谢谢jjwwang,问题已经解决,我采用了frxPreview1的MouseWheelScroll方法,修改你的代码如下:
procedure TForm1.WndProc(var Message: TMessage);
begin
if (Message.Msg=WM_MOUSEWHEEL) then
begin
if Message.wparam<0 then
frxpreview1.MouseWheelScroll (-1) //下移
else
frxpreview1.MouseWheelScroll (1); //上移
end;
inherited WndProc(Message);
end;
{$R *.dfm}
procedure TForm1.WndProc(var Message: TMessage);
begin
if (Message.Msg=WM_MOUSEWHEEL) then
frxPreview1.Next; //根据要求写代码.
inherited WndProc(Message);
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
frxPreview1.Report.ShowReport(true);
end;