InkRecognizerGuide Class
InkRecognizerGuide Class |
Represents the area that the recognizer uses in which ink can be drawn. The area is known as the recognizer guide.
Members
| Property | Description |
|---|---|
| Columns | Gets or sets the number of columns in the guide box. |
| DrawnBox | Gets or sets the box that is physically drawn on the tablet's screen and in which writing takes place. |
| GuideData | Gets or sets guide data for C++ developers. |
| Midline | Gets or sets the midline height. The midline height is distance from the baseline to the midline, of the drawn box. |
| Rows | Gets or sets the number of rows in the guide box. |
| WritingBox | Gets or sets the invisible writing area of the guide box in which writing can actually take place. |
Remarks
This object can be instantiated by calling the CoCreateInstance method in C++ or by using the New keyword in Microsoft® Visual Basic® 6.0.
The recognizer guide can consist of rows and columns, and gives the recognizer a better context in which to perform recognition. For example, you can draw horizontal lines on a users screen, almost like a ruled piece of paper, that show where inking should occur (this type of guide would consist only of rows, and no columns). If a user writes on the lines, instead of some arbitrary space, recognition accuracy improves.
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The following figure shows a recognizer guide with four columns.
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Letters such as "t" and "I" are more easily recognized when a guide is used to give context to the ink.
The guide specifies the boundaries of the ink in ink space coordinates. The DrawnBox property can define a box which is the same size as or smaller than the box defined by the WritingBox property.
If the application has drawn guidelines on the screen on which the user is expected to write, the application should set the values of the properties of the recognizer guide to inform the recognizer. These properties are for the recognizer's use only. Setting them does not, by itself, draw visual clues on the display. The application or the control draws the visual clues.
In addition to drawing lines, or rules, on the screen that show users where to write, it is also possible to draw cells on the screen in which characters or words are written. This is called boxed input and is useful with some Asian languages. To determine if the recognizer is capable of boxed input, call the Capabilities property of the IInkRecognizer object.
By default, there is no guide. A default guide has all property values set to 0. You must use the properties of this object to set the guide.
COM Implementation
This object implements the IInkRecognizerGuide COM interface.