////////// THE MOUSE IS WATCHED BY:
void CChildView::OnLButtonDown(UINT nFlags, CPoint point) {
	TObject *sel;
	CString cStat = "";
	if (fCanvas) {
		fCanvas->HandleInput(kButton1Down, point.x, point.y);
		sel = gPad->GetSelected();
		CString cThisClass = sel->ClassName();
		if (HistNumber() >= 0) 
			cStat = cThisClass + " " + sel->GetObjectInfo(point.x,point.y);
	}
	CWnd::OnLButtonDown(nFlags, point);
	if ((cStat != "")&& iDebug) AfxMessageBox(cStat);
}

////////// WHERE PADS ARE CHECKED BY:
int CChildView::HistNumber() {
	int ii = 0;
	char cThisPad[40];
	strncpy(cThisPad, fCanvas->GetSelected()->GetName(), sizeof(cThisPad));
	if (strncmp(cThisPad, "fCanvas_", 8) == 0)
		ii = atoi(&cThisPad[8]);
	return ii;
}

////////// HISTOGRAMS ARE DRAW BY:
void CChildView::BuildPlot(int iLoc) { 
	char cFormat[150];
	char cX[10], cY[10], cXY[10];
	char cAxis[50] = "100,,";
	int iParmX = GetXDef(iLoc-1);
	int iParmY = GetYDef(iLoc-1);
	TH1F *hHist;
	TH2F *hDots;

	fCanvas->cd(iLoc);
	if ((iParmY < 0) && (iParmX >= 0)) { //show histogram
		sprintf(cX, "cX%d", iLoc);
		sprintf(cFormat, "%s>>%s(%s)", &cRootTxt[iParmX][0], cX, cAxis);
		fTree->Draw(cFormat,"","");
	}
	else { //dot plot 
		if ((iParmY >= 0) && (iParmX >= 0)) {
			sprintf(cXY, "cXY%d", iLoc);
			sprintf(cFormat, "%s:%s>>%s(%s,%s)",
				&cRootTxt[iParmY][0], &cRootTxt[iParmX][0], cXY, cAxis, cAxis);
			fTree->Draw(cFormat,"","COL");
		}
	}
}
 
////////// ON A CANVAS SPLIT BY:
void CChildView::BuildRootCanvas() {
	RECT rect;
	GetWindowRect(&rect);
	int width  = rect.right-rect.left;
	int height = rect.bottom-rect.top;
	int wid = gVirtualX->AddWindow((ULong_t)m_hWnd, width, height);

	GetProto(); // load setup parameters
	fCanvas = new TCanvas("fCanvas", width, height, wid);
	fCanvas->SetFillColor(10);
	fCanvas->SetBorderMode(0);
	fCanvas->SetSupportGL(kTRUE);
	fCanvas->SetTitle("Gigasort Data Frame");
	gStyle->SetPalette(1);
	gStyle->SetOptStat(0); //turn off stats globally
	fCanvas->Divide(4,2,0.0005,.0005); //size doesn't matter...
	fCanvas->Update();
}