L_DispContainerGetPrePaintCallBack (original) (raw)
Summary
Gets the current action callback function along with the user data, which were set using L_DispContainerSetPrePaintCallBack.
Syntax
#include "ltivw.h"
L_LTIVW_API L_INT EXT_FUNCTION L_DispContainerGetPrePaintCallBack(hCellWnd, ppfnCallBack, ppUserData)
Parameters
L_HWND hCellWnd
A handle to the window that represents the Medical Viewer Cell.
DISPCONTAINERPREPAINTCALLBACK * ppfnCallBack
Pointer to a pointer to a callback function to be updated with the last pre-paint callback function set using L_DispContainerSetPrePaintCallBack.
LPVOID * 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.
Returns
| Value | Meaning |
|---|---|
| SUCCESS | The function was successful. |
| < 1 | An error occurred. Refer to Return Codes. |
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
- L_DispContainerSetMouseCallBack
- L_DispContainerSetActionCallBack
- L_DispContainerSetTagCallBack
- L_DispContainerGetTagCallBack
- L_DispContainerSetAnnotationCallBack
- L_DispContainerGetAnnotationCallBack
- L_DispContainerGetAnnotationCreatedCallBack
- L_DispContainerSetAnnotationCreatedCallBack
- L_DispContainerSetPrePaintCallBack
- DISPCONTAINERPREPAINTCALLBACK
- L_DispContainerGetPostPaintCallBack
- L_DispContainerSetPostPaintCallBack
- DISPCONTAINERPOSTPAINTCALLBACK
- DISPCONTAINERANNOTATIONCALLBACK
- DISPCONTAINERANNOTATIONCREATEDCALLBACK
- DISPCONTAINERTAGCALLBACK
- DISPCONTAINERACTIONCALLBACK
Topics
Example
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;
}