L_AnnGetAngle (original) (raw)
Summary
Gets the angle of the Protractor object in the object's unit of measurement, set by L_AnnSetProtractorOptions.
Syntax
#include "l_bitmap.h"
L_LTANN_API L_INT L_AnnGetAngle(hObject, pdAngle)
Parameters
HANNOBJECT hObject
Handle to the annotation object.
L_DOUBLE *pdAngle
Address of a variable to be updated with the angle of the protractor object specified in hObject.
Returns
| Value | Meaning |
|---|---|
| SUCCESS | The function was successful. |
| < 1 | An error occurred. Refer to Return Codes. |
Comments
This function is only valid for Protractor annotation objects (ANNOBJECT_PROTRACTOR).
Required DLLs and Libraries
- 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.
Platforms
Win32, x64.
See Also
Functions
Topics
- Annotation Functions: Object Properties
- Implementing Annotations
- Automated User Interface for Annotations
- Implementing an Automated Annotation Program
- Obtaining Annotation Object Information
Example
L_INT EXT_CALLBACK annAngleCallback(HANNOBJECT hObject, L_VOID* pUserData);
extern "C" L_INT AnnGetAngleExample(HANNOBJECT hContainer /* Container annotation object */)
{
return L_AnnEnumerate(hContainer, annAngleCallback, NULL, ANNFLAG_RECURSE | ANNFLAG_NOTCONTAINER, NULL);
}
L_INT EXT_CALLBACK annAngleCallback(HANNOBJECT hObject, L_VOID* pUserData)
{
UNREFERENCED_PARAMETER(pUserData);
L_INT nRet;
L_DOUBLE dAngle;
L_UINT Type;
L_TCHAR cs[256];
L_SIZE_T uAbbrevLen = 0;
L_TCHAR* pszAbbrev = NULL;
nRet = L_AnnGetType(hObject, &Type);
if (nRet != SUCCESS)
return nRet;
if (Type != ANNOBJECT_PROTRACTOR)
{
_tprintf(_T("%s"), TEXT("This object is not a protractor."));
return FAILURE;
}
uAbbrevLen = 0;
pszAbbrev = NULL;
nRet = L_AnnGetAngle(hObject, &dAngle);
if (nRet != SUCCESS)
return nRet;
nRet = L_AnnGetProtractorOptions(hObject, NULL, NULL, &uAbbrevLen, NULL, NULL, NULL);
if (nRet != SUCCESS)
return nRet;
pszAbbrev = (L_TCHAR*)malloc(uAbbrevLen * (sizeof(L_TCHAR) + 1));
nRet = L_AnnGetProtractorOptions(hObject, NULL, NULL, &uAbbrevLen, pszAbbrev, NULL, NULL);
if (nRet != SUCCESS)
return nRet;
_stprintf_s(cs, TEXT("Results: The angle is %f %s.\n"), dAngle, pszAbbrev);
_tprintf(_T("%s"), cs);
free(pszAbbrev);
return SUCCESS;
}
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