LEADTOOLS Raster imaging C++ Class library help
| LEADTOOLS Raster Imaging C++ Class Library Help > Classes and Member Functions > LAnnotation > LAnnotation Member Functions > LAnnotation::Rotate |
#include "ltwrappr.h"
virtual L_INT LAnnotation::Rotate(dAngle, pCenter, uFlags=0)
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L_DOUBLE dAngle; |
/* angle of rotation */ |
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pANNPOINT pCenter; |
/* pointer to the ANNPOINT structure */ |
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L_UINT uFlags; |
/* Flags that determine which objects to process */ |
Rotates the annotation object.
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Parameter |
Description |
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dAngle |
The angle of rotation, expressed in double-precision floating point. |
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pCenter |
Pointer to the ANNPOINT structure that specifies the center of rotation. |
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Pass NULL in this parameter to use the default for each affected object. With the default, if a container is rotated, all objects in it are rotated as a unit, using the container's center as the axis. If an individual object is rotated, it is rotated on its own center. |
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The ANNPOINT structure is like a Windows POINT structure, except that it uses double-precision floating point values. |
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Coordinates of an object's points are relative to its container object. The coordinates are interpreted using the container's scaling factors and offsets, which are described in Low-Level Coordinate System for Annotations. |
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uFlags |
Flags that determine which objects to process. Most of the flags apply only to container objects. You can combine values when appropriate by using a bitwise OR ( | ). The following are valid values: |
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Value |
Meaning |
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0 |
Process only the specified object. |
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ANNFLAG_SELECTED |
[0x0001] Process only objects that have the selected property set to TRUE. For getting and setting the selected property, use the LAnnContainer::GetSelectItems and LAnnotation::SetSelected functions. |
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ANNFLAG_NOTTHIS |
[0x0004] Process only one level of objects within the specified container, not the container itself. If there are containers within the container, they are modified, but the objects within them are not. |
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ANNFLAG_RECURSE |
[0x0008] Process objects within a container, and within any subcontainers, down to any level. |
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ANNFLAG_NOTCONTAINER |
[0x0002] (Used with ANNFLAG_RECURSE) Process objects within containers, not the containers themselves. |
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ANNFLAG_NOINVALIDATE |
[0x0010] Do not invalidate the affected rectangle in the window. Use this to avoid generating unwanted paint messages. |
Returns
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SUCCESS |
The function was successful. |
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< 1 |
An error occurred. Refer to Return Codes. |
Comments
You cannot rotate a Note, HotSpot, Button, or AudioClip. If you rotate a Container that includes these objects, they will move to new positions, but will retain their orientation.
This function applies to multiple and selected objects based on values of the uFlags parameter.
Required DLLs and Libraries
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LTANN For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
Win32, x64.
See Also
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Functions: |
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Topics: |
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Example
For an example, refer to LAnnotation::CutToClipboard.
