strcat(szFilter, Filter);

strcpy(Filter,FreeImage_GetFIFExtensionList((FREE_IMAGE_FORMAT)i));

token = strtok(Filter, ",");

while(token != NULL) {

strcat(szFilter, "*.");strcat(szFilter, token);

strcat(szFilter, ";");token=strtok(NULL, ",");

}

szFilter[strlen(szFilter)-1] = '|';  iCount++;

}

strcat(szFilter, "All Files (*.*)|*.*|");

strcat(szFilter, "|");

return iCount;

}

    在文档类中重载OnFileOpen，调用GetFilterString创建文件类型过滤字符串，调用LoadDIB加载位图。

void CDIPDoc::OnFileOpen()

{

FIBITMAP* pFI = NULL;

char szFilter[2048];

GetFilterString(szFilter);

CFileDialog dlg(TRUE,NULL,NULL,

OFN_HIDEREADONLY, szFilter);

if(dlg.DoModal() == IDOK){

CString strPath = dlg.GetPathName();

pFI = LoadDIB(strPath, 0);

if(pFI){

    FreeDIB();//释放以前的位图

    m_pFI = pFI;//指向新位图

UpdateAllViews (NULL);

}

}

}