L_DispContainerSetAnimationStartedCallBack

#include "l_bitmap.h"

L_LTIVW_API L_INT EXT_FUNCTION L_DispContainerSetAnimationStartedCallBack(hCon, pfnCallBack, pUserData)

HDISPCONTAINER hCon;	/* handle to the container */
DISPCONTAINERANIMATIONSTARTEDCALLBACK pfnCallBack;	/* callback function */
LPVOID pUserData;	/* pointer to more parameters for the callback */

Sets a callback function, which will be fired if the control animation has been started.

Parameter	Description
hCon	Handle to the container.
pfnCallBack	Pointer to a callback function, which will be fired every time the animation, has been started using L_DispContainerStartAnimation. The callback function must adhere to the function prototype described in DISPCONTAINERANIMATIONSTARTEDCALLBACK.
pUserData	Void pointer that you can use to pass one or more additional parameters that the callback function needs.
	To use this feature, assign a value to a variable or create a structure that contains as many fields as you need. Then, in this parameter, pass the address of the variable or structure, casting it to L_VOID . The callback function, which receives the address in its own pUserData* parameter, can cast it to a pointer of the appropriate data type to access your variable or structure.
	If the additional parameters are not needed, you can pass NULL in this parameter.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

This function will set the current animation started callback; to get the current animation started callback call the L_DispContainerGetAnimationStartedCallBack function.

The cell(s) must contain multiple frames.

To start the animation, call the L_DispContainerStartAnimation function.
To stop the animation, call the L_DispContainerStopAnimation function.
To check whether the cell is in an animation phase, call the L_DispContainerIsCellAnimated function.
The user can change or retrieve the animation properties even if the animation has been started.
To retrieve the animation properties of a specific cell, call the L_DispContainerGetAnimationProperties function.
To change the animation properties of a specific cell, call the L_DispContainerSetAnimationProperties function.

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.

Platforms

Windows 2000 /XP/Vista.

See Also

Functions:	L_DispContainerGetAnimationStartedCallBack, L_DispContainerGetAnimationStoppedCallBack, L_DispContainerSetAnimationStoppedCallBack, L_DispContainerSetAnimationProperties, L_DispContainerGetAnimationProperties, L_DispContainerIsCellAnimated, L_DispContainerStopAnimation, L_DispContainerStartAnimation, L_DispContainerCreate, L_DispContainerRemoveCell, L_DispContainerInsertCell, L_DispContainerGetCellCount, L_DispContainerGetCellWindowHandle, L_DispContainerSetCellTag, L_DispContainerSetCellProperties, L_DispContainerGetCellProperties, L_DispContainerRepositionCell, L_DispContainerGetCellPosition, L_DispContainerSetCellBitmapList, L_DispContainerGetCellBitmapList, L_DispContainerGetCellBounds, L_DispContainerSelectCell, L_DispContainerIsCellSelected, L_DispContainerIsCellFrozen
Topics:	Implementing Animation
	Image Viewer Functions: Implementing Animation

Example

This example notifies the user when the animation has started or stopped using the AtartAnimation and StopAnimation procedures.

#if defined (LEADTOOLS_V16_OR_LATER)

L_INT EXT_CALLBACK AnimationStartedCallBack(L_INT    nCellIndex,
                                            L_VOID * pAnimationStartedUserData)
{
   UNREFERENCED_PARAMETER(nCellIndex);
   UNREFERENCED_PARAMETER(pAnimationStartedUserData);

   MessageBox(NULL, TEXT("Animation started"), TEXT("Animation call Backs"), MB_OK);
   return SUCCESS;
}

L_INT EXT_CALLBACK AnimationStoppedCallBack(L_INT    nCellIndex, 
                                            L_VOID * pAnimationStoppedUserData)
{
   UNREFERENCED_PARAMETER(nCellIndex);
   UNREFERENCED_PARAMETER(pAnimationStoppedUserData);

   MessageBox(NULL, TEXT("Animation stopped"), TEXT("Animation call Backs"), MB_OK);
   return SUCCESS;
}

L_INT DispContainerAnimationCallbacksExample(HDISPCONTAINER hCon)
{
   DISPCONTAINERANIMATIONSTOPPEDCALLBACK oldAnimationStoppedCallback;
   DISPCONTAINERANIMATIONSTARTEDCALLBACK oldAnimationStartedCallback;
   L_VOID * oldAnimationStoppedUserData;
   L_VOID * oldAnimationStartedUserData;

   L_DispContainerGetAnimationStoppedCallBack(hCon, &oldAnimationStoppedCallback, &oldAnimationStoppedUserData);

   L_DispContainerSetAnimationStoppedCallBack(hCon, AnimationStoppedCallBack, NULL);

   L_DispContainerGetAnimationStartedCallBack(hCon, &oldAnimationStartedCallback, &oldAnimationStartedUserData);

   L_DispContainerSetAnimationStartedCallBack(hCon, AnimationStartedCallBack, NULL);

   return SUCCESS;
}

L_VOID StartAnimation(HDISPCONTAINER hCon)
{
   L_DispContainerStartAnimation(hCon, 0, 0, -1, FALSE, 0);
}

L_VOID StopAnimation(HDISPCONTAINER hCon)
{
   L_DispContainerStopAnimation(hCon, 0, 0);
}
#endif