我怎样才能移动窗口时，按下鼠标

问题描述

我们能够移动窗口的形式，当我们按下鼠标标题栏。
，但我怎么能移动窗口时，按下鼠标形式？

we able to move windows forms when we mouse down on title bar .but how can I move windows when mouse down in form ?

推荐答案

您需要的时候鼠标记录是向下和向上使用的MouseDown 和的MouseUp 事件：

You'll need to record when the mouse is down and up using the MouseDown and MouseUp events:

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;
}

正如你所看到的，第一点被记录下来，这样你就可以使用的MouseMove 事件如下：

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);
    }
}

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