我有一个小问题。我试图在TPanel这样创建TPaintBox: procedure TForm1.mkPaint(S: string);
var PB: TPaintBox;
begin
PB := TPaintBox.Create(Self);
with PB do
begin
Parent := Panel1;
Visible := Tr
这是用Delphi柏林10.1更新2 下工作(我得到的连线): brush := TStrokeBrush.Create(TBrushKind.Solid, TAlphaColors.Lightgray);
brush.Thickness := 2;
with Canvas do
begin
BeginUpdate;
DrawLine(PointF(10, 10), Po