当Windows的FormBorderStyle属性设置为NON时，如何移动Windows表单？

Question

使用C＃。
我正在尝试移动 Form 没有其标题栏。
我发现了一篇有关它的文章： http://www.codeproject.com/kb/cs/csharpmovewindow.aspx

只要我不设置 FormBorderStyle 作为 None.

有没有办法将其与此属性集一起使用 None?

Answer 1

我知道这个问题已经有一年多了，但是我正在寻找试图记住我过去如何做的。因此，对于其他任何人的参考，最快且不太复杂的方式，那么上述链接是覆盖WNDProc函数。

/*
Constants in Windows API
0x84 = WM_NCHITTEST - Mouse Capture Test
0x1 = HTCLIENT - Application Client Area
0x2 = HTCAPTION - Application Title Bar

This function intercepts all the commands sent to the application. 
It checks to see of the message is a mouse click in the application. 
It passes the action to the base action by default. It reassigns 
the action to the title bar if it occured in the client area
to allow the drag and move behavior.
*/

protected override void WndProc(ref Message m)
{
    switch(m.Msg)
    {
        case 0x84:
            base.WndProc(ref m);
            if ((int)m.Result == 0x1)
                m.Result = (IntPtr)0x2;
            return;
    }

    base.WndProc(ref m);
}

这将允许通过在客户端区域内单击和拖动来移动任何表格。

Answer 2

这是我发现的最好方法。这是一种“ .NET方式”，使用WNDProc。您只需要处理想要拖动的表面的Mousedown，Mousemove和MouseUp事件即可。

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

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

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

Answer 3

不久前，我有同样的问题，在搜索答案时，我找到了下面的代码（不记得网站），这就是我要做的：

    Point mousedownpoint = Point.Empty;

    private void Form_MouseDown(object sender, MouseEventArgs e)
    {
        mousedownpoint = new Point(e.X, e.Y);
    }

    private void Form_MouseMove(object sender, MouseEventArgs e)
    {

        if (mousedownpoint.IsEmpty)
            return;
        Form f = sender as Form;
        f.Location = new Point(f.Location.X + (e.X - mousedownpoint.X), f.Location.Y + (e.Y - mousedownpoint.Y));

    }

    private void Form_MouseUp(object sender, MouseEventArgs e)
    {
        mousedownpoint = Point.Empty;
    }

Answer 4

首先，我们将必须使用名称空间作为

using System.Runtime.InteropServices;

接下来的事情是定义将要照顾表单的消息。我们将把这些作为班级成员变量

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();

最后，每当用户按下鼠标按钮时，我们将编写代码以发送消息。如果用户按按下鼠标按钮，则表格将根据鼠标移动重新定位。

private void Form1_MouseDown(object sender, MouseEventArgs e)
{
    ReleaseCapture();
    SendMessage(this.Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0); 
}

请参阅此链接 可拖动的形式

学分 Rahul-Rajat-Singh

Answer 5

点mousedownpoint = point.empty;

    private void Form_MouseDown(object sender, MouseEventArgs e)
    {
        mousedownpoint = new Point(e.X, e.Y);
    }

    private void Form_MouseMove(object sender, MouseEventArgs e)
    {

        if (mousedownpoint.IsEmpty)
            return;
        Form f = sender as Form;
        f.Location = new Point(f.Location.X + (e.X - mousedownpoint.X), f.Location.Y + (e.Y - mousedownpoint.Y));

    }

    private void Form_MouseUp(object sender, MouseEventArgs e)
    {
        mousedownpoint = Point.Empty;
    }

    private void panel1_MouseDown(object sender, MouseEventArgs e)
    {
        Form_MouseDown(this, e);
    }

    private void panel1_MouseUp(object sender, MouseEventArgs e)
    {
        Form_MouseUp(this, e);
    }

    private void panel1_MouseMove(object sender, MouseEventArgs e)
    {
        Form_MouseMove(this, e);
    }