Re: BuildLegend and gPad

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();
> }
>
>
> On Dec 7, 2011, at 9:43 AM, Andrea Massironi wrote:
>

>>  TH1F h1("h1","h1",100,-2,2);
>>  TH1F h2("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();