L_DispContainerSetPrePaintCallBack

#include "l_bitmap.h"

L_LTIVW_API L_INT EXT_FUNCTION L_DispContainerSetPrePaintCallBack(hCellWnd, pfnCallBack, pUserData)

Sets a callback function that is called before painting the cell or sub-cell.

Parameters

L_HWND hCellWnd

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

DISPCONTAINERPREPAINTCALLBACK pfnCallBack

Callback function that is called before painting the cell.

The callback function must adhere to the function prototype described in DISPCONTAINERPREPAINTCALLBACK.

LPVOID pUserData

Void pointer that you can use to pass one or more additional parameters that the callback function needs.

To use this feature, assign a value to a variable or create a structure that contains as many fields as you need. Then, in this parameter, pass the address of the variable or structure, casting it to L_VOID *. The callback function, which receives the address in its own pUserData parameter, can cast it to a pointer of the appropriate data type to access your variable or structure. If the additional parameters are not needed, you can pass NULL in this parameter.

Returns

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

Comments

This function sets the pre-paint callback. To get the pre-paint callback use L_DispContainerGetPrePaintCallBack

Required DLLs and Libraries

Help Version 21.0.2020.8.21
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