一个拖动无标题栏窗体的方法 修正

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上次文章地址/article/4703824.html

上次写了一个一个拖动无标题栏窗体的方法 发现有一些问题就是每次单击的时候 会向上移动两个像素，现在修改一下

代码

private bool isMouseDown = false;
private Point FormLocation; //form的location
private Point mouseOffset; //鼠标的按下位置

private void Messages_MouseDown(object sender, MouseEventArgs e)
{
try
{
if (e.Button == MouseButtons.Left)
{
isMouseDown = true;
FormLocation = this.Location;
mouseOffset = Control.MousePosition;
}

}
catch (Exception)
{

}

}

private void Messages_MouseMove(object sender, MouseEventArgs e)
{
try
{
int _x = 0;
int _y = 0;
if (isMouseDown)
{
Point pt = Control.MousePosition;
_x = mouseOffset.X - pt.X;
_y = mouseOffset.Y - pt.Y;

this.Location = new Point(FormLocation.X - _x, FormLocation.Y - _y);
}

}
catch (Exception )
{

}

}

private void Messages_MouseUp(object sender, MouseEventArgs e)
{
try
{
isMouseDown = false;

}
catch (Exception)
{

}

}