DrawObject Class |  |
Provide the base class from which all X# DrawObject objects are subclassed.
Inheritance HierarchyNamespace: VO
Assembly: VOGUIClasses (in VOGUIClasses.dll) Version: 2.21
SyntaxThe DrawObject type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | DrawObject |
Construct a DrawObject object.
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Properties| Name | Description | |
|---|---|---|
 | BoundingBox |
A bounding box representing the smallest rectangle (in the owner window's canvas coordinates) which encloses this DrawObject object.
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| Origin |
A point representing the origin of this DrawObject object in canvas coordinates.
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| RasterOperation |
A constant, indicating the raster operation in use for this DrawObject object:
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| Size |
A dimension representing the size of this DrawObject object.
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Methods| Name | Description | |
|---|---|---|
| Destroy |
Provide a method to de-instantiate a DrawObject object.
(Overrides Destroy.) |
| Draw |
Display a DrawObject object.
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| Handle |
Return the handle for a DrawObject object.
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| HitTest |
Determine if a given point lies within the bounding box of a DrawObject object.
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Fields
Remarks
The DrawObject class provides a protocol for drawable objects (for example, the Window class invokes DrawObject's methods to manage a drawable object). This protocol provides a means to maintain arrays of drawing objects for subsequent display on a window.
Each object in the DrawObject hierarchy should provide both a BoundingBox property (to identify the smallest area that can enclose the drawing object) and a Draw() method (to specify how the object is to be drawn). When the application is finished with the object, it must be explicitly destroyed using the Destroy() method.
See Also