizeAndMaximizeButtons(Window window) { const int GWL_STYLE = -16; IntPtr hwnd = new WindowInteropHelper(window).Handle; long value = GetWindowLong(hwnd, GWL_STYLE); SetWindowLong(hwnd, GWL_STYLE, (int)(value & -131073 & -65537)); } public static void RemoveIcon(Window w) { // Get this window's handle IntPtr hwnd = new WindowInteropHelper(w).Handle; // Change the extended window style to not show a window icon int extendedStyle = OfficeDialog.GetWindowLong(hwnd, GWL_EXSTYLE); OfficeDialog.SetWindowLong(hwnd, GWL_EXSTYLE, extendedStyle | WS_EX_DLGMODALFRAME); // reset the icon, both calls important OfficeDialog.SendMessage(hwnd, WM_SETICON, (IntPtr)ICON_SMALL, IntPtr.Zero); OfficeDialog.SendMessage(hwnd, WM_SETICON, (IntPtr)ICON_BIG, IntPtr.Zero); // Update the window's non-client area to reflect the changes OfficeDialog.SetWindowPos(hwnd, IntPtr.Zero, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED); } static void SetCentering(Window win, IntPtr ownerHandle) { bool isWindow = IsWindow(ownerHandle); if (!isWindow) //Don't try and centre the window if the ownerHandle is invalid. To resolve issue with invalid window handle error { //Message.LogInfo(string.Format("ownerHandle IsWindow: {0}", isWindow)); return; } //Show in center of owner if win form. if (ownerHandle.ToInt32() != 0) { var helper = new WindowInteropHelper(win); helper.Owner = ownerHandle; win.WindowStartupLocation = WindowStartupLocation.CenterOwner; } else win.WindowStartupLocation = WindowStartupLocation.CenterOwner; } [DllImport("user32.dll")] [return: MarshalAs(UnmanagedType.Bool)] static extern bool IsWindow(IntPtr hWnd); }