Subdivide a divided canvas

ROOT
1

Dear all,
I would like to have a canvas divided into 2 as described in the code,

  1. subdivide further the first half into four equal parts
  2. maintain the size of the second half
int createSomething()  {

	//canvas creation
	Double_t w = 2000;
	Double_t h = 2000;	
	TCanvas *c1 = new TCanvas("c","c1",w,h);
	c->SetWindowSize( w+(w-c->GetWw()), h+(h-c->GetWh()) );
	c->Divide(2,1);
	
	c->cd(1);
		//divide it to four equal parts 2x2, how does one do it??
	
	c->cd(2);
		//maintain this

	return 0;
}

Thanks!

2

subdivide pad 1 of the “c” canvas …
c->cd(1); gPad->Divide(2, 2);

then always …
c->cd(1); gPad->cd(i); // i = 1 … 4 (4 = 2 * 2)

see also: TPad::cd