L_DispContainerGetRegionCallBack

#include "l_bitmap.h"

L_LTIVW_API L_INT EXT_FUNCTION L_DispContainerGetRegionCallBack(hCellWnd, ppfnCallBack, ppUserData)

L_HWND hCellWnd;

handle to the cell window

DISPCONTAINERREGIONCALLBACK * ppfnCallBack;

pointer to the callback function

LPVOID * ppUserData;

pointer to be updated with user data

Gets the current action callback function along with the user data, which were set using L_DispContainerSetRegionCallBack.

Parameter

Description

hCellWnd

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

ppfnCallBack

Pointer to a pointer to a callback function to be updated with the last pre-paint callback function set using L_DispContainerSetPrePaintCallBack.

ppUserData

Void pointer to be updated with the value of user defined data associated with the tag callback. If you are not interested in the user-defined data, pass NULL for this parameter.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

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.

See Also

Functions:

L_DispContainerSetMouseCallBack, L_DispContainerSetActionCallBack, L_DispContainerSetTagCallBack, L_DispContainerGetTagCallBack, L_DispContainerSetAnnotationCallBack, L_DispContainerGetAnnotationCallBack, L_DispContainerGetAnnotationCreatedCallBack, L_DispContainerSetAnnotationCreatedCallBack, L_DispContainerSetPrePaintCallBack, L_DispContainerGetPrePaintCallBack, DISPCONTAINERPREPAINTCALLBACK, L_DispContainerGetPostPaintCallBack, L_DispContainerSetPostPaintCallBack, DISPCONTAINERPOSTPAINTCALLBACK, DISPCONTAINERANNOTATIONCALLBACK, DISPCONTAINERANNOTATIONCREATEDCALLBACK, DISPCONTAINERTAGCALLBACK, DISPCONTAINERACTIONCALLBACK

Topics:

Image Viewer Cells

 

Image Viewer Functions: Image Viewer Cells

Example

This function will make the cell set the region handle for all the frame if the user create or updated a region on one of hte frames.

L_INT EXT_CALLBACK RegionCallBack(HWND hCellWnd, 
HRGN     hRgn, 
L_INT    nCellIndex, 
L_INT    nSubCellIndex, 
L_UINT   uOperation, 
L_VOID * pUserData) 
{ 
   UNREFERENCED_PARAMETER(hRgn); 
   UNREFERENCED_PARAMETER(nCellIndex); 
   UNREFERENCED_PARAMETER(uOperation); 
   UNREFERENCED_PARAMETER(pUserData); 
   L_INT          nCount; 
   HBITMAPLIST    hBitmapList; 
   L_HRGN         hSubCellRgn; 
   L_INT          nI; 
   L_INT nRet = L_DispContainerGetCellBitmapList(hCellWnd, &hBitmapList, 0); 
   if (nRet != SUCCESS) 
      return nRet; 
   L_GetBitmapListCount(hBitmapList, (L_UINT *)&nCount); 
   L_DispContainerGetCellRegionHandle(hCellWnd, nSubCellIndex, &hSubCellRgn, 0); 
   for (nI = 0; nI < nCount; nI++) 
   { 
      if (nSubCellIndex == nI) 
         continue; 
      L_DispContainerSetCellRegionHandle(hCellWnd, nI, hSubCellRgn, L_RGN_SET, 0); 
   } 
   DeleteRgn(hSubCellRgn); 
   return SUCCESS; 
} 
L_INT DispContainerRegionHandleExample(HDISPCONTAINER hCon) 
{ 
   DISPCONTAINERREGIONCALLBACK oldCallBack; 
   if (L_DispContainerGetCellCount(hCon, 0) == 0) 
   { 
      MessageBox(NULL, TEXT("you must at least have one cell added to the viewer"), TEXT("No Cell attached"), MB_OK); 
      return FAILURE; 
   } 
   HWND hCellWnd = L_DispContainerGetCellWindowHandle(hCon, 0, 0); 
   L_DispContainerGetRegionCallBack(hCellWnd, &oldCallBack, NULL); 
   L_DispContainerSetRegionCallBack(hCellWnd, RegionCallBack, hCon); 
   return SUCCESS; 
} 

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