LAnimationWindow::IsValidAnimation

#include "ltwrappr.h"

L_BOOL LAnimationWindow::IsValidAnimation() const

Determines whether the LAnimationWindow object is valid.

Returns

Comments

Before you can use any of the animation playback functions, a valid LBitmapList object must be associated with the class object. Until you have associated a bitmap list with the LAnimationWindow object, the object is considered invalid.

You can associate a bitmap list with the LAnimationWindow object using the constructor(LAnimationWindow::LAnimationWindow), LAnimationWindow::SetBitmapList, or LAnimationWindow::Load.

Note: This function also determines whether the current file is an animated GIF or AVI file. If the file contains more than one page, the function will return TRUE.

Required DLLs and Libraries

See Also

Example

L_INT LAnimationWindow_IsValidAnimationExample(HWND hWndParent)
{
   L_INT nRet;
   LBase::LoadLibraries(LT_ALL_LEADLIB); 
 //make sure all libraries are loaded
   WRPUNLOCKSUPPORT(); //unlock GIF support
   LBitmap Bitmap;
   LBitmapList MyBitmapList;
   LAnimationWindow MyAnimation;
   L_TCHAR  * pszFiles[] = {TEXT("C:\\Program Files\\LEAD Technologies, Inc\\LEADTOOLS 15.0\\Images\\image1.cmp"),
                            TEXT("C:\\Program Files\\LEAD Technologies, Inc\\LEADTOOLS 15.0\\Images\\image2.cmp"),
                            TEXT("C:\\Program Files\\LEAD Technologies, Inc\\LEADTOOLS 15.0\\Images\\image3.cmp") };
   MyBitmapList.Create();
   for (int i = 0 ; i<3; i++)
   {
      nRet = Bitmap.Load(pszFiles[i]);
      if (nRet !=SUCCESS)
      {
         MessageBox(hWndParent, TEXT("Failed to load file"),TEXT("Error!"),MB_OK | MB_ICONSTOP);
         return nRet;
      }
      nRet = MyBitmapList.InsertItem(&Bitmap);
      if(nRet != SUCCESS)
         return nRet;
   }
   MyAnimation.SetBitmapList(&MyBitmapList);
  
   if (MyAnimation.IsValidAnimation())
   {
      MyAnimation.CreateWnd(hWndParent,0, WS_VISIBLE|WS_CHILD|WS_BORDER,0,0,800,600);
      MyAnimation.SetDelay(1000);
      MyAnimation.SetBackgroundColor(RGB(255,255,255));
      
      nRet = MyAnimation.PlayAnimation();
      if(nRet != SUCCESS)
         return nRet;
      while (MyAnimation.IsPlaying())
      {
         if (MyAnimation.DoEvents())
            break; 
 
      }
      MessageBox(hWndParent, TEXT("Press Ok to terminate"),TEXT("Error!"),MB_OK | MB_ICONSTOP);
   }
   return SUCCESS;
}