private void MarkedPicture_MouseDown(object sender, MouseEventArgs e)
{
ChangeFocus.CreateInstance()?.Hide();
SetDownDelt(e.Location);
if (e.Button == MouseButtons.Left)
{
mouseDownPosition = e.Location; //记录每次点击时鼠标按下的位置
MouseLeftDown = true;
}
else if (e.Button == MouseButtons.Right)
{
if (CurFocus != null && CurFocus != TheBoard)
{
Point de = ShowToPos(e.Location);
Direction dir = CurFocus.MouseOverWhere(de);
if (dir > Direction.outside)
{
Point p = e.Location;
ChangeFocus cf = ChangeFocus.CreateInstance();
p.Offset(getRealLocation(this, theMainForm));
cf.Location = p;
if (cf.Bottom > Screen.PrimaryScreen.Bounds.Height)
{
p.Offset(0, -cf.Height);
cf.Location = p;
}
cf.Show();
}
}
}
TheBoard?.OnMouseDown(sender, e);//ShowToPos(e.Location));
}
public static ChangeFocus CreateInstance()
{
if (singletonForm == null || singletonForm.IsDisposed)
{
singletonForm = new ChangeFocus();
}
return(singletonForm);
}