L_DispContainerGetPaintCallBack
#include "ltivw.h"
L_LTIVW_API L_INT L_DispContainerGetPaintCallBack(hCon, ppfnPaintCallBack, ppUserData)
HDISPCONTAINER hCon; |
/* handle to the container */ |
DISPCONTAINERPAINTCALLBACK * ppfnPaintCallBack; |
/* pointer to paint callback function */ |
LPVOID * ppUserData; |
/* pointer to user data */ |
Gets the current paint callback function along with the user data, which were set using L_DispContainerSetPaintCallBack. This function is available only in the Medical Imaging Suite toolkits.
Parameter |
Description |
hCon |
Handle to the container. |
ppfnPaintCallBack |
Pointer to a pointer to a callback function to be updated with the last paint callback function set using L_DispContainerSetPaintCallBack. |
ppUserData |
Void pointer to be updated with the user defined data associated with the paint callback. If you are not interested in the user-defined data, pass NULL for this parameter. |
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Comments
To set the callback function used to handle painting, call L_DispContainerSetPaintCallBack.
Required DLLs and Libraries
LTIVW 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: |
DISPCONTAINERPAINTCALLBACK, L_DispContainerRepaintCell, L_DispContainerSetPaintCallBack. |
Topics: |
Example
This function set a paint call back that draws an ellipse in the middle of the cell.
L_INT EXT_CALLBACK PaintCallBack(HDC hMemDC, LPRECT lpRect, L_INT, L_INT, L_VOID *) { Ellipse(hMemDC, lpRect->left, lpRect->top, lpRect->right, lpRect->bottom); return SUCCESS; } L_INT DispContainerGetPaintCallBackExample(HDISPCONTAINER hCon) { L_INT nRet; DISPCONTAINERPAINTCALLBACK OldPaintCallBack; nRet = L_DispContainerGetPaintCallBack(hCon, &OldPaintCallBack, NULL); nRet = L_DispContainerSetPaintCallBack(hCon, PaintCallBack, NULL); return SUCCESS; }