Control

xworker.swt.widgets.Control
事物 Control(Control)

描述者：: MetaDescriptor3; thing

继承：: Widget; LayoutDatas

Control is the abstract superclass of all windowed user interface classes.

字段摘要
`String`	`background` Sets the receiver's background color to the color specified by the argument, or to the default system color for the control if the argument is null.
`String`	`backgroundImage` Sets the receiver's background image to the image specified by the argument, or to the default system color for the control if the argument is null.
`String`	`bounds` Sets the receiver's size and location to the rectangular area specified by the arguments.
`String`	`capture` If the argument is `true`, causes the receiver to have all mouse events delivered to it until the method is called with `false` as the argument.
`String`	`cls` 样式名称。
`String`	`cursor` Sets the receiver's cursor to the cursor specified by the argument, or to the default cursor for that kind of control if the argument is null.
`String`	`enabled` Enables the receiver if the argument is `true`, and disables it otherwise.
`String`	`font` Sets the font that the receiver will use to paint textual information to the font specified by the argument, or to the default font for that kind of control if the argument is null.
`String`	`foreground` Sets the receiver's foreground color to the color specified by the argument, or to the default system color for the control if the argument is null.
`String`	`layoutData` Sets the layout data associated with the receiver to the argument.
`String`	`location` Sets the receiver's location to the point specified by the arguments which are relative to the receiver's parent (or its display if its parent is null), unless the receiver is a shell.
`String`	`menu` Sets the receiver's pop up menu to the argument.
`String`	`parent` Changes the parent of the widget to be the one provided if the underlying operating system supports this feature.
`String`	`redraw` If the argument is `false`, causes subsequent drawing operations in the receiver to be ignored.
`String`	`region` Sets the shape of the control to the region specified by the argument.
`String`	`size` Sets the receiver's size to the point specified by the arguments.
`String`	`toolTipText` Sets the receiver's tool tip text to the argument, which may be null indicating that no tool tip text should be shown.
`String`	`varref(变量引用)` 引用上下文中的其他变量。
`String`	`visible` Marks the receiver as visible if the argument is `true`, and marks it invisible otherwise.
`String`	`xw_cl_global(全局变量)` 如果是全局变量，那么它将会放入到动作上下文中的索引为0的变量范围中。
`String`	`xw_cl_namespace(名字空间)` 如果指定了名字空间，那么放入到指定的名字空间中。
`String`	`xw_cl_varName(变量名)` 放入到动作上下文中的变量名称，如果没有则不放入到变量上下文中。

方法摘要
	`addObjectToContext`
	`init` 参数：control

子事物摘要

ControlListener
Classes which implement this interface provide methods that deal with the events that are generated by moving and resizing controls.

DisposeListener
Classes which implement this interface provide a method that deals with the event that is generated when a widget is disposed.

DragDetectListener

`void`	`dragDetected(DragDetectEvent e)`
	`DragSource` `DragSource` defines the source object for a drag and drop transfer.
	`DropTarget` Class `DropTarget` defines the target object for a drag and drop transfer.
	`FocusListener`
	`FormData`
	`GridData`
	`HelpListener`
	`KeyListener`
	`Listeners` SWT通用事件监听。
	`ListenersPrepared` 创建时不注册到控件的事件监听，通常用于多个控件都需要注册的事件监听，可以在创建后由控件增加监听时引用。
	`Menu`
	`MenuDetectListener`
	`MouseListener`
	`MouseMoveListener`
	`MouseTrackListener`
	`MouseWheelListener`
	`PaintListener`
	`RowData` Each control controlled by a `RowLayout` can have its initial width and height specified by setting a `RowData` object into the control.
	`TraverseListener`

字段详细信息

background

Sets the receiver's background color to the color specified by the argument, or to the default system color for the control if the argument is null.

backgroundImage

Sets the receiver's background image to the image specified by the argument, or to the default system color for the control if the argument is null.

bounds

Sets the receiver's size and location to the rectangular area specified by the arguments.

capture

If the argument is true, causes the receiver to have all mouse events delivered to it until the method is called with false as the argument.

cls

样式名称。

目前的样式只是Control的公共属性的集合，可以设置Control的属性，功能仅限SWT的Control。

样式定义在StyleManager下，样式的目的类似HTML中的样式单，即在一个地方定义样式其他地方可以通过引用的方式实现样式的效果。

cursor

Sets the receiver's cursor to the cursor specified by the argument, or to the default cursor for that kind of control if the argument is null.

enabled

Enables the receiver if the argument is true, and disables it otherwise.

font

Sets the font that the receiver will use to paint textual information to the font specified by the argument, or to the default font for that kind of control if the argument is null.

foreground

Sets the receiver's foreground color to the color specified by the argument, or to the default system color for the control if the argument is null.

layoutData

Sets the layout data associated with the receiver to the argument.

location

Sets the receiver's location to the point specified by the arguments which are relative to the receiver's parent (or its display if its parent is null), unless the receiver is a shell.

parent

Changes the parent of the widget to be the one provided if the underlying operating system supports this feature.

redraw

If the argument is false, causes subsequent drawing operations in the receiver to be ignored.

region

Sets the shape of the control to the region specified by the argument.

size

Sets the receiver's size to the point specified by the arguments.

toolTipText

Sets the receiver's tool tip text to the argument, which may be null indicating that no tool tip text should be shown.

varref(变量引用)

引用上下文中的其他变量。

visible

Marks the receiver as visible if the argument is true, and marks it invisible otherwise.

xw_cl_global(全局变量)

如果是全局变量，那么它将会放入到动作上下文中的索引为0的变量范围中。

xw_cl_namespace(名字空间)

如果指定了名字空间，那么放入到指定的名字空间中。

名字空间是放到动作上下文中的全局变量中的，每一个名字空间是一个Map，名字空间可以嵌套，如XWorker.util.file等。注意：需要自行处理名字空间中的变量生命周期。

有一个特殊变量空间是xw_objects，xw_objects的结构是根据创建变量的顺序而产生的树形结构，每一个节点的构成如下：
{
    name: //名字
    id:       //标识
    value: //值，注意这里是软引用，系统垃圾回收后值的内容会消失
    thingEntry: //创建该变量的事物引用实体
    childs:      //下一级子事物列表
}

动作上下文是公用的，本事物的名字前缀是xw_cl_，请注意不要重复。

xw_cl_varName(变量名)

放入到动作上下文中的变量名称，如果没有则不放入到变量上下文中。

方法详细信息

addObjectToContext

init

参数：control

子事物详细信息

ControlListener

Classes which implement this interface provide methods that deal with the events that are generated by moving and resizing controls.

After creating an instance of a class that implements this interface it can be added to a control using the addControlListener method and removed using the removeControlListener method. When a control is moved or resized, the appropriate method will be invoked.

DisposeListener

Classes which implement this interface provide a method that deals with the event that is generated when a widget is disposed.

After creating an instance of a class that implements this interface it can be added to a widget using the addDisposeListener method and removed using the removeDisposeListener method. When a widget is disposed, the widgetDisposed method will be invoked.

see: DisposeListener

FormData

GridData

HelpListener

KeyListener

Listeners

SWT通用事件监听。

通过指定事件的类型调用控件的addListener(int, Listener)方法注册事件监听。

SWT还有另一种事件监听是通过控件的addXXListener(XXLitener)方法注册的，此方法是那种方法不兼容，互相引用无效。

ListenersPrepared

创建时不注册到控件的事件监听，通常用于多个控件都需要注册的事件监听，可以在创建后由控件增加监听时引用。

RowData

Each control controlled by a RowLayout can have its initial width and height specified by setting a RowData object into the control.

xworker.swt.widgets.Control 事物 Control(Control)