//加載GIF文件
void COutputGIFDlg::OnBrowse()
{
 CFileDialog flDlg(TRUE, "", "", OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
   "GIF|*.gif;||");//定義文件打開對話框
 if (flDlg.DoModal() == IDOK)
 {
 CString szText;
 szText = flDlg.GetPathName();
 m_FileName.SetWindowText(szText);
 m_pBmp = Bitmap::FromFile(szText.AllocSysString()); //加載GIF圖像
 szText.ReleaseBuffer();
 m_nCount = m_pBmp->GetFrameDimensionsCount(); //獲取幀維數(shù)
 GUID *pGuids = new GUID[m_nCount]; //定義一個GUID數(shù)組
 m_pBmp->GetFrameDimensionsList(pGuids,m_nCount); //獲取圖像幀的GUID
 m_FrameCount = m_pBmp->GetFrameCount(pGuids); //獲取GIF幀數(shù)
 UINT nSize; //定義一個整型變量
 m_nCount = 0; //初始化成員變量
 m_pBmp->GetPropertySize(&nSize, &m_nDelay); //獲取屬性大小
 PropertyItem *pItem = NULL; //定義屬性指針
 pItem = (PropertyItem*)malloc(nSize); //為屬性指針分配合適的空間
 m_pBmp->GetAllPropertyItems(nSize, m_nDelay, pItem);//獲取屬性信息
 m_nDelay = ((long*)pItem->value)[0]; //獲取第一幀的延時
 free(pItem); //釋放屬性對象
 delete [] pGuids; //釋放GUID
 m_nIndex = 0; //初始化成員變量
 KillTimer(1);
 SetTimer(1, 300, NULL);
 }
}
void COutputGIFDlg::OnTimer(UINT nIDEvent)
{
 GUID Guid = FrameDimensionTime; //定義一個GUID
 CDC* pDC = GetDC(); //獲取窗口的設備上下文
 //定義一個內(nèi)存畫布
 CMemDC dc(pDC, CRect(20, 50, m_pBmp->GetWidth()+20, m_pBmp->GetHeight()+50));
 Graphics gh(dc.m_hDC); //定義一個圖像對象
 //向設備上下文中繪制圖像
 gh.DrawImage(m_pBmp, 0, 0, m_pBmp->GetWidth(), m_pBmp->GetHeight());
 m_pBmp->SelectActiveFrame(&Guid, m_nIndex++);//設置下一幀
 if(m_nIndex == m_FrameCount) //判斷當前幀是否為尾幀
  m_nIndex = 0; //將當前幀設置為第一幀
 CDialog::OnTimer(nIDEvent);
}
void COutputGIFDlg::OnCancel()
{
 if (m_pBmp != NULL)
 {
 delete m_pBmp;
 m_pBmp = NULL;
 }
 CDialog::OnCancel();
}