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GNU Info (gpm.info)MarginsHow margins are managed ======================= Motion and button-press events are constrained to remain within the visible screen. This means that the `x' will be within 1 and 80 and `y' will be within 1 and 25 when the console is 80x25 cells. However, a client can keep track of movements outside the screen, by using the `dx' and `dy' fields, which aren't subject to clipping. The server helps applications in detecting margin conditions by filling the `margin' field. Whenever the pointer tries to cross screen boundaries, it is forced to remain on the border, but a flag is set in `margin'. A different policy is in force for drag and button-release events. In this case the pointer is allowed to go outside the physical screen by exactly one position. This allows, for example, selecting to end of line by dragging down-left. The peculiar situation is nonetheless signaled through the `margin' flags. The client should be careful to fit the values within the screen if needed. Note: Utility Functions. automatically generated by info2www version 1.2.2.9 |