Question

我正在使用C＃XNA屏幕保护套件，到目前为止，除了配置对话框之外，所有内容都已到位，该对话框必须是对Windows提供的屏幕保护程序设置对话框的模态（“/ c：＆lt; hwnd＆gt;“参数）。

我的基准是Vistas内置 3D Text 屏幕保护程序 - 我的代码应提供相同的功能，关于配置对话框， 3D Text 完全模态显示到屏幕“保护程序设置”对话框，单击屏幕保护程序设置对话框时，对话框将闪烁而不接受单击。

我已尝试使用Ryan Farley建议的IWin32Window包装HWND的方法，但即使我的对话框显示在屏幕保护程序设置对话框的顶部，<可以单击em>屏幕保护程序设置对话框。

所以我需要一些奇特的Win32API调用来通知父对话框它已被模态化还是存在更干净的解决方案？

Answer 1

尝试调用SetParent API函数。

Answer 2

实际上，事实证明，Windows提供给屏幕保护程序的HWND是设置对话框的子项，因此通过调用GetParent上的HWND，我得到HWND 1}}代表对话框。

今天是我在stackoverflow.com上写第一个问题并回答第一个问题的那一天。

Answer 3

我遇到了同样的问题。另外，我无法使用.NET直接将对话框挂钩到外部窗口。因此，我提供了一个解决方法，将对话框挂钩到给定窗口句柄的父级：

// ------------------------------------------------------------------------
public class CHelpWindow : Form
{   // this class hooks to a foreign window handle and then it starts a
    // modal dialog to this form; .NET seems not to be able to hook a dialog 
    // to a foreign window directly: therefore this solution

    // retrievs the parent window of the passed child
    [DllImport("user32.dll")]
    private static extern IntPtr GetParent (IntPtr hWndChild);

    // changes the parent window of the passed child
    [DllImport("user32.dll")]
    private static extern IntPtr SetParent (IntPtr hWndChild, IntPtr hWndNewParent);

    // --------------------------------------------------------------------
    public CHelpWindow (long liHandle)
    // this constructor initializes this form and positions itself outside 
    // the client area; then it prepares the call to create the dialog after
    // the form is first shown in the window
    {
        // suppressing multiple layout events
        SuspendLayout ();
        // positioning the windoe outside the parent area
        ClientSize = new Size  ( 1,  1);
        Location   = new Point (-1, -1);
        // the dialog will be created when this form is first shown
        Shown += new EventHandler (HelpWindow_Shown);
        // resuming layout events without executing pending layout requests
        ResumeLayout (false);

        // hooking to the parent of the passed handle: that is the control, not
        // the tab of the screen saver dialog
        IntPtr oParent = GetParent (new IntPtr (liHandle));
        SetParent (Handle, oParent);
    }

    // --------------------------------------------------------------------
    private void HelpWindow_Shown (object oSender, EventArgs oEventArgs)
    // this function is called when the form is first shown; now is the right
    // time to start our configuration dialog
    {
        // now creating the dialog
        CKonfiguration oConfiguration = new CKonfiguration ();
        // starting this dialog with the owner of this object; because this
        // form is hooked to the screen saver dialog, the startet dialog is
        // then indirectly hooked to that dialog
        oConfiguration.ShowDialog (this);
        // we don not need this object any longer
        Close ();
    }
}

从命令行中提取句柄

/c:####

您可以通过

创建对话框

CHelpWindow oHelpWindow = new CHelpWindow (liHandle);
oHelpWindow.ShowDialog ();

默

C＃screensaver：提供HWND的配置对话框模式

3 个答案: