LAnnProtractor::EnumHandleCallBack
#include "ltwrappr.h"
virtual L_INT LAnnProtractor::EnumHandleCallBack(hObject, pHandleInfo)
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HANNOBJECT hObject; |
/* handle to the annotation object */ |
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pANNHANDLEINFO pHandleInfo; |
/* pointer to structure containing information about the annotation object handle */ |
Processes each annotation object from the LAnnProtractor::EnumerateHandles function.
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Parameter |
Description |
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hObject |
Handle of the annotation object being processed. |
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pHandleInfo |
Pointer to structure that contains information about the annotation object handle. |
Returns
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Value |
Meaning |
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SUCCESS_CHANGE |
[1] Change the object |
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SUCCESS_NOCHANGE |
[2] Do not change the object |
Comments
The LAnnProtractor::EnumerateHandles function calls your callback function for each handle of a single annotation object.
The pHandleInfo structure can be used to obtain detailed information about an annotation object handle. It can also be used to change some (but not all) of the properties of a user handle. All properties of an annotation object handle can be changed EXCEPT the location. The properties of a node that can be changed with this function are:
ID
Visibility
Pen color
Fill color
Shape
Cursor
To change the location of a user-defined node, use LAnnProtractor::ChangeUserHandle.
To change the properties of an annotation object handle, set the corresponding field in the pHandleInfo structure, and return SUCCESS_CHANGED. To leave the handle properties unchanged, return SUCCESS_UNCHANGED.
To enable the LAnnProtractor::EnumHandleCallBack you must call LBase::EnableCallBack before calling LAnnProtractor::EnumerateHandles function.
For more information, refer to the documentation for ANNHANDLEINFO.
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. |
See Also
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Functions: |
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Topics: |
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Example
For an example, refer to LAnnProtractor::EnumerateHandles.