CAPTUREKEYPRESSCALLBACK Function

#include "l_bitmap.h"

L_INT pEXT_CALLBACK YourFunction (nKey, uHotKeyModifiers, pUserData)

L_INT nKey;	/* code for HotKey that was pressed */
L_UINT uHotKeyModifiers;	/* modifier key */
L_VOID * pUserData;	/* pointer to additional parameters */

Signals that the user has pressed the capture HotKey.

Parameter	Description
nKey	Key code for activation key.
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.
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.

Returns

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

Comments

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

LTSCR

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Functions:	L_CaptureKeyPressCallback
Topics:	Support Functions: Callbacks
	Implementing Screen Capture