Problem regarding TCanvas

Dear Rooters

I have drawn 4 pads in 1 canvas and all 4 graphs have showing same property i.e. same X-axix/Y-axix co-ordinate.
Plz. tell me how to put the title at the top centre of the canvas. Because I want to write only one title for all the pads.
And how to set one X-axix/Y-axix title at the bottom centre of the canvas since all the 4
pads have the same X-axis/Y-axix title.
And also how to set ticks for all 4 plots.
If anyone helps,that will be really helpful for me.

Best regards.

To draw global titles use TLatex and place the text where you want.
To define common tick marks have a look at: