摘要： 循环遍历同类控件：form1中有groupbox1，内有多个speedbutton,控制其同时按下。var i:integer;beginfor i:=0 to form1.groupbox1.controlcount-1 doif form1.groupbox1.controls[i] is tspeedbutton thenbegintspeedbutton(form1.groupbox1.controls[i]).allow‍allup:=true;‍tspeedbutton(form1.groupbox1.controls[i]).groupindex:=i+1; tspeedbutt 阅读全文