#include "l_bitmap.h"

L_INT pEXT_CALLBACK YourFunction (nKey, uHotKeyModifiers, pUserData)

Signals that the user has pressed the capture HotKey.


L_INT nKey

Key code for activation key.

L_UINT uHotKeyModifiers

Modifier keys used with nHotKey. Possible values are listed below and may be combined.

MOD_ALT Alt Key pressed.
MOD_CONTROL Control key pressed.
MOD_SHIFT Shift key pressed.
0 No modifier key was pressed.

L_VOID * pUserData

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 the calling function.)

Keep in mind that this is a void pointer, which must be cast to the appropriate data type within your callback function.


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


Use this callback function to receive notification that the capture HotKey has been pressed by the user. Set this callback using L_CaptureSetKeyPressCallback.

If you do not wish to process the pressed HotKey + Modifiers combination, return ERROR_USER_ABORT.

Required DLLs and Libraries

Help Version 21.0.2021.4.7
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