RAKEREMOVECALLBACK (original) (raw)
Summary
Handles each rake found by the L_RakeRemoveBitmap function.
Syntax
#include "l_bitmap.h"
L_INT EXT_CALLBACK YourFunction (hRgn, nLength, pUserData)
Parameters
L_HRGN hRgn
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.
L_INT nLength
Length in pixels of the rake.
L_VOID * pUserData
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.
Returns
| Value | Meaning |
|---|---|
| SUCCESS_REMOVE | Remove the rake. |
| SUCCESS_NOREMOVE | Do not remove the rake. |
| Otherwise | An error occurred. Refer to Return Codes. |
Comments
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.
Required DLLs and Libraries
- LTIMGCOR
- For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.
See Also
Functions
Topics
Example
For an example, refer to L_RakeRemoveBitmap.
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