| type | string | Yes| Event type.<br>- **add**, indicating the display addition event. Example: event that a display is connected.<br>- **remove**, indicating the display removal event. Example: event that a display is disconnected.<br>- **change**, indicating the display change event. Example: event that the display orientation is changed.|
| callback | Callback<number> | Yes| Callback used to return the ID of the display.|
| callback | Callback<number> | Yes| Callback used to return the ID of the display, which is an integer. |
**Example**
...
...
@@ -279,7 +279,7 @@ Unsubscribes from display changes.
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| type | string | Yes| Event type.<br>- **add**, indicating the display addition event. Example: event that a display is connected.<br>- **remove**, indicating the display removal event. Example: event that a display is disconnected.<br>- **change**, indicating the display change event. Example: event that the display orientation is changed.|
| callback | Callback<number> | No| Callback used to return the ID of the display.|
| callback | Callback<number> | No| Callback used to return the ID of the display, which is an integer.|
**Example**
...
...
@@ -335,7 +335,7 @@ Unsubscribes from privacy mode changes of this display. When there is a privacy
| type | string | Yes | Event type. The value is fixed at **'privateModeChange'**, indicating the event of display private mode changes.|
| type | string | Yes | Event type. The value is fixed at **'privateModeChange'**, indicating the event of display privacy mode changes.|
| callback | Callback<boolean> | No | Callback used to return whether the privacy mode of the display is changed. The value **true** means that the display changes to the privacy mode, and **false** means the opposite.|
**Example**
...
...
@@ -479,22 +479,22 @@ Before calling any API in **Display**, you must use [getAllDisplays()](#displayg
| id | number | Yes| No| ID of the display. The value must be an integer. |
| name | string | Yes| No| Name of the display.|
| alive | boolean | Yes| No| Whether the display is alive.|
| state | [DisplayState](#displaystate) | Yes| No| State of the display.|
| refreshRate | number | Yes| No| Refresh rate of the display. The value must be an integer. |
| rotation | number | Yes| No| Screen rotation angle of the display.<br>The value **0** indicates that the screen of the display rotates by 0°.<br>The value **1** indicates that the screen of the display rotates by 90°.<br>The value **2** indicates that the screen of the display rotates by 180°.<br>The value **3** indicates that the screen of the display rotates by 270°.|
| width | number | Yes| No| Width of the display, in pixels.|
| height | number | Yes| No| Height of the display, in pixels.|
| densityDPI | number | Yes| No| Screen density of the display, that is, the number of dots per inch. Generally, the value is **160** or **480**.|
| orientation<sup>10+</sup> | [Orientation](#orientation10) | Yes| No| Orientation of the display.|
| densityPixels | number | Yes| No| Logical density of the display, which is a scaling coefficient independent of the pixel unit. Generally, the value is **1** or **3**.|
| scaledDensity | number | Yes| No| Scaling factor for fonts displayed on the display. Generally, the value is the same as that of **densityPixels**.|
| xDPI | number | Yes| No| Exact physical dots per inch of the screen in the horizontal direction.|
| yDPI | number | Yes| No| Exact physical dots per inch of the screen in the vertical direction.|
| width | number | Yes| No| Width of the display, in pixels. The value must be an integer. |
| height | number | Yes| No| Height of the display, in pixels. The value must be an integer. |
| densityDPI | number | Yes| No| Screen density of the display, that is, the number of dots per inch. The value must be a floating point number. Generally, the value is **160.0** or **480.0**. |
| orientation<sup>10+</sup> | [Orientation](#orientation10) | Yes| No| Orientation of the display.|
| densityPixels | number | Yes| No| Logical density of the display, which is a scaling coefficient independent of the pixel unit. The value must be a floating point number. Generally, the value is **1.0** or **3.0**. |
| scaledDensity | number | Yes| No| Scaling factor for fonts displayed on the display. The value must be a floating point number. Generally, the value is the same as that of **densityPixels**. |
| xDPI | number | Yes| No| Exact physical dots per inch of the screen in the horizontal direction. The value must be a floating point number. |
| yDPI | number | Yes| No| Exact physical dots per inch of the screen in the vertical direction. The value must be a floating point number. |
| screenRect | [Rect](#rect) | No | Region of the screen to capture. If this parameter is null, the full screen will be captured. |
| imageSize | [Size](#size) | No | Size of the screen region to capture. If this parameter is null, the full screen will be captured. |
| rotation | number | No | Rotation angle of the screenshot. Currently, the value can be **0** only. The default value is **0**. |
| displayId<sup>8+</sup> | number | No | ID of the [display](js-apis-display.md#display) device on which the screen region is to be captured.|
| rotation | number | No | Rotation angle of the screenshot. Currently, the value can be **0** only. The default value is **0**. The value must be an integer. |
| displayId<sup>8+</sup> | number | No | ID of the [display](js-apis-display.md#display) device on which the screen region is to be captured. The value must be an integer.|
## Rect
...
...
@@ -37,10 +37,10 @@ Describes the region of the screen to capture.
