| //┏━━━━━━━━━━━━━━┓ //┃代码着色:codecolor v1.0 ┃ //┃来自:悄然无声的 blog ┃ //┗━━━━━━━━━━━━━━┛ var b:boolean; procedure tform1.button1click(sender: tobject); begin b:=true; while(b) do begin caption:='working'; application.processmessages; end; end; procedure tform1.button2click(sender: tobject); begin b:=false; caption:='stop'; end; |