Help Version 19.0.2017.10.27
References ▼
#include "l_bitmap.h"
L_LTIVW_API L_INT EXT_FUNCTION L_DispContainerGetPrePaintCallBack(hCellWnd, ppfnCallBack, ppUserData)
L_HWND hCellWnd; |
handle to the cell window |
DISPCONTAINERPREPAINTCALLBACK * ppfnCallBack; |
pointer to the callback function |
LPVOID * ppUserData; |
pointer to be updated with user data |
Gets the current action callback function along with the user data, which were set using L_DispContainerSetPrePaintCallBack.
Parameter |
Description |
hCellWnd |
A handle to the window that represents the Medical Viewer Cell. |
ppfnCallBack |
Pointer to a pointer to a callback function to be updated with the last pre-paint callback function set using L_DispContainerSetPrePaintCallBack. |
ppUserData |
Void pointer to be updated with the value of user defined data associated with the tag callback. If you are not interested in the user-defined data, pass NULL for this parameter. |
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Required DLLs and Libraries
LTIVW |
This example hides the odd frames
L_INT EXT_CALLBACK PrePaintCallBack(HWND hCellWnd,pDISPCONTAINERCELLINFO pCellInfo,L_VOID * pUserData){UNREFERENCED_PARAMETER(hCellWnd);UNREFERENCED_PARAMETER(pUserData);if ((pCellInfo->nSubCellIndex | 0x1) != pCellInfo->nSubCellIndex){FillRect(pCellInfo->hDC, &pCellInfo->rcRect, GetStockBrush(GRAY_BRUSH));return FAILURE;}return SUCCESS;}L_INT DispContainerPrePaintExample(HDISPCONTAINER hCon){DISPCONTAINERPREPAINTCALLBACK oldCallBack;L_VOID * pOldUserData;if (L_DispContainerGetCellCount(hCon, 0) == 0){MessageBox(NULL, TEXT("you must at least have one cell added to the viewer"), TEXT("No Cell attached"), MB_OK);return FAILURE;}HWND hCellWnd = L_DispContainerGetCellWindowHandle(hCon, 0, 0);L_DispContainerGetPrePaintCallBack(hCellWnd, &oldCallBack, &pOldUserData);L_DispContainerSetPrePaintCallBack(hCellWnd, PrePaintCallBack, hCon);return SUCCESS;}