Re: BuildLegend and gPad

Thank you to everybody!

My only remaining curiosity is why in the previous releases it worked.

In the previous ROOT release*, gPad (the class TVirtualPad) had the method BuildLegend (for example using tab completion of "gPad->" I could see "BuildLegend", while now it doesn't).

Thanks,

     Andrea

• I tried with tags/v5-30-00_at_40062

On 12/08/2011 02:34 PM, Philippe Canal wrote:
> Hi,
>
> The problem is not really about CINT.
> It strictly due to the fact that TVirtualPad (the type pointed to by
> gPad)
> does *not* have a BuildLegend member function.
>
> Cheers,
> Philippe.
>
>
>
> On 12/8/11 4:45 AM, Axel Naumann wrote:
>> Hi Olivier,
>>
>> How's that CINT-related? I don't see any TVirtualPad::BuildLegend().
>> Should it be added?
>>
>> Cheers, Axel.
>>
>>
>> Olivier Couet wrote on 12/07/2011 09:55 AM:
>>> I see the same behavior on my Mac.
>>> Seems to me it is CINT related as the message tells that BuildLegend
>>> cannot be called.
>>>
>>> I would also recommend you create your histograms with "new" as you
>>> are using "->"
>>> to access the Draw(0 method:
>>>
>>> void buildlegend()
>>> {
>>> TH1F *h1 = new TH1F("h1","h1",100,-2,2);
>>> TH1F *h2 = new TH1F("h2","h2",100,-2,2);
>>>
>>> h1->FillRandom("gaus",10000);
>>> h2->FillRandom("gaus",10000);
>>>
>>> h1->SetLineColor(kRed);
>>> h2->SetLineColor(kBlue);
>>>
>>> TCanvas* cc = new TCanvas ("cc","cc",400,400);
>>> h1->Draw();
>>> h2->Draw("same");
>>>
>>> TLegend* leg = cc->BuildLegend();
>>> leg->SetFillColor(kWhite);
>>> cc->SetGrid();
>>> }
Received on Thu Dec 08 2011 - 15:09:34 CET