Handles each border found by L_BorderRemoveBitmap.
Windows region representing the border to be removed. It is the programmers responsibility to delete this region (using DeleteObject() when it is no longer needed).
Flag that indicates which border is being processed. Possible values are:
|BORDER_LEFT||The left border is being processed.|
|BORDER_TOP||The top border is being processed.|
|BORDER_RIGHT||The right border is being processed.|
|BORDER_BOTTOM||The bottom border is being processed.|
Pointer to a RECT structure that contains the bounding rectangle of the border being processed.
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_BorderRemoveBitmap.)
Keep in mind that this is a void pointer, which must be cast to the appropriate data type within your callback function.
|SUCCESS_REMOVE||Remove the border.|
|SUCCESS_NOREMOVE||Do not remove the border.|
|Otherwise||An error occurred. Refer to Return Codes.|
The callback is called once for each border found. It is called a maximum of four times for each call to the C API. Return SUCCESS_REMOVE to have the border removed. Return SUCCESS_NOREMOVE to leave the border unchanged. Pass any other value to abort. This value will be the return value of the L_BorderRemoveBitmap(). If flags BORDER_IMAGE_UNCHANGED and BORDER_SINGLE_REGION are being used, then the return value of the callback affects only the internal single region that contains all the changes.
Required DLLs and Libraries
For an example, refer to L_BorderRemoveBitmap.
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