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LImageViewerCell::AnnotationCallBack

Summary

This callback function is called every time the user clicks on an annotation object.

Syntax

#include "ltwrappr.h"

virtual L_INT LImageViewerCell::AnnotationCallBack(hCellWnd, uMessage, nX, nY, nCellIndex, nSubCellIndex)

Parameters

HWND hCellWnd

A handle to the window that represents the Medical Viewer Cell.

L_UINT uMessage

Value that represents the message from the mouse. Possible values are:WM_LBUTTONDOWNWM_LBUTTONUPWM_MBUTTONDOWNWM_MBUTTONUPWM_MOUSEMOVEWM_RBUTTONDOWNWM_RBUTTONUP

L_INT nX

A Value that represents the X position of the cursor.

L_INT nY

A Value that represents the Y position of the cursor.

L_INT nCellIndex

Index of the cell that contains the sub-cell that annotation object

L_INT nSubCellIndex

Index of the sub-cell that contains that annotation object.

Returns

Value	Meaning
SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

In order to use this callback function, it must first be set by calling LImageViewerCell::EnableAnnotationCreatedCallBack function.

Required DLLs and Libraries

LTIVW
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Example

This example will convert the rectangle, ellipse or hilite annotation into region once the user clicks on them.

#ifdef LImageViewerChild  
class LImageViewerChild :public LImageViewerCell 
 
{ 
   virtual L_INT AnnotationCallBack(HWND hCellWnd, 
                                    L_UINT   uMessage, 
                                    L_INT    nX, 
                                    L_INT    nY, 
                                    L_INT    nCellIndex, 
                                    L_INT    nSubCellIndex); 
 
}; 
#endif 
 
L_INT LImageViewerChild ::AnnotationCallBack(HWND hCellWnd, 
                                             L_UINT   uMessage, 
                                             L_INT    nX, 
                                             L_INT    nY, 
                                             L_INT    nCellIndex, 
                                             L_INT    nSubCellIndex) 
{ 
   UNREFERENCED_PARAMETER(hCellWnd); 
   UNREFERENCED_PARAMETER(nCellIndex); 
   UNREFERENCED_PARAMETER(nX); 
   UNREFERENCED_PARAMETER(nY); 
   UNREFERENCED_PARAMETER(uMessage); 
 
   DISPCONTAINERANNATTRIBS AnnAttrib; 
 
   AnnAttrib.uStructSize = sizeof(DISPCONTAINERANNATTRIBS); 
   GetSelectedAnnotationAttributes(nSubCellIndex, &AnnAttrib, 0); 
 
   switch(AnnAttrib.uType) 
   { 
   case ANNOBJECT_RECT: 
   case ANNOBJECT_ELLIPSE: 
   case ANNOBJECT_HILITE: 
      AnnToRgn(nSubCellIndex, L_RGN_OR, TRUE, 0); 
      break; 
   } 
 
   return SUCCESS; 
} 
 
L_INT LImageViewer_AnnotationCallbacksExample(LImageViewerCell& ImageViewerCell) 
{ 
   ImageViewerCell.EnableAnnotationCallBack(TRUE); 
 
   return SUCCESS; 
}