参考一下这个小程序: procedure TForm1.Button1Click(Sender: TObject); var i,j:integer; begin ProgressBar1.Max:=100; ProgressBar1.Position:=0; for i:=1 to 100 do begin for j:=-999999 to 999999 do ; ProgressBar1.Position:=ProgressBar1.Position+1; end; end; 也就是你的导数据之前,要给ProgressBar1.Max和 ProgressBar1.Position赋值 然后在导的过程中,增加ProgressBar1.Position就可以了
怎么做?
procedure TForm1.Button1Click(Sender: TObject);
var
i,j:integer;
begin
ProgressBar1.Max:=100;
ProgressBar1.Position:=0;
for i:=1 to 100 do
begin
for j:=-999999 to 999999 do ;
ProgressBar1.Position:=ProgressBar1.Position+1;
end;
end;
也就是你的导数据之前,要给ProgressBar1.Max和 ProgressBar1.Position赋值
然后在导的过程中,增加ProgressBar1.Position就可以了
我是低受,不敢说了5~~~~~~~~~~~
生成新的线程mythread;
unit mythread;
.....
private
lpb:TPROGRESSBAR;
lcurpos:integer;
lallpos:integer;
....
CONSTRUCTOR ......CREATE(PB:Tprogressbar; curpos:integer; allpos:integer);
..........
CONSTRUCTOR ......CREATE(PB:Tprogressbar; curpos:integer; allpos:integer);
begin
lpb:=pb
lcurpos:=curpos;
lallpos:=allpos;
freeonterminated:=true;
inherited;
end;
.....unit1;
.....
将线程中的变量与窗体控件关联,剩下的看你了。
呵呵~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
我是低受
ppppppppppppppppppppppppppppppppppppppp
进行数据的查询?我做过一个数据的查询,把查询分成2个分别存到2个临时表里然后在union起来。用2个,用3个时候效率好象就不是很好了!