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WinScrollV |
Function (ROM Call 0x24) |
Scrolls a region of a window upwards or downwards.
WinScrollV scrolls the rectangular area determined by rect of the window
pointed to by w upwards by NumRows pixels (or downwards
if NumRows < 0). The coordinates in rect are relative
to the topleft corner od the window. Blank areas (i.e. the vacant space produced after
scrolling) are filled with current background for the window (see
WinBackground).
Note: This command is not very fast because it is realized using
WinBitmapGet and WinBitmapPut.
Uses: WinToScr, ClientToScr, PortRestore, ScrRectOverlap, ScrRectScroll, ROM Call 0x413
Used by: cmd_disp, cmd_input, cmd_inputstr, cmd_output, cmd_pause, cmd_prompt, EV_defaultHandler, TE_handleEvent, EV_quit