L_DispContainerSetMouseCallBack

#include "l_bitmap.h"

L_LTIVW_API L_INT EXT_FUNCTION L_DispContainerSetMouseCallBack(hCellWnd, pfnCallBack, pUserData)

Sets a callback function that enables the user to handle mouse events.

Parameters

L_HWND hCellWnd

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

DISPCONTAINERMOUSECALLBACK pfnCallBack

Callback function that is called every time the user makes an action with the mouse. The callback function must adhere to the function prototype described in DISPCONTAINERMOUSECALLBACK.

L_VOID * 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

To get the current callback function used to handle mouse events, call L_DispContainerGetMouseCallBack.

The following messages indicate there has been a mouse event:

Required DLLs and Libraries

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