Hi all, I think I am trying to go about setting the transparency and fill color of a TPad in the wrong way. The problem I am trying to solve is to highlight a small section of a scatterplot. The area of the scatterplot I want to highlight represents a cut. My first attempt to do this was to put a TPad on top of the scatterplot and set the TPad's transparency to 4050 (i.e. semi-transparent) and its fill color to 2 (i.e. red). I did this as follows: myPad->SetFillStyle( 4050 ); myPad->SetFillColor( 2 ); myPad->Modified(); myPad->Update(); The last two commands (i.e. the calls to Modified and Update) don't do anything from the command line. I have to use the SetFillAttributes context menu of myPad to set the fill color to red by clicking the Apply button. Is this right? Isn't there a way to do this from the command line? It appears that only one of these settings (i.e. transparency and fill color) can take affect at the same time, i.e. I can either have a semi-transparent TPad that has no color (so that I can see the scatterplot points below it), a solid red TPad (that hides the scatterplot points beneath it), but not both. So, is it possible to set the transparency and the fill color of a TPad simultaneously? If so, is there a way to do it from the command line? Also, is this the right way to highlight a section of a scatterplot? Would it be better to use something like a TBox or a TWbox instead? Thank you for any help. Regards, Matt -- Matthew D. Langston SLD, Stanford Linear Accelerator Center langston@SLAC.Stanford.EDU
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