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Get substring of existing string
TString new = old(start, subStrLength); // start is the index of the first character // subStrLength is the number of characters to copy // e.g: remove S charachters form start and E from end TString histName = filename(S, filename.Length()-S-E);
Combine some variables with a static Text
TString string = Form("My Number is %d", number);
If your variable is a TString, you need to convert it first
TString string = Form("My TString is %s", (char*) tstring);
The function follows printf-syntax