void line_KeyDown(object sender, KeyEventArgs e)
{
e.Handled = true;
// 获取 textBox 对象的相对于 Canvas 的 x坐标 和 y坐标
double x = (double)line.GetValue(Canvas.LeftProperty);
double y = (double)line.GetValue(Canvas.TopProperty);
switch (e.Key)
{
case Key.Up:
line.SetValue(Canvas.TopProperty, y - 1);
break;
case Key.Down:
line.SetValue(Canvas.TopProperty, y + 1);
break;
case Key.Left:
line.SetValue(Canvas.LeftProperty, x - 1);
break;
case Key.Right:
line.SetValue(Canvas.LeftProperty, x + 1);
break;
case Key.Delete:
Canvas c = line.Parent as Canvas;
c.Children.Remove(line);
break;
case Key.C:
break;
case Key.A:
break;
case Key.V:
if (Keyboard.Modifiers == ModifierKeys.Control)
{
BPLine tb = new BPLine();
tb.Cursor = Cursors.Hand;
tb.SetValue(Canvas.LeftProperty, (double)line.GetValue(Canvas.LeftProperty) + 15);
tb.SetValue(Canvas.TopProperty, (double)line.GetValue(Canvas.TopProperty) + 15);
Canvas s1c = line.Parent as Canvas;
try
{
s1c.Children.Add(tb);
}
catch
{
s1c.Children.Remove(tb);
}
}
break;
default:
break;
}
}
protected override void OnKeyDown(KeyEventArgs e)
{
base.OnKeyDown(e);
return;
e.Handled = true;
// 获取 textBox 对象的相对于 Canvas 的 x坐标 和 y坐标
double x = (double)this.GetValue(Canvas.LeftProperty);
double y = (double)this.GetValue(Canvas.TopProperty);
switch (e.Key)
{
case Key.Up:
this.SetValue(Canvas.TopProperty, y - 1);
this.MyLine.SetValue(Canvas.TopProperty, y - 1);
break;
case Key.Down:
this.SetValue(Canvas.TopProperty, y + 1);
this.MyLine.SetValue(Canvas.TopProperty, y + 1);
break;
case Key.Left:
this.SetValue(Canvas.LeftProperty, x - 1);
this.MyLine.SetValue(Canvas.LeftProperty, x - 1);
break;
case Key.Right:
this.SetValue(Canvas.LeftProperty, x + 1);
this.MyLine.SetValue(Canvas.LeftProperty, x + 1);
break;
case Key.Delete:
Canvas c = this.Parent as Canvas;
c.Children.Remove(this);
break;
case Key.C:
break;
case Key.A:
break;
case Key.V:
if (Keyboard.Modifiers == ModifierKeys.Control)
{
BPLine tb = new BPLine();
tb.Cursor = Cursors.Hand;
tb.SetValue(Canvas.LeftProperty, (double)this.GetValue(Canvas.LeftProperty) + 15);
tb.SetValue(Canvas.TopProperty, (double)this.GetValue(Canvas.TopProperty) + 15);
Canvas s1c = this.Parent as Canvas;
try
{
s1c.Children.Add(tb);
}
catch
{
s1c.Children.Remove(tb);
}
}
break;
default:
break;
}
base.OnKeyDown(e);
}