void test_pad()
{
	TGMainFrame* mf = new TGMainFrame(gClient->GetRoot(), 100, 100);
	mf->SetCleanup(kDeepCleanup);
	
	gStyle->SetCanvasPreferGL();//NEEDED for fast drawing.
	gStyle->SetOptStat(0);
	gStyle->SetNumberContours(255);//2D
	gStyle->SetPadTopMargin(0.);
	gStyle->SetPadRightMargin(0.);
	gStyle->SetPadBottomMargin(0.);
	gStyle->SetPadLeftMargin(0.);
	
	TRootEmbeddedCanvas* fCanvas = new TRootEmbeddedCanvas("c",mf,600,600);
		
	mf->AddFrame(fCanvas, new TGLayoutHints(kLHintsExpandX | kLHintsExpandY, 2, 2, 2, 2));
	
	mf->SetWindowName("testpad");
	mf->MapSubwindows();
	mf->Resize(mf->GetDefaultSize());
	mf->MapWindow();
	
	TImage* fWater = TImage::Open("water.jpg");
	fWater->Draw("X");
	
	TPad *p = new TPad("p","p",0.2,0.2,0.8,0.8);
	p->SetFillStyle(4000);
	p->SetFrameFillStyle(4000);
	p->Draw();
	p->cd();
	TImage *img = TImage::Open("chili.png");
	img->Draw();
}