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#### 15.3.3.14 Uicontrol Properties

The `uicontrol` properties are:

`__modified__`: `"off"` | {`"on"`}
`backgroundcolor`: def. `[0.93725 0.92157 0.90588]`
`beingdeleted`: {`"off"`} | `"on"`
`busyaction`: `"cancel"` | {`"queue"`}
`buttondownfcn`: string | function handle, def. `[](0x0)`

  For information on how to write graphics listener functions see Callbacks section.

`callback`: def. `[](0x0)`
`cdata`: def. `[](0x0)`
`children` (read-only): vector of graphics handles, def. `[](0x1)`

  Graphics handles of the uicontrol’s children.

`clipping`: `"off"` | {`"on"`}

  If `clipping` is `"on"`, the uicontrol is clipped in its parent axes limits.

`createfcn`: string | function handle, def. `[](0x0)`

  Callback function executed immediately after uicontrol has been created. Function is set by using default property on root object, e.g., `set (0, "defaultuicontrolcreatefcn", 'disp ("uicontrol created!")')`.

  For information on how to write graphics listener functions see Callbacks section.

`deletefcn`: string | function handle, def. `[](0x0)`

  Callback function executed immediately before uicontrol is deleted.

  For information on how to write graphics listener functions see Callbacks section.

`enable`: `"inactive"` | `"off"` | {`"on"`}
`extent` (read-only): def. `[0 0 0 0]`
`fontangle`: `"italic"` | {`"normal"`} | `"oblique"`
`fontname`: def. `"*"`
`fontsize`: def. `10`
`fontunits`: `"centimeters"` | `"inches"` | `"normalized"` | `"pixels"` | {`"points"`}
`fontweight`: `"bold"` | `"demi"` | `"light"` | {`"normal"`}
`foregroundcolor`: def. `[0 0 0]`
`handlevisibility`: `"callback"` | `"off"` | {`"on"`}

  If `handlevisibility` is `"off"`, the uicontrol’s handle is not visible in its parent’s "children" property.

`hittest`: `"off"` | {`"on"`}
`horizontalalignment`: {`"center"`} | `"left"` | `"right"`
`interruptible`: `"off"` | {`"on"`}
`keypressfcn`: def. `[](0x0)`
`listboxtop`: def. `1`
`max`: def. `1`
`min`: def. `0`
`parent`: graphics handle

  Handle of the parent graphics object.

`position`: def. `[0 0 80 30]`
`selected`: {`"off"`} | `"on"`
`selectionhighlight`: `"off"` | {`"on"`}
`sliderstep`: def. `[0.010000 0.100000]`
`string`: def. `""`
`style`: `"checkbox"` | `"edit"` | `"frame"` | `"listbox"` | `"popupmenu"` | {`"pushbutton"`} | `"radiobutton"` | `"slider"` | `"text"` | `"togglebutton"`
`tag`: string, def. `""`

  A user-defined string to label the graphics object.

`tooltipstring`: def. `""`
`type` (read-only): string

  Class name of the graphics object. `type` is always `"uicontrol"`

`uicontextmenu`: graphics handle, def. `[](0x0)`

  Graphics handle of the uicontextmenu object that is currently associated to this uicontrol object.

`units`: `"centimeters"` | `"characters"` | `"inches"` | `"normalized"` | {`"pixels"`} | `"points"`
`userdata`: Any Octave data, def. `[](0x0)`

  User-defined data to associate with the graphics object.

`value`: def. `0`
`verticalalignment`: `"bottom"` | {`"middle"`} | `"top"`
`visible`: `"off"` | {`"on"`}

  If `visible` is `"off"`, the uicontrol is not rendered on screen.

Next: Uitoolbar Properties, Previous: Uipanel Properties, Up: Graphics Object Properties [Contents][Index]