#include "l_bitmap.h"
L_INT pEXT_CALLBACK YourFunction(pDisplay, pBitmap, pUserData)
L_VOID *pDisplay; |
/* device context handle */ |
pBITMAPHANDLE pBitmap; |
/* pointer to the bitmap handle */ |
L_VOID *pUserData; |
/* pointer to additional data */ |
This callback can be used to free any memory allocated in PAINTCALLBACK_PREPAINT.
Parameter |
Description |
pDisplay |
Handle of the device context passed to the paint function. |
pBitmap |
Pointer to the bitmap handle structure holding the input data. |
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 PAINTCALLBACKDATA structure.) |
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Comments
pDisplay is the pDisplay member from the PAINTCALLBACKDATA structure that you passed to the paint function. The default callbacks expect it to be a HDC handle. But, if you override all the paint callbacks, it can be a pointer of any type you want.
This callback is called after all other paint callbacks. This callback will be called exactly once for a paint operation.
You can use this callback to perform any device un-initialization or free any memory allocated in the PAINTCALLBACK_PREPAINT callback.
Required DLLs and Libraries
LTDIS For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application |
Example
For an example, refer to L_PaintDCCallback.