Handles each rake found by the L_RakeRemoveBitmap function.
#include "l_bitmap.h"
L_INT EXT_CALLBACK YourFunction (hRgn, nLength, pUserData)
Windows region representing a rake to be removed. It is the programmers responsibility to delete this region, using L_FreeBitmapRgn when it is no longer needed.
Length in pixels of the rake.
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_RakeRemoveBitmap) 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_REMOVE | Remove the rake. |
SUCCESS_NOREMOVE | Do not remove the rake. |
Otherwise | An error occurred. Refer to Return Codes. |
The callback is called for each rake found. Return SUCCESS_REMOVE to have the rake removed. Return SUCCESS_NOREMOVE to leave the rake unchanged. Pass any other value to abort. This value will be the return value of the L_RakeRemoveBitmap function.
For an example, refer to L_RakeRemoveBitmap.
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