#include "ltivw.h"

L_INT pEXT_CALLBACK YourFunction(hCellWnd, nSubCellIndex, nX, nY, pBitmap, szPixelValue, pUserData)

L_HWND hCellWnd;

handle to the cell window

L_INT nSubCellIndex;

index into the image list attached to the cell


X mouse position


Y mouse position


handle to the bitmap

L_TCHAR * szPixelValue;

string containing a probe tool text

L_VOID *pUserData;

pointer to more parameters for the callback

This callback function is called every time the probe tool changes its location, thus updating its text.

Parameter Description
hCellWnd A handle to the window that represents the Medical Viewer Cell.
nSubCellIndex A zero-based index of the sub-cell where the probe tool is displayed.
nX A Value that represents the X position of the cursor.
nY A Value that represents the Y position of the cursor.
pBitmap Pointer to a bitmap handle that is set in the specific sub-cell.
szPixelValue A string that contain probe tool text. the user can update this text to display on the probe tool instead.
pUserData A void pointer that you can use to access a variable or structure containing data that your callback function needs. This gives you a way to receive data indirectly from the function that uses this callback function. (This is the same pointer that you pass in the pUserData parameter of L_DispContainerSetProbeToolUpdatedCallBack.) Keep in mind that this is a void pointer, which must be cast to the appropriate data type within your callback function.


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


To set the current callback use L_DispContainerSetProbeToolUpdatedCallBack. To get the current callback, call L_DispContainerGetProbeToolUpdatedCallBack.

Required DLLs and Libraries

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.
Help Version 19.0.2017.10.27
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LEADTOOLS Medical Image Viewer C API Help