These functions do not implement a GUI element but are useful when developing
programs that do. Warning: The functions
waitfor are only available for the FLTK tooolkit.
Suspend program execution until the figure with handle h is deleted or
uiresumeis called. When no figure handle is specified, this function uses the current figure.
If the figure handle is invalid or there is no current figure, this functions returns immediately.
When specified, timeout defines the number of seconds to wait for the figure deletion or the
uiresumecall. The timeout value must be at least 1. If a smaller value is specified, a warning is issued and a timeout value of 1 is used instead. If a non-integer value is specified, it is truncated towards 0. If timeout is not specified, the program execution is suspended indefinitely.
Resume program execution suspended with
uiwait. The handle h must be the same as the on specified in
uiwait. If the handle is invalid or there is no
uiwaitcall pending for the figure with handle h, this function does nothing.
See also: uiwait.
Suspend the execution of the current program until a condition is satisfied on the graphics handle h. While the program is suspended graphics events are still being processed normally, allowing callbacks to modify the state of graphics objects. This function is reentrant and can be called from a callback, while another
waitforcall is pending at top-level.
In the first form, program execution is suspended until the graphics object h is destroyed. If the graphics handle is invalid, the function returns immediately.
In the second form, execution is suspended until the graphics object is destroyed or the property named prop is modified. If the graphics handle is invalid or the property does not exist, the function returns immediately.
In the third form, execution is suspended until the graphics object is destroyed or the property named prop is set to value. The function
isequalis used to compare property values. If the graphics handle is invalid, the property does not exist or the property is already set to value, the function returns immediately.
An optional timeout can be specified using the property
timeout. This timeout value is the number of seconds to wait for the condition to be true. timeout must be at least 1. If a smaller value is specified, a warning is issued and a value of 1 is used instead. If the timeout value is not an integer, it is truncated towards 0.
To define a condition on a property named
timeout, use the string
In all cases, typing CTRL-C stops program execution immediately.
See also: isequal.