35.4 GUI Utility Functions

These functions do not implement a GUI element but are useful when developing programs that do. The functions uiwait, uiresume, and waitfor are only available with the qt or fltk toolkits.

자료 = guidata (h)

guidata (h, 자료)

Query or set user-custom GUI data.

The GUI data is stored in the figure handle h. If h is not a figure handle then it’s parent figure will be used for storage.

자료 must be a single object which means it is usually preferable for it to be a data container such as a cell array or struct so that additional data items can be added easily.

같이 보기: getappdata, setappdata, get, set, getpref, setpref.

hdata = guihandles (h)

hdata = guihandles

Return a structure of object handles for the figure associated with handle h.

If no handle is specified the current figure returned by gcf is used.

The fieldname for each entry of hdata is taken from the "tag" property of the graphic object. If the tag is empty then the handle is not returned. If there are multiple graphic objects with the same tag then the entry in hdata will be a vector of handles. guihandles includes all possible handles, including those for which "HandleVisibility" is "off".

같이 보기: guidata, findobj, findall, allchild.

have_window_system ()

Return true if a window system is available (X11, Windows, or Apple OS X) and false otherwise.

같이 보기: isguirunning.

isguirunning ()

Return true if Octave is running in GUI mode and false otherwise.

같이 보기: have_window_system.

movegui

movegui (h)

movegui (pos)

movegui (h, pos)

movegui (h, 사건)

movegui (h, 사건, pos)

Move a figure specified by figure handle h to a position on the screen defined by pos.

h is a figure handle, or a handle to a graphics object. In the latter case, its parent figure will be used. If unspecified, h will be set to the handle of the relevant figure if a callback is being executed (gcbf), otherwise it will be set to the handle of the current figure (gcf).

pos is either a two-value numeric vector or a string. If pos is numeric then it must be of the form [h, v] specifying the horizontal and vertical offsets of the figure with respect to the screen. A positive value indicates the offset between the left (or bottom for the vertical component) of the screen, and the left (or bottom) of the figure. A negative value indicates the offset between the right (or top) of the screen and the right (or top) of the figure.

Possible values for pos as a string are

north

Top center of the screen.

south

Bottom center of the screen.

east

Right center of the screen.

west

Left center of the screen.

northeast

Top right of the screen.

northwest

Top left of the screen.

southeast

Bottom right of the screen.

southwest

Bottom left of the screen.

center

Center of the screen.

onscreen (default)

The figure will be minimally moved to be entirely visible on the screen, with a 30 pixel extra padding from the sides of the screen. This is the default value if none is provided.

사건 contains event data that will be ignored. This construct facilitates a call to movegui from a callback.

openvar (이름)

Open the variable 이름 in the graphical Variable Editor.

uiwait

uiwait (h)

uiwait (h, timeout)

Suspend program execution until the figure with handle h is deleted or uiresume is 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 uiresume call. 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.

같이 보기: uiresume, waitfor.

uiresume (h)

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 uiwait call pending for the figure with handle h, this function does nothing.

같이 보기: uiwait.

waitfor (h)

waitfor (h, 속성)

waitfor (h, 속성, 값)

waitfor (…, "timeout", timeout)

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 processed normally, allowing callbacks to modify the state of graphics objects. This function is reentrant and can be called from a callback, while another waitfor call is pending at the top-level.

In the first form, program execution is suspended until the graphics object h is destroyed. If the graphics handle is invalid or if h is the root graphics handle and no property 속성 was provided, the function returns immediately.

In the second form, execution is suspended until the graphics object is destroyed or the property named 속성 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 속성 is set to 값. The function isequal is used to compare property values. If the graphics handle is invalid, the property does not exist or the property is already set to 값, 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 '\timeout' instead.

In all cases, typing CTRL-C stops program execution immediately.

같이 보기: waitforbuttonpress, isequal.