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delphi 使控件变成圆角的方法
procedure RoundControl(Control: TWinControl; arc1, arc2: Integer);
var
R: TRect;
Rgn: HRGN;
begin
with Control do
begin
R := Control.ClientRect;
Rgn := CreateRoundRectRgn(R.Left, R.Top, R.Right, R.Bottom, arc1, arc2);
Perform(EM_GETRECT, 0, lParam(@R));
InflateRect(R, -5, -5);
Perform(EM_SETRECTNP, 0, lParam(@R));
SetWindowRgn(Control.Handle, Rgn, True);
Invalidate;
end;
end;