16

如何移动没有边框的窗口。应用程序上没有空白空间,可用的只有一个网络浏览器和一个菜单条。我希望用户能够通过拖动菜单条来移动窗口。我该如何编码?我尝试了一些我在网上找到的代码块,但没有一个有效。

4

8 回答 8

32

这篇Code Project 文章应该可以帮助您完成此任务。我自己用过这个没有问题。这是它的要点:

public const int WM_NCLBUTTONDOWN = 0xA1;
public const int HT_CAPTION = 0x2;

[DllImportAttribute("user32.dll")]
public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
[DllImportAttribute("user32.dll")]
public static extern bool ReleaseCapture();

private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{     
    if (e.Button == MouseButtons.Left)
    {
        ReleaseCapture();
        SendMessage(Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);
    }
}

这基本上会“欺骗”窗口管理器,使其认为它正在抓取 winform 的标题栏。

要将其应用于您的项目,只需使用 MenuStrip 中的 MouseDown 事件。

于 2011-01-02T22:25:05.543 回答
19

这是.Net方式

    private bool dragging = false;
    private Point dragCursorPoint;
    private Point dragFormPoint;

    private void Form1_MouseDown(object sender, MouseEventArgs e)
    {
        dragging = true;
        dragCursorPoint = Cursor.Position;
        dragFormPoint = this.Location;
    }

    private void Form1_MouseMove(object sender, MouseEventArgs e)
    {
        if (dragging)
        {
            Point dif = Point.Subtract(Cursor.Position, new Size(dragCursorPoint));
            this.Location = Point.Add(dragFormPoint, new Size(dif));
        }
    }

    private void Form1_MouseUp(object sender, MouseEventArgs e)
    {
        dragging = false;
    }

就是这样。

于 2013-10-14T09:25:25.797 回答
2

只需将起点放入 2D 数组中,如下所示:

public partial class mainForm : Form
{
    //Global variables for Moving a Borderless Form
    private bool dragging = false;
    private Point startPoint = new Point(0, 0); 


    public mainForm()
    {
        InitializeComponent();
    }

    private void mainForm_MouseDown(object sender, MouseEventArgs e)
    {
        dragging = true;
        startPoint = new Point(e.X, e.Y);

    }

    private void mainForm_MouseUp(object sender, MouseEventArgs e)
    {
        dragging = false;
    }

    private void mainForm_MouseMove(object sender, MouseEventArgs e)
    {
        if (dragging)
        {
            Point p = PointToScreen(e.Location);
            Location = new Point(p.X - this.startPoint.X, p.Y - this.startPoint.Y);

        }

    }
}
于 2017-02-22T12:52:09.380 回答
0

您可以伪造您的菜单条,例如使用带有标签的面板。然后你可以手动处理:当用户点击标签时,会打开一个弹出菜单,当用户拖动标签时,窗口会移动。但我建议不要使用这种变通方法,因为它不是标准的 GUI 行为,而且您可能会让您的用户感到困惑。

于 2011-01-02T05:31:32.427 回答
0

我没试过,但如果你能处理菜单栏上的“OnMouseDown”和“onMouseUp”事件:

  • On mouse down - 根据鼠标移动移动窗口
  • 在鼠标向上或鼠标移出时停止跟踪鼠标移动
于 2011-01-02T22:13:32.130 回答
0

如果您使用的是面板,则必须将其添加到

YourForm.Designer.cs

this.panel1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.panel1_MouseDown);

而这在

YourForm.cs

 public const int WM_NCLBUTTONDOWN = 0xA1;
        public const int HT_CAPTION = 0x2;

        [DllImportAttribute("user32.dll")]
        public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
        [DllImportAttribute("user32.dll")]
        public static extern bool ReleaseCapture();

        private void panel1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                ReleaseCapture();
                SendMessage(Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);
            }
        }
于 2013-07-26T07:18:11.103 回答
0

Mbithi Kioko 是在正确的轨道上,但我会这样做。

    bool dragging = false;
    int xOffset = 0;
    int yOffset = 0;

    private void Form1_MouseDown(object sender, MouseEventArgs e)
    {
        dragging = true;

        xOffset = Cursor.Position.X - this.Location.X;
        yOffset = Cursor.Position.Y - this.Location.Y;
    }

    private void Form1_MouseMove(object sender, MouseEventArgs e)
    {
        if (dragging)
        {
            this.Location = new Point(Cursor.Position.X - xOffset, Cursor.Position.Y - yOffset);
            this.Update();
        }
    }

    private void Form1_MouseUp(object sender, MouseEventArgs e)
    {
        dragging = false;
    }
于 2013-12-11T18:23:20.217 回答
0

我不得不使用System.Runtime.InteropServices.DllImportAttribute-只是想我会发表评论并让大家知道。

于 2017-01-07T02:20:46.153 回答