listview 如何去掉背景图

Question

我把图片画在了背景上,现在怎么去掉它?{载入Listview背景}
procedure LoadListViewBackBmp(ListView: TListView; Bmp: TBitMap);
begin
  //ListView.Color := clNone;
  ListView.Brush.Style := bsclear;
  ZoomImage(Bmp, ListView.Width, ListView.Height);//这里进行缩放图片
  ListView.Canvas.Draw(0, 0, Bmp);
  SetBkMode(ListView.Canvas.handle, TRANSPARENT);
  ListView.Perform(LVM_SETTEXTBKCOLOR, 0, longint(CLR_NONE));
  ListView_SetBKColor(ListView.handle, CLR_NONE);
end;载入用了如上函数.请问如何才能去掉背景..要动态去除.

Answer 1

这样行不行：
listview.canvas.brush.style:=bsclear;
listview.canvas.brush.color:=clwhite;
listview.canvas.pen.style:=psclear;
listview.rectangle(listview.clientRect);
listview1.invalidate;

Answer 2

listview1.Canvas.Rectangle(listview1.ClientRect);