procedure MakeRounded(Control: TWinControl);
var
R: TRect;
Rgn: HRGN;
begin
with Control do
begin
R := ClientRect;
rgn := CreateRoundRectRgn(R.Left, R.Top, R.Right, R.Bottom, 20, 20);
Perform(EM_GETRECT, 0, lParam(@r));
InflateRect(r, - 5, - 5);
Perform(EM_SETRECTNP, 0, lParam(@r));
SetWindowRgn(Handle, rgn, True);
Invalidate;
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
// TMemo:
Memo1.BorderStyle := bsNone;
MakeRounded(Memo1);
// TEdit:
Edit2.BorderStyle := bsNone;
MakeRounded(Edit2);
// TPanel:
MakeRounded(Panel1);
// TStaticText:
MakeRounded(StaticText1);
// TForm
Form1.BorderStyle := bsNone;
MakeRounded(Form1);
end;
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