Unlocks work page's framebuffer
Syntax
Usage
ScreenUnlock [ start_line ] [, end_line ]
Parameters
startline
optional argument specifying first screen line to be updated. If omitted, top screen line is assumed.
endline
optional argument specifying last screen line to be updated. If omitted, bottom screen line is assumed.
Description
ScreenUnlock unlocks the current work page assuming it was previously locked by calling
ScreenLock.
ScreenUnlock must not be called without a previous call to
ScreenLock. This function lets the system restart updating the screen regularly, and when called produces the immediate update of the screen region marked by the given start and end lines.
After
ScreenUnlock is called, all graphics statements may be safely used. Accessing the work page framebuffer directly via
ScreenPtr may only used after locking the screen again with
ScreenLock.
Example
Dialect Differences
- Not available in the -lang qb dialect unless referenced with the alias __Screenunlock.
Differences from QB
See also