LAnimationWindow::AnimateEvent

#include "ltwrappr.h"

virtual L_VOID LAnimationWindow::AnimateEvent(nEvent, nFrameNumber)

L_INT nEvent;	the animation event
L_INT nFrameNumber;	the current frame number

Informs you of Animation events.

Parameter	Description
nEvent	The animation event. Possible values are:

	Value	Meaning
	EVENT_MOVE_FIRST	LAnimationWindow::MoveFirstFrame was called.
	EVENT_MOVE_LAST	LAnimationWindow::MoveLastFrame was called.
	EVENT_MOVE_NEXT	LAnimationWindow::MoveNextFrame was called.
	EVENT_MOVE_PREV	LAnimationWindow::MovePreviousFrame was called.
	EVENT_MOVE_TO	LAnimationWindow::MoveToFrame was called.
	EVENT_PLAYSTATE_START	LAnimationWindow::PlayAnimation was called and the playback was started.
	EVENT_PLAYSTATE_STOP	LAnimationWindow::StopAnimation was called or the playback reached the end.
	EVENT_PLAYSTATE_PRECLEAR	The initial state of the playback (index = -1). The target bitmap will be cleared to the Bitmap background color on the next call.
	EVENT_PLAYSTATE_POSTCLEAR	The target bitmap has been cleared.
	EVENT_PLAYSTATE_PRERENDER	The current image will be rendered to the target bitmap.
	EVENT_PLAYSTATE_RENDER	An image has been rendered to the target bitmap.
	EVENT_PLAYSTATE_POSTRENDER	An image is in the midst of being rendered to the target bitmap.
	EVENT_PLAYSTATE_WAITINPUT	The playback engine is waiting for user input before moving on to PLAYSTATE_PREDISPOSE.
	EVENT_PLAYSTATE_WAITDELAY	The playback engine is waiting for a delayed time before moving on to PLAYSTATE_PREDISPOSE.
	EVENT_PLAYSTATE_WAITINPUTDELAY	The playback engine is waiting for user input and a delayed time before moving on to PLAYSTATE_PREDISPOSE.
	EVENT_PLAYSTATE_PREDISPOSE	The current image will be disposed of.
	EVENT_PLAYSTATE_POSTDISPOSE	The current image has been disposed of. The index is incremented after processing this state.
	EVENT_PLAYSTATE_LOOP	Animation playback has looped back to the first frame.

nFrameNumber

The current frame number being displayed.

Returns

None

Comments

This function is called to indicate that an animation event has occurred, or that one of the LAnimationWindow::MoveXXX functions has been called.

You must enable the animation events using LAnimationWindow::EnableAnimateEvent before this function will be called.

Override this function in order to be notified of the events.

The events from EVENT_PLAYSTATE_START to EVENT_POSTDISPOSE are generated by LAnimationWindow::PlayAnimation.

Required DLLs and Libraries

LTDIS
LTDLG
LTEFX
LTFIL
LTIMG
LTSCR
LTTWN

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

Win32, x64.

Example

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName 
class MyClass : public LAnimationWindow 
{ 
public : 
   virtual L_VOID AnimateEvent(L_INT nEvent,L_INT nFrameNumber) 
   { 
      L_TCHAR szStr[255]; 
      wsprintf(szStr,TEXT("Event number : %d\nFrameNumber : %d"),nEvent, nFrameNumber); 
      MessageBox(m_hWnd, szStr, TEXT("Example"), MB_OK|MB_ICONINFORMATION); 
      //call base class 
      LAnimationWindow::AnimateEvent(nEvent, nFrameNumber); 
   } 
}; 
L_INT LAnnAutomation_LAnimationWindow_AnimateEventExample(HWND hWndParent) 
{ 
   L_INT nRet; 
   LBase::LoadLibraries(LT_ALL_LEADLIB); 
   //make sure all libraries are loaded 
   MyClass MyAnimation; 
   MyAnimation.SetFileName(MAKE_IMAGE_PATH(TEXT("eye.gif"))); 
   nRet = MyAnimation.Load(); 
   if ( nRet==SUCCESS) 
   { 
      MyAnimation.CreateWnd(hWndParent,0, WS_VISIBLE|WS_CHILD|WS_BORDER,0,0,300,300); 
      MyAnimation.EnableAnimateEvent(); 
      nRet = MyAnimation.PlayAnimation(); 
      if(nRet != SUCCESS) 
         return nRet; 
      while (MyAnimation.IsPlaying()) 
      { 
         if (MyAnimation.DoEvents()) 
            break; 
      } 
   } 
   else 
      return nRet; 
   return SUCCESS; 
}

Help Version 19.0.2017.10.27

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LEADTOOLS Raster Imaging C++ Class Library Help

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Summary of Features

Functions:	LAnimationWindow::LAnimationWindow, LAnimationWindow::IsPlaying, , LAnimationWindow::EnableAnimateEvent, Class Members
Topics:	Implementing Animation