1

所以我只是使用 DwmExtendFrameIntoClientArea（Vista / 7 Aero 的东西）将表单的玻璃区域扩展到客户区域。

我已经在覆盖 Form 类方法 OnMouseDown() 中发送了一条 Windows 消息，导致窗口可以随玻璃区域移动，如此处所述使无边框表单可移动？.

但是，正因为如此，当单击展开的玻璃区域时，我没有收到任何表单 Click / MouseClick / DoubleClick 等事件。

当我双击顶部展开的玻璃区域时，我实际上希望表单最大化，就像普通的标题栏一样。

这是表单继承类的代码：

protected override void OnMouseDown(MouseEventArgs e)
{
    // Fensterverschiebung in Glass-Regionen
    if (_glassMovable && e.Button == MouseButtons.Left
        && (e.X < _glassPadding.Left || e.X > Width - _glassPadding.Right
        || e.Y < _glassPadding.Top || e.Y > Height - _glassPadding.Bottom))
    {
        NativeMethods.ReleaseCapture();
        NativeMethods.SendMessage(Handle, NativeMethods.WM_NCLBUTTONDOWN,
            NativeMethods.HT_CAPTION, 0);
    }

    base.OnMouseDown(e);
}

protected override void OnMouseDoubleClick(MouseEventArgs e)
{
    // Fenstermaximierung / Minimierung in Glass-Regionen
    if (MaximizeBox && e.Button == MouseButtons.Left && e.Y < _glassPadding.Top)
    {
        if (WindowState == FormWindowState.Normal)
        {
            WindowState = FormWindowState.Maximized;
        }
        else if (WindowState == FormWindowState.Maximized)
        {
            WindowState = FormWindowState.Normal;
        }
    }

    base.OnMouseDoubleClick(e);
}

有什么办法可以让它工作吗？

4

1 回答 1

2

指向 WPF 解决方案的 BoltClocks 链接启发了我以下类似的 WinForms 代码。

我现在覆盖 WndProc 而不是 OnMouse* 事件。

玻璃区域的行为与标题栏完全一样，例如在 Windows 7 中拖放支持停靠栏并双击最大化/恢复。此外，此解决方案现在支持右键单击玻璃区域时的系统窗口上下文菜单。

[StructLayout(LayoutKind.Sequential)]
private struct RECT
{
    public int left;
    public int top;
    public int right;
    public int bottom;
}

private const int WM_NCHITTEST     = 0x0084;
private const int WM_NCRBUTTONDOWN = 0x00A4;
private const int WM_SYSCOMMAND    = 0x0112;
private const int HT_CAPTION       = 0x02;
private const int TPM_RIGHTBUTTON  = 0x0002;
private const int TPM_RETURNCMD    = 0x0100;

[DllImport("user32.dll")]
private static extern IntPtr GetSystemMenu(IntPtr hWnd, bool bRevert);

[DllImport("user32.dll")]
private static extern int TrackPopupMenu(int hMenu, int wFlags, int x, int y,
    int nReserved, int hwnd, ref RECT lprc);

[DllImport("user32.dll")]
private static extern int PostMessage(int hWnd, int Msg, int wParam,
    int lParam);

protected override void WndProc(ref Message m)
{
    if (!DesignMode)
    {
        switch (m.Msg)
        {
            case WM_NCHITTEST:
                if (MouseInClientArea())
                {
                    if (MouseInGlassArea())
                    {
                        m.Result = (IntPtr)HT_CAPTION;
                    }
                    else
                    {
                        m.Result = IntPtr.Zero;
                    }
                    return;
                }
                break;
            case WM_NCRBUTTONDOWN:
                if (MouseInClientArea())
                {
                    IntPtr menuHandle = GetSystemMenu(Handle, false);
                    RECT rect = new RECT();
                    int menuItem = TrackPopupMenu(menuHandle.ToInt32(),
                        TPM_RIGHTBUTTON | TPM_RETURNCMD,
                        Cursor.Position.X, Cursor.Position.Y, 0,
                        Handle.ToInt32(), ref rect);
                    if (menuItem != 0)
                    {
                        PostMessage(Handle.ToInt32(), WM_SYSCOMMAND,
                            menuItem, 0);
                    }
                }
                break;
        }
    }
    base.WndProc(ref m);
}

private bool MouseInClientArea()
{
    Point p = PointToClient(Cursor.Position);
    return (p.X > 0 && p.X < ClientRectangle.Width
        && p.Y > 0 && p.Y < ClientRectangle.Height);
}

private bool MouseInGlassArea()
{
    if (_glassPadding.Left == -1 || _glassPadding.Right == -1
        || _glassPadding.Top == -1 || _glassPadding.Bottom == -1)
    {
        return true;
    }
    else
    {
        Point p = PointToClient(Cursor.Position);
        return (p.X < _glassPadding.Left
            || p.X > ClientRectangle.Width - _glassPadding.Right
            || p.Y < _glassPadding.Top
            || p.Y > ClientRectangle.Height - _glassPadding.Bottom);
    }
}
于 2011-10-28T19:08:07.210 回答