Question

当我们在标题栏上鼠标按下时，我们可以移动窗体。但是当鼠标按下形式时如何移动窗口？

Answer 1

您需要使用MouseDown和MouseUp事件记录鼠标何时停止运行：

private bool mouseIsDown = false;
private Point firstPoint;

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

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

如您所见，第一点正在录制，因此您可以按如下方式使用MouseMove事件：

private void Form1_MouseMove(object sender, MouseEventArgs e)
{
    if (mouseIsDown)
    {
        // Get the difference between the two points
        int xDiff = firstPoint.X - e.Location.X;
        int yDiff = firstPoint.Y - e.Location.Y;

        // Set the new point
        int x = this.Location.X - xDiff;
        int y = this.Location.Y - yDiff;
        this.Location = new Point(x, y);
    }
}

Answer 2

您可以通过处理MouseDown事件手动执行此操作，如其他答案中所述。另一个选择是使用我前一段时间写的这个small utility class。它允许您自动使窗口“可移动”，而无需一行代码。

Answer 3

当鼠标按钮在窗体中向下移动时监听事件，然后听取鼠标移动直到它再次上升。

这是一篇代码项目文章，展示了如何执行此操作：Move window/form without Titlebar in C#

Answer 4

您不能使用MouseUp或Down中提供的位置，您应该使用这样的系统位置

private Point diffPoint;
bool mouseDown = false;

private void Form1_MouseDown(object sender, MouseEventArgs e)
{
  //saves position difference
  diffPoint.X = System.Windows.Forms.Cursor.Position.X - this.Left;
  diffPoint.Y = System.Windows.Forms.Cursor.Position.Y - this.Top;
  mouseDown = true;
}

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

private void Form1_MouseMove(object sender, MouseEventArgs e)
{
  if (mouseDown)
  {
    this.Left = System.Windows.Forms.Cursor.Position.X - diffPoint.X;
    this.Top = System.Windows.Forms.Cursor.Position.Y - diffPoint.Y;
  }
}

这可以通过测试。

鼠标按下时如何移动窗口

4 个答案: