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The Next window command returns the window reference number of the window “behind” the window you pass in window (based on the front-to-back order of the windows).
Frontmost window
Product: 4D Theme: Windows Number: 448
Created: 4D v6
4D Language Reference ( 4D v20) 4D Language Reference ( 4D v20.1) 4D Language Reference ( 4D v20.2) 4D Language Reference ( 4D v20.3) 4D Language Reference ( 4D v20.4) 4D Language Reference ( 4D v20.5) 4D Language Reference ( 4D v20.6)