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grad.C File Reference
Tutorials » OpenGL tutorials

Detailed Description

This macro demonstrates how to create and use linear gradients to fill a histogram or a pad.

To use this macro you need OpenGL enabled in pad: either set OpenGL.CanvasPreferGL to 1 in $ROOTSYS/etc/system.rootrc; or call gStyle->SetCanvasPreferGL(kTRUE); before canvas created.

Definition in file grad.C.