Creates a cobb-angle, which is a text display the angle between two lines, using the specified annotation lines (hFirstLine and hSecondLine).


#include "ltivw.h"

L_LTIVW_API L_INT EXT_FUNCTION L_DispContainerAddCobbAngle(hCellWnd, nSubCellIndex, hFirstLine, hSecondLine)


L_HWND hCellWnd

A handle to the window that represents the cell on which the function's effect will be applied.

L_INT nSubCellIndex

A zero-based index into the image list attached to the cell specified in nCellIndex. This sub-cell contains the image that contains the annotation container. Pass -2 to refer to the selected sub-cell.


Handle of the first annotation line that is used to create the cobb-angle.


Handle to the second annotation line that is used to creat the cobb-angle.


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


To retrieve the cobb angle value, use the function L_DispContainerGetCobbAngleValue.

To delete a cobb angle, use the functionL_DispContainerRemoveCobbAngle.

Required DLLs and Libraries

See Also




This function generate a cobb angle out of the 2 lines drawn in the container.

L_INT nCounter = 0; 
L_INT CALLBACK FindLine(HANNOBJECT hObject, L_VOID * pUserData) 
   pHANNOBJECT hLinesObjects = (pHANNOBJECT)pUserData; 
   L_UINT      uType; 
   L_AnnGetType(hObject, &uType); 
   if (uType == ANNOBJECT_LINE) 
      hLinesObjects[nCounter] = hObject; 
   return SUCCESS; 
L_DOUBLE L_DispContainerAddCobbAngleExample(HWND hCellWnd) 
   L_INT nSubCellIndex; 
   L_DispContainerGetActiveSubCell(hCellWnd, &nSubCellIndex, 0); 
   HANNOBJECT hAnnContainer; 
   L_DispContainerGetAnnotationContainer(hCellWnd, nSubCellIndex, &hAnnContainer, 0); 
   HANNOBJECT hLinesObjects[256]; 
   memset(hLinesObjects, 0, sizeof(HANNOBJECT) * 256); 
   nCounter = 0; 
   L_AnnEnumerate(hAnnContainer, FindLine, hLinesObjects, ANNFLAG_RECURSE, NULL); 
   if (nCounter < 2) 
      MessageBox(hCellWnd, TEXT("You have to have two lines on the cell to create the cobb angle"), TEXT("Error"), MB_OK); 
      return 0.0; 
   L_INT nRet = L_DispContainerAddCobbAngle(hCellWnd, nSubCellIndex, hLinesObjects[nCounter - 1], hLinesObjects[nCounter - 2]); 
   L_DOUBLE dAngle; 
   nRet = L_DispContainerGetCobbAngleValue(hCellWnd, 0, hLinesObjects[nCounter - 1], &dAngle); 
   if (nRet != SUCCESS) 
      MessageBox(hCellWnd, TEXT("The line you sent is not attached to any cobb angle"), TEXT("Error"), MB_OK); 
   return dAngle; 

Help Version 22.0.2022.12.7
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Medical Image Viewer C API Help

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.