Question

感谢您之前对我的问题的回答。你可以看到以下链接。

现在我面临另一个问题。当我将表单的bordertyle更改为none时，我无法像真实表单那样移动表单。它稳定而且无法移动到任何地方。

在Windows窗体中，正常的bordertyle可以在任何地方移动。但是我想在bordertyle的none属性中移动。我怎样才能做到这一点？如果可以，请告诉我。谢谢你的时间。：）

Answer 1

    public class AppFormBase : Form
    {   
        protected override void OnLoad(EventArgs e)
        {
            if (this.FormBorderStyle == System.Windows.Forms.FormBorderStyle.None)
            {
                this.MouseDown += new MouseEventHandler(AppFormBase_MouseDown);
                this.MouseMove += new MouseEventHandler(AppFormBase_MouseMove);
                this.MouseUp += new MouseEventHandler(AppFormBase_MouseUp);
            }

            base.OnLoad(e);
        }

        void AppFormBase_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button != MouseButtons.Left)
            {
                return;
            }
            downPoint = new Point(e.X, e.Y);
        }

        void AppFormBase_MouseMove(object sender, MouseEventArgs e)
        {
            if (downPoint == Point.Empty)
            {
                return;
            }
            Point location = new Point(
                this.Left + e.X - downPoint.X,
                this.Top + e.Y - downPoint.Y);
            this.Location = location;
        }

        void AppFormBase_MouseUp(object sender, MouseEventArgs e)
        {
            if (e.Button != MouseButtons.Left)
            {
                return;
            }
            downPoint = Point.Empty;
        }

        public Point downPoint = Point.Empty;
    }

Answer 2

看一下本教程：http://www.codeproject.com/KB/cs/csharpmovewindow.aspx。

这是它的要点：

using System.Runtime.InteropServices;

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);
    }
}

Answer 3

public const int WM_NCLBUTTONDOWN = 0xA1;
public const int HT_CAPTION = 0x2;
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
    Capture = false;
    Message msg = Message.Create(Handle, WM_NCLBUTTONDOWN, (IntPtr)HT_CAPTION, IntPtr.Zero);
base.WndProc(ref msg);
}

如何在C＃.Net中移动表单？

3 个答案: