procedure TForm1.frxReport1Preview(Sender: TObject);
var filename:string;
begin
TRY
filename:=ExtractFilePath(Paramstr(0))+'fhclPict\'+cspc+'.wmf';
chart1.SaveToMetafile(filename) ;
//添加至报表中
(frxreport1.FindObject('cspicture') as Tfrxpictureview ).Picture.LoadFromFile(filename);//程序运行至此行就出现下图所示错误提示
EXCEPT
END;请问各位老大,此语句运行还有何未声明或不当的地方吗?
var filename:string;
begin
TRY
filename:=ExtractFilePath(Paramstr(0))+'fhclPict\'+cspc+'.wmf';
chart1.SaveToMetafile(filename) ;
//添加至报表中
(frxreport1.FindObject('cspicture') as Tfrxpictureview ).Picture.LoadFromFile(filename);//程序运行至此行就出现下图所示错误提示
EXCEPT
END;请问各位老大,此语句运行还有何未声明或不当的地方吗?
(frxreport1.FindObject('cspicture') as Tfrxpictureview ).Picture.LoadFromFile(filename);
虽说不报错了,但也没有图片了呀,
说明,一直就是NIL值
var
Stream : TMemoryStream;
JpgPath : string;
t1 : TfrxPictureView;
begin
if (VarIsNull(qMasterfReport.Value)) or (qMasterfReport.Value = '') then
begin
ShowMessage(你选择的报表没有内容!);
Exit;
end
else
begin
//引入报表
Stream := TMemoryStream.Create;
TBlobField(qMaster.FieldByName('fReport')).SaveToStream(Stream);
Stream.Position := 0;
frxReport1.LoadFromStream(Stream);
Stream.Free;
//引入图表
JpgPath := SysPath + '\Temp.bmp';
t1 := TfrxPictureView(frxReport1.FindObject('Picture1'));
if t1 <> nil then t1.Picture.LoadFromFile(JpgPath);
//预览报表
frxReport1.ShowReport;
end;
end;