This callback function is called every time the user creates on an annotation object.
#include "ltwrappr.h"
virtual L_INT LImageViewerCell::AnnotationCreatedCallBack(nCellIndex, nSubCellIndex, uAnnotationType)
A zero-based index of the cell that contains the annotation object.
A zero-based index of the sub-cell that contains that annotation object.
Flag that determines the type of the currently selected annotation object. Possible values are:
Value | Meaning |
---|---|
ANNOBJECT_TEXT | [15] Text annotation object. |
ANNOBJECT_RECT | [12] Rectangle annotation object. |
ANNOBJECT_ELLIPSE | [4] Ellipse annotation object. |
ANNOBJECT_HILITE | [6] Highlight annotation object. |
ANNOBJECT_PROTRACTOR | [20] Protractor annotation object. |
ANNOBJECT_RULER | [17] Ruler annotation object. |
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
In order to use this callback function, it must first be set by calling the LImageViewerCell::EnableAnnotationCreatedCallBack function.
This example converts the annotation object (rectangle, ellipse and hilite) into a region once the user draws them
#ifdef LImageViewerChild
class LImageViewerChild :public LImageViewerCell
{
virtual L_INT AnnotationCreatedCallBack(L_INT nCellIndex,
L_INT nSubCellIndex,
L_UINT uAnnotationType);
};
#endif
L_INT LImageViewerChild::AnnotationCreatedCallBack(L_INT nCellIndex,
L_INT nSubCellIndex,
L_UINT uAnnotationType)
{
UNREFERENCED_PARAMETER(nCellIndex);
switch(uAnnotationType)
{
case ANNOBJECT_RECT:
case ANNOBJECT_ELLIPSE:
case ANNOBJECT_HILITE:
AnnToRgn(nSubCellIndex, L_RGN_OR, TRUE, 0);
break;
}
return SUCCESS;
}
L_INT LImageViewer_AnnotationCreatedCallbacksExample(LImageViewerCell& ImageViewerCell)
{
ImageViewerCell.EnableAnnotationCreatedCallBack(TRUE);
return SUCCESS;
}