使无边界表格可移动吗？

有没有一种方法可以使没有边框（FormBorderStyle设置为“ none”）的窗体在鼠标上单击时就像出现边框一样移动？

该文章在CodeProject细节的技术。基本上可以归结为：

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

[System.Runtime.InteropServices.DllImport("user32.dll")]
public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
[System.Runtime.InteropServices.DllImport("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);
    }
}

从窗口管理器的角度来看，这基本上与抓取窗口的标题栏完全相同。

让我们不要使事情变得比他们需要的困难。我遇到了太多的代码片段，这些代码片段使您可以拖动表单（或其他控件）。而且其中许多都有其自身的缺点/副作用。特别是那些诱使Windows认为表单上的控件是实际表单的控件。

话虽如此，这是我的摘录。我用它所有的时间。我还要指出，您不应使用this.Invalidate（）;。就像其他人喜欢的那样，因为它在某些情况下会导致表格闪烁。在某些情况下也是如此。刷新。使用this.Update，我没有任何闪烁的问题：

private bool mouseDown;
private Point lastLocation;

    private void Form1_MouseDown(object sender, MouseEventArgs e)
    {
        mouseDown = true;
        lastLocation = e.Location;
    }

    private void Form1_MouseMove(object sender, MouseEventArgs e)
    {
        if(mouseDown)
        {
            this.Location = new Point(
                (this.Location.X - lastLocation.X) + e.X, (this.Location.Y - lastLocation.Y) + e.Y);

            this.Update();
        }
    }

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

做同一件事的另一种简单方法。

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
        // set this.FormBorderStyle to None here if needed
        // if set to none, make sure you have a way to close the form!
    }
    protected override void WndProc(ref Message m)
    {
        base.WndProc(ref m);
        if (m.Msg == WM_NCHITTEST)
            m.Result = (IntPtr)(HT_CAPTION);
    }

    private const int WM_NCHITTEST = 0x84;
    private const int HT_CLIENT = 0x1;
    private const int HT_CAPTION = 0x2;
}

使用MouseDown，MouseMove和MouseUp。您可以为此设置变量标志。我有一个示例，但我认为您需要进行修改。

我正在将鼠标动作编码到面板上。单击面板后，表单将随之移动。

//Global variables;
private bool _dragging = false;
private Point _offset;
private Point _start_point=new Point(0,0);


private void panel1_MouseDown(object sender, MouseEventArgs e)
{
   _dragging = true;  // _dragging is your variable flag
   _start_point = new Point(e.X, e.Y);
}

private void panel1_MouseUp(object sender, MouseEventArgs e)
{
   _dragging = false; 
}

private void panel1_MouseMove(object sender, MouseEventArgs e)
{
  if(_dragging)
  {
     Point p = PointToScreen(e.Location);
     Location = new Point(p.X - this._start_point.X,p.Y - this._start_point.Y);     
  }
}

仅WPF

没有确切的代码，但是在最近的项目中，我认为我使用了MouseDown事件并将其简单地放入：

frmBorderless.DragMove();

Window.DragMove方法（MSDN）

参考 影片连结

这是经过测试且易于理解的。

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);
}

没有属性可以翻转以使其神奇地发生。查看表单的事件，并通过设置this.Top和来实现此功能变得相当琐碎this.Left。具体来说，你会想看看MouseDown，MouseUp和MouseMove。

public Point mouseLocation;
private void frmInstallDevice_MouseDown(object sender, MouseEventArgs e)
{
  mouseLocation = new Point(-e.X, -e.Y);
}

private void frmInstallDevice_MouseMove(object sender, MouseEventArgs e)
{
  if (e.Button == MouseButtons.Left)
  {
    Point mousePos = Control.MousePosition;
    mousePos.Offset(mouseLocation.X, mouseLocation.Y);
    Location = mousePos;
  }
}

这可以解决您的问题。

https://social.msdn.microsoft.com/Forums/vstudio/zh-CN/d803d869-68e6-46ff-9ff1-fabf78d6393c/how-to-make-a-borderless-form-in-c?forum=csharpgeneral

在上面的链接中，这段代码对我而言是成功的秘诀：）

protected override void OnMouseDown(MouseEventArgs e)  

{
      base.OnMouseDown(e);
      if (e.Button == MouseButtons.Left)
      {
        this.Capture = false;
        Message msg = Message.Create(this.Handle, 0XA1, new IntPtr(2), IntPtr.Zero);
        this.WndProc(ref msg);
      }
}

我找到的最好方法（当然是修改的）

// This adds the event handler for the control
private void AddDrag(Control Control) { Control.MouseDown += new System.Windows.Forms.MouseEventHandler(this.DragForm_MouseDown); }
public const int WM_NCLBUTTONDOWN = 0xA1;
public const int HT_CAPTION = 0x2;
[System.Runtime.InteropServices.DllImportAttribute("user32.dll")]
public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
[System.Runtime.InteropServices.DllImportAttribute("user32.dll")]
public static extern bool ReleaseCapture();

private void DragForm_MouseDown(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Left)
    {
        ReleaseCapture();
        SendMessage(Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);
        // Checks if Y = 0, if so maximize the form
        if (this.Location.Y == 0) { this.WindowState = FormWindowState.Maximized; }
    }
}

要将拖动应用于控件，只需将其插入InitializeComponent（）之后

AddDrag(NameOfControl);

它为我工作。

    private void Form1_MouseDown(object sender, MouseEventArgs e)
    {
        _mouseLoc = e.Location;
    }

    private void Form1_MouseMove(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Left)
        {
            int dx = e.Location.X - _mouseLoc.X;
            int dy = e.Location.Y - _mouseLoc.Y;
            this.Location = new Point(this.Location.X + dx, this.Location.Y + dy);
        }
    }

对于.NET Framework 4，

您可以使用this.DragMove()为MouseDown您所使用的拖放组件（mainLayout在这个例子中）的事件。

private void mainLayout_MouseDown(object sender, MouseButtonEventArgs e)
{
    this.DragMove();
}

最简单的方法是：

首先创建一个名为label1的标签。转到label1的事件>鼠标事件> Label1_Mouse Move并编写以下代码：

if (e.Button == MouseButtons.Left){
    Left += e.X;
    Top += e.Y;`
}

我试图使包含WPF元素宿主控件和WPF用户控件的无边界窗口表单可移动。

我最终在WPF用户控件中创建了一个名为StackPanel的堆栈面板，这似乎是尝试单击移动的合理选择。当我缓慢移动鼠标时，尝试junmats的代码可以工作，但是如果我快速移动鼠标，则鼠标会从表格上移开，并且表格会在移动的中间卡住。

这改善了他对我使用CaptureMouse和ReleaseCaptureMouse的情况的答案，现在即使我快速移动鼠标，鼠标也不会在移动时离开窗体。

private void StackPanel_MouseDown(object sender, MouseButtonEventArgs e)
{
    _start_point = e.GetPosition(this);
    StackPanel.CaptureMouse();
}

private void StackPanel_MouseUp(object sender, MouseButtonEventArgs e)
{
    StackPanel.ReleaseMouseCapture();
}

private void StackPanel_MouseMove(object sender, MouseEventArgs e)
{
    if (StackPanel.IsMouseCaptured)
    {
        var p = _form.GetMousePositionWindowsForms();
        _form.Location = new System.Drawing.Point((int)(p.X - this._start_point.X), (int)(p.Y - this._start_point.Y));
    }
}

    //Global variables;
    private Point _start_point = new Point(0, 0);

由于某些答案不允许子控件可拖动，因此我创建了一个小帮助程序类。应该通过顶层表格。如果需要，可以使其更通用。

class MouseDragger
{
    private readonly Form _form;
    private Point _mouseDown;

    protected void OnMouseDown(object sender, MouseEventArgs e)
    {
        _mouseDown = e.Location;
    }

    protected void OnMouseMove(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Left)
        {
            int dx = e.Location.X - _mouseDown.X;
            int dy = e.Location.Y - _mouseDown.Y;
            _form.Location = new Point(_form.Location.X + dx, _form.Location.Y + dy);
        }
    }
    public MouseDragger(Form form)
    {
        _form = form;

        MakeDraggable(_form);            
    }

    private void MakeDraggable(Control control)
    {
        var type = control.GetType();
        if (typeof(Button).IsAssignableFrom(type))
        {
            return;
        }

        control.MouseDown += OnMouseDown;
        control.MouseMove += OnMouseMove;

        foreach (Control child in control.Controls)
        {
            MakeDraggable(child);
        }
    }
}

同样，如果您需要DoubleClick并使您的Form更大或更小，则可以使用“第一个答案”，创建一个全局int变量，每次用户单击用于拖动的组件时，将其加1。如果这样，variable == 2则使您的表单更大或更小。也每半秒或一秒使用一个计时器使你的variable = 0;

添加一个 MouseLeftButtonDown事件处理程序到MainWindow对我有用。

在自动生成的事件函数中，添加以下代码：

base.OnMouseLeftButtonDown(e);
this.DragMove();

我正在用另一种方法ToolStrip1_MouseLeave处理jay_t55的解决方案，该方法可以处理鼠标快速移动并离开区域的事件。

private bool mouseDown;
private Point lastLocation;

private void ToolStrip1_MouseDown(object sender, MouseEventArgs e) {
    mouseDown = true;
    lastLocation = e.Location;
}

private void ToolStrip1_MouseMove(object sender, MouseEventArgs e) {
    if (mouseDown) {
        this.Location = new Point(
            (this.Location.X - lastLocation.X) + e.X, (this.Location.Y - lastLocation.Y) + e.Y);

        this.Update();
    }
}

private void ToolStrip1_MouseUp(object sender, MouseEventArgs e) {
    mouseDown = false;
}

private void ToolStrip1_MouseLeave(object sender, EventArgs e) {
    mouseDown = false;
}

我尝试了以下操作，然后更改了，我的透明窗口不再冻结到位，而是可以移动的！（丢弃上面所有其他复杂的解决方案...）

   private void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
    {
        base.OnMouseLeftButtonDown(e);
        // Begin dragging the window
        this.DragMove();
    }

Form1（）： new Moveable(control1, control2, control3);

类：

using System;
using System.Windows.Forms;

class Moveable
{
    public const int WM_NCLBUTTONDOWN = 0xA1;
    public const int HT_CAPTION = 0x2;
    [System.Runtime.InteropServices.DllImportAttribute("user32.dll")]
    public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
    [System.Runtime.InteropServices.DllImportAttribute("user32.dll")]
    public static extern bool ReleaseCapture();
    public Moveable(params Control[] controls)
    {
        foreach (var ctrl in controls)
        {
            ctrl.MouseDown += (s, e) =>
            {
                if (e.Button == MouseButtons.Left)
                {
                    ReleaseCapture();
                    SendMessage(ctrl.FindForm().Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);
                    // Checks if Y = 0, if so maximize the form
                    if (ctrl.FindForm().Location.Y == 0) { ctrl.FindForm().WindowState = FormWindowState.Maximized; }
                }
            };
        }
    }
}

   [DllImport("user32.DLL", EntryPoint = "ReleaseCapture")]
    private extern static void ReleaseCapture();

    [DllImport("user32.DLL", EntryPoint = "SendMessage")]
    private extern static void SendMessage(System.IntPtr hWnd, int Msg, int wParam, int lParam);
    private void panelTitleBar_MouseDown(object sender, MouseEventArgs e)
    {
        ReleaseCapture();
        SendMessage(this.Handle, 0x112, 0xf012, 0);
    }