Online Documentation for Advanced Data Export for RAD Studio VCL
TxlsPageSetup.Papersize
property PaperSize: Integer;
Description
The PaperSize property defines the size of the printed page. In the Object Inspector you can set the code number of the page size, in the run-time - the constant value. Constant names can be found in QExport4XLSCommon unit. The default value is iA4 (9).