win32获取鼠标位置和移动窗体

最新推荐文章于 2024-12-15 14:20:31 发布

转载最新推荐文章于 2024-12-15 14:20:31 发布 · 5.7k 阅读

本文介绍如何使用Win32 API进行鼠标位置的获取，并实现通过鼠标拖动窗体的功能。具体包括调用user32.dll库中的GetCursorPos函数获取鼠标坐标，以及在窗体的MouseDown和MouseMove事件中实现窗体跟随鼠标的移动。

win32 获取鼠标位置

[DllImport("user32.dll")]
public static extern bool GetCursorPos(out POINT lpPoint);

[StructLayout(LayoutKind.Sequential)]
public struct POINT
{
    public int X;
    public int Y;
    public POINT(int x, int y)
    {
        this.X = x;
        this.Y = y;
    }
}

移动窗体

    private void g1_MouseDown(object sender, MouseButtonEventArgs e)
        {
            if (e.LeftButton == MouseButtonState.Pressed)
            {
                //this.DragMove();
                MouseCursor_Point = System.Windows.Forms.Cursor.Position;
            }
        }
        System.Drawing.Point MouseCursor_Point;
        private void g1_MouseMove(object sender, MouseEventArgs e)
        {
            if (e.LeftButton == MouseButtonState.Pressed)
            {
                System.Drawing.Point MouseCursor_Point_Aux;
                MouseCursor_Point_Aux = System.Windows.Forms.Cursor.Position;
                if (MouseCursor_Point_Aux.X >= MouseCursor_Point.X)
                    this.Left += MouseCursor_Point_Aux.X - MouseCursor_Point.X;
                else
                    this.Left -= MouseCursor_Point.X - MouseCursor_Point_Aux.X;
                if (MouseCursor_Point_Aux.Y >= MouseCursor_Point.Y)
                    this.Top += MouseCursor_Point_Aux.Y - MouseCursor_Point.Y;
                else
                    this.Top -= MouseCursor_Point.Y - MouseCursor_Point_Aux.Y;
                MouseCursor_Point = MouseCursor_Point_Aux;
            }
        }

获取鼠标在窗体内的位置

e.MouseDevice.GetPosition(curtainCanvas);