LImageViewerCell::AnnotationCallBack

#include "ltwrappr.h"

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

HWND hCellWnd;	handle to the cell window
L_UINT uMessage;	message
L_INT nX;	X mouse position
L_INT nY;	Y mouse position
L_INT nCellIndex;	index of the affected cell
L_INT nSubCellIndex;	index into the image list attached to the cell

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

Parameter	Description
hCellWnd	A handle to the window that represents the Medical Viewer Cell.
uMessage	Value that represents the message from the mouse. Possible values are: WM_LBUTTONDOWN WM_LBUTTONUP WM_MBUTTONDOWN WM_MBUTTONUP WM_MOUSEMOVE WM_RBUTTONDOWN WM_RBUTTONUP
nX	A Value that represents the X position of the cursor.
nY	A Value that represents the Y position of the cursor.
nCellIndex	Index of the cell that contains the sub-cell that annotation object
nSubCellIndex	Index of the sub-cell that contains that annotation object.

Returns

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; 
}

Help Version 19.0.2017.10.27

LEADTOOLS Medical Image Viewer C++ Class Library Help

Introduction

Version History

Getting Started with Image Viewer Features

Redistributables/Files To Be Included With Your Application

Quick Reference

Classes and Member Functions

Functions:	LImageViewerCell::EnableLowMemoryUsageCallBack, LImageViewerCell::RegionCallBack, LImageViewerCell::EnableRegionCallBack, LImageViewerCell::MouseCallBack, LImageViewerCell::ActionCallBack, LImageViewerCell::TagCallBack, LImageViewerCell::EnableTagCallBack, LImageViewerCell::EnableAnnotationCallBack, LImageViewerCell::EnableAnnotationCreatedCallBack, LImageViewerCell::PrePaintCallBack, LImageViewerCell::EnablePrePaintCallBack, LImageViewerCell::EnablePostPaintCallBack, LImageViewerCell::PostPaintCallBack, Class Members
Topics:	Image Viewer Cells
	Image Viewer Functions: Image Viewer Cells
	Image Viewer Functions: Callbacks