如何使PrintDialog最顶端

本文关键字：PrintDialog 何使 | 更新日期: 2023-09-27 18:08:52

我已经创建了一个exe，并将在新线程中提示打印对话框。当用户点击另一个应用程序中的按钮时，此exe将运行。我如何使打印对话框顶部最多或不允许用户切换回调用者，直到打印对话框被关闭?谢谢。

Thread t = new Thread(() =>
{
    System.Windows.Controls.PrintDialog pDialog = new System.Windows.Controls.PrintDialog();
    pDialog.PageRangeSelection = PageRangeSelection.AllPages;
    pDialog.UserPageRangeEnabled = true;
    Nullable<Boolean> print = pDialog.ShowDialog();
    if (print == true)
    {
    }
});
t.SetApartmentState(ApartmentState.STA);
t.Start();

如何使PrintDialog最顶端

        `[DllImport("user32.dll", SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        private static extern bool SetWindowPos(IntPtr hWnd,
          int hWndInsertAfter, int x, int y, int cx, int cy, int uFlags);
        private const int HWND_TOPMOST = -1;
        private const int HWND_NOTOPMOST = -2;
        private const int SWP_NOMOVE = 0x0002;
        private const int SWP_NOSIZE = 0x0001;
        private const int SWP_SHOWWINDOW = 0x0040;
        [DllImport("user32.dll", CharSet = CharSet.Unicode)]
        static extern IntPtr FindWindowEx(IntPtr parentHandle, IntPtr childAfter, string lclassName, string windowTitle);
        private bool TweakPrintDialog()
        {
            IntPtr result = IntPtr.Zero;
            IntPtr printDialogHandle = FindWindowEx(<Insert here Current WindowHandler>, result, "#32770", null);
            if (printDialogHandle != IntPtr.Zero)
            {
                SetWindowPos(printDialogHandle, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW);
                return false;
            }
            return true;
        }

'使用:

           Dispatcher.BeginInvoke(new Action(() =>
            {
                do
                {
                    Thread.Sleep(100);
                } while (TweakPrintDialog());
            }));
            if (printDialog.ShowDialog() == true)
            {
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