Handles each line found by L_LineRemoveBitmap.
Windows region representing a line to be removed. It is the programmers responsibility to delete this region, using DeleteObject() when it is no longer needed.
The starting row of the line. The rows are zero-based.
The starting column of the line. The columns are zero-based.
Length (in pixels) of the line.
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_LineRemoveBitmap)
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 line.|
|SUCCESS_NOREMOVE||Do not remove the line.|
|Otherwise||An error occurred. Refer to Return Codes.|
The callback is called for each line found. Return SUCCESS_REMOVE to have the line removed. Return SUCCESS_NOREMOVE to leave the line unchanged. Pass any other value to abort. This value will be the return value of the L_LineRemoveBitmap(). If flags LINE_IMAGE_UNCHANGED and LINE_SINGLE_REGION are being used, then the return value of the callback affects the internal single region that contains all the changes.
For an example, refer to L_LineRemoveBitmap.
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